Rename folder structure from OpenPGP Keychain to OpenKeychain

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CertifyKeyActivity.java

@@ -0,0 +1,388 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ * Copyright (C) 2011 Senecaso
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.ProgressDialog;
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.os.Messenger;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.content.CursorLoader;
+import android.support.v4.content.Loader;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.ActionBarActivity;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.ArrayAdapter;
+import android.widget.CheckBox;
+import android.widget.CompoundButton;
+import android.widget.CompoundButton.OnCheckedChangeListener;
+import android.widget.ListView;
+import android.widget.Spinner;
+import android.widget.TextView;
+import android.widget.Toast;
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import org.spongycastle.openpgp.PGPPublicKeyRing;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.Preferences;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
+import org.sufficientlysecure.keychain.provider.KeychainContract.UserIds;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.PassphraseCacheService;
+import org.sufficientlysecure.keychain.ui.adapter.ViewKeyUserIdsAdapter;
+import org.sufficientlysecure.keychain.ui.dialog.PassphraseDialogFragment;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.util.ArrayList;
+
+/**
+ * Signs the specified public key with the specified secret master key
+ */
+public class CertifyKeyActivity extends ActionBarActivity implements
+        SelectSecretKeyLayoutFragment.SelectSecretKeyCallback, LoaderManager.LoaderCallbacks<Cursor> {
+    private BootstrapButton mSignButton;
+    private CheckBox mUploadKeyCheckbox;
+    private Spinner mSelectKeyserverSpinner;
+
+    private SelectSecretKeyLayoutFragment mSelectKeyFragment;
+
+    private Uri mDataUri;
+    private long mPubKeyId = 0;
+    private long mMasterKeyId = 0;
+
+    private ListView mUserIds;
+    private ViewKeyUserIdsAdapter mUserIdsAdapter;
+
+    private static final int LOADER_ID_KEYRING = 0;
+    private static final int LOADER_ID_USER_IDS = 1;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.certify_key_activity);
+
+        final ActionBar actionBar = getSupportActionBar();
+        actionBar.setDisplayShowTitleEnabled(true);
+        actionBar.setDisplayHomeAsUpEnabled(false);
+        actionBar.setHomeButtonEnabled(false);
+
+        mSelectKeyFragment = (SelectSecretKeyLayoutFragment) getSupportFragmentManager()
+                .findFragmentById(R.id.sign_key_select_key_fragment);
+        mSelectKeyFragment.setCallback(this);
+        mSelectKeyFragment.setFilterCertify(true);
+
+        mSelectKeyserverSpinner = (Spinner) findViewById(R.id.sign_key_keyserver);
+        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
+                android.R.layout.simple_spinner_item, Preferences.getPreferences(this)
+                .getKeyServers());
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        mSelectKeyserverSpinner.setAdapter(adapter);
+
+        mUploadKeyCheckbox = (CheckBox) findViewById(R.id.sign_key_upload_checkbox);
+        if (!mUploadKeyCheckbox.isChecked()) {
+            mSelectKeyserverSpinner.setEnabled(false);
+        } else {
+            mSelectKeyserverSpinner.setEnabled(true);
+        }
+
+        mUploadKeyCheckbox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
+
+            @Override
+            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+                if (!isChecked) {
+                    mSelectKeyserverSpinner.setEnabled(false);
+                } else {
+                    mSelectKeyserverSpinner.setEnabled(true);
+                }
+            }
+        });
+
+        mSignButton = (BootstrapButton) findViewById(R.id.sign_key_sign_button);
+        mSignButton.setOnClickListener(new OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                if (mPubKeyId != 0) {
+                    if (mMasterKeyId == 0) {
+                        mSelectKeyFragment.setError(getString(R.string.select_key_to_sign));
+                    } else {
+                        initiateSigning();
+                    }
+                }
+            }
+        });
+
+        mDataUri = getIntent().getData();
+        if (mDataUri == null) {
+            Log.e(Constants.TAG, "Intent data missing. Should be Uri of key!");
+            finish();
+            return;
+        }
+        Log.e(Constants.TAG, "uri: " + mDataUri);
+
+        mUserIds = (ListView) findViewById(R.id.user_ids);
+
+        mUserIdsAdapter = new ViewKeyUserIdsAdapter(this, null, 0, true);
+        mUserIds.setAdapter(mUserIdsAdapter);
+        mUserIds.setOnItemClickListener(mUserIdsAdapter);
+
+        getSupportLoaderManager().initLoader(LOADER_ID_KEYRING, null, this);
+        getSupportLoaderManager().initLoader(LOADER_ID_USER_IDS, null, this);
+
+    }
+
+    static final String USER_IDS_SELECTION = UserIds.IS_REVOKED + " = 0";
+
+    static final String[] KEYRING_PROJECTION =
+            new String[] {
+                    KeyRings._ID,
+                    KeyRings.MASTER_KEY_ID,
+                    KeyRings.FINGERPRINT,
+                    KeyRings.USER_ID,
+            };
+    static final int INDEX_MASTER_KEY_ID = 1;
+    static final int INDEX_FINGERPRINT = 2;
+    static final int INDEX_USER_ID = 3;
+
+    @Override
+    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        switch(id) {
+            case LOADER_ID_KEYRING: {
+                Uri uri = KeyRings.buildUnifiedKeyRingUri(mDataUri);
+                return new CursorLoader(this, uri, KEYRING_PROJECTION, null, null, null);
+            }
+            case LOADER_ID_USER_IDS: {
+                Uri uri = UserIds.buildUserIdsUri(mDataUri);
+                return new CursorLoader(this, uri,
+                        ViewKeyUserIdsAdapter.USER_IDS_PROJECTION, USER_IDS_SELECTION, null, null);
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
+        switch(loader.getId()) {
+            case LOADER_ID_KEYRING:
+                // the first key here is our master key
+                if (data.moveToFirst()) {
+                    // TODO: put findViewById in onCreate!
+                    mPubKeyId = data.getLong(INDEX_MASTER_KEY_ID);
+                    String keyIdStr = PgpKeyHelper.convertKeyIdToHexShort(mPubKeyId);
+                    ((TextView) findViewById(R.id.key_id)).setText(keyIdStr);
+
+                    String mainUserId = data.getString(INDEX_USER_ID);
+                    ((TextView) findViewById(R.id.main_user_id)).setText(mainUserId);
+
+                    byte[] fingerprintBlob = data.getBlob(INDEX_FINGERPRINT);
+                    String fingerprint = PgpKeyHelper.convertFingerprintToHex(fingerprintBlob);
+                    ((TextView) findViewById(R.id.fingerprint))
+                        .setText(PgpKeyHelper.colorizeFingerprint(fingerprint));
+                }
+                break;
+            case LOADER_ID_USER_IDS:
+                mUserIdsAdapter.swapCursor(data);
+                break;
+        }
+    }
+
+    @Override
+    public void onLoaderReset(Loader<Cursor> loader) {
+        switch(loader.getId()) {
+            case LOADER_ID_USER_IDS:
+                mUserIdsAdapter.swapCursor(null);
+                break;
+        }
+    }
+
+    /**
+     * handles the UI bits of the signing process on the UI thread
+     */
+    private void initiateSigning() {
+        PGPPublicKeyRing pubring = ProviderHelper.getPGPPublicKeyRing(this, mPubKeyId);
+        if (pubring != null) {
+            // if we have already signed this key, dont bother doing it again
+            boolean alreadySigned = false;
+
+            /* todo: reconsider this at a later point when certs are in the db
+            @SuppressWarnings("unchecked")
+            Iterator<PGPSignature> itr = pubring.getPublicKey(mPubKeyId).getSignatures();
+            while (itr.hasNext()) {
+                PGPSignature sig = itr.next();
+                if (sig.getKeyID() == mMasterKeyId) {
+                    alreadySigned = true;
+                    break;
+                }
+            }
+            */
+
+            if (!alreadySigned) {
+                /*
+                 * get the user's passphrase for this key (if required)
+                 */
+                String passphrase = PassphraseCacheService.getCachedPassphrase(this, mMasterKeyId);
+                if (passphrase == null) {
+                    PassphraseDialogFragment.show(this, mMasterKeyId,
+                        new Handler() {
+                            @Override
+                            public void handleMessage(Message message) {
+                                if (message.what == PassphraseDialogFragment.MESSAGE_OKAY) {
+                                    startSigning();
+                                }
+                            }
+                        });
+                    // bail out; need to wait until the user has entered the passphrase before trying again
+                    return;
+                } else {
+                    startSigning();
+                }
+            } else {
+                Toast.makeText(this, R.string.key_has_already_been_signed, Toast.LENGTH_SHORT)
+                        .show();
+
+                setResult(RESULT_CANCELED);
+                finish();
+            }
+        }
+    }
+
+    /**
+     * kicks off the actual signing process on a background thread
+     */
+    private void startSigning() {
+
+        // Bail out if there is not at least one user id selected
+        ArrayList<String> userIds = mUserIdsAdapter.getSelectedUserIds();
+        if (userIds.isEmpty()) {
+            Toast.makeText(CertifyKeyActivity.this, "No User IDs to sign selected!",
+                    Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        // Send all information needed to service to sign key in other thread
+        Intent intent = new Intent(this, KeychainIntentService.class);
+
+        intent.setAction(KeychainIntentService.ACTION_CERTIFY_KEYRING);
+
+        // fill values for this action
+        Bundle data = new Bundle();
+
+        data.putLong(KeychainIntentService.CERTIFY_KEY_MASTER_KEY_ID, mMasterKeyId);
+        data.putLong(KeychainIntentService.CERTIFY_KEY_PUB_KEY_ID, mPubKeyId);
+        data.putStringArrayList(KeychainIntentService.CERTIFY_KEY_UIDS, userIds);
+
+        intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+        // Message is received after signing is done in KeychainIntentService
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(this,
+                getString(R.string.progress_signing), ProgressDialog.STYLE_SPINNER) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+
+                    Toast.makeText(CertifyKeyActivity.this, R.string.key_sign_success,
+                            Toast.LENGTH_SHORT).show();
+
+                    // check if we need to send the key to the server or not
+                    if (mUploadKeyCheckbox.isChecked()) {
+                        // upload the newly signed key to the keyserver
+                        uploadKey();
+                    } else {
+                        setResult(RESULT_OK);
+                        finish();
+                    }
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(saveHandler);
+        intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+        // show progress dialog
+        saveHandler.showProgressDialog(this);
+
+        // start service with intent
+        startService(intent);
+    }
+
+    private void uploadKey() {
+        // Send all information needed to service to upload key in other thread
+        Intent intent = new Intent(this, KeychainIntentService.class);
+
+        intent.setAction(KeychainIntentService.ACTION_UPLOAD_KEYRING);
+
+        // set data uri as path to keyring
+        intent.setData(mDataUri);
+
+        // fill values for this action
+        Bundle data = new Bundle();
+
+        Spinner keyServer = (Spinner) findViewById(R.id.sign_key_keyserver);
+        String server = (String) keyServer.getSelectedItem();
+        data.putString(KeychainIntentService.UPLOAD_KEY_SERVER, server);
+
+        intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+        // Message is received after uploading is done in KeychainIntentService
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(this,
+                getString(R.string.progress_exporting), ProgressDialog.STYLE_HORIZONTAL) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+                    Toast.makeText(CertifyKeyActivity.this, R.string.key_send_success,
+                            Toast.LENGTH_SHORT).show();
+
+                    setResult(RESULT_OK);
+                    finish();
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(saveHandler);
+        intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+        // show progress dialog
+        saveHandler.showProgressDialog(this);
+
+        // start service with intent
+        startService(intent);
+    }
+
+    /**
+     * callback from select key fragment
+     */
+    @Override
+    public void onKeySelected(long secretKeyId) {
+        mMasterKeyId = secretKeyId;
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptActivity.java

@@ -0,0 +1,182 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.view.PagerTabStrip;
+import android.support.v4.view.ViewPager;
+import android.widget.Toast;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.ActionBarHelper;
+import org.sufficientlysecure.keychain.helper.FileHelper;
+import org.sufficientlysecure.keychain.pgp.PgpHelper;
+import org.sufficientlysecure.keychain.ui.adapter.PagerTabStripAdapter;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.util.regex.Matcher;
+
+public class DecryptActivity extends DrawerActivity {
+
+    /* Intents */
+    public static final String ACTION_DECRYPT = Constants.INTENT_PREFIX + "DECRYPT";
+
+    /* EXTRA keys for input */
+    public static final String EXTRA_TEXT = "text";
+
+    ViewPager mViewPager;
+    PagerTabStrip mPagerTabStrip;
+    PagerTabStripAdapter mTabsAdapter;
+
+    Bundle mMessageFragmentBundle = new Bundle();
+    Bundle mFileFragmentBundle = new Bundle();
+    int mSwitchToTab = PAGER_TAB_MESSAGE;
+
+    private static final int PAGER_TAB_MESSAGE = 0;
+    private static final int PAGER_TAB_FILE = 1;
+
+    private void initView() {
+        mViewPager = (ViewPager) findViewById(R.id.decrypt_pager);
+        mPagerTabStrip = (PagerTabStrip) findViewById(R.id.decrypt_pager_tab_strip);
+
+        mTabsAdapter = new PagerTabStripAdapter(this);
+        mViewPager.setAdapter(mTabsAdapter);
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.decrypt_activity);
+
+        // set actionbar without home button if called from another app
+        ActionBarHelper.setBackButton(this);
+
+        initView();
+
+        setupDrawerNavigation(savedInstanceState);
+
+        // Handle intent actions, maybe changes the bundles
+        handleActions(getIntent());
+
+        mTabsAdapter.addTab(DecryptMessageFragment.class,
+            mMessageFragmentBundle, getString(R.string.label_message));
+        mTabsAdapter.addTab(DecryptFileFragment.class,
+            mFileFragmentBundle, getString(R.string.label_file));
+        mViewPager.setCurrentItem(mSwitchToTab);
+    }
+
+
+    /**
+     * Handles all actions with this intent
+     *
+     * @param intent
+     */
+    private void handleActions(Intent intent) {
+        String action = intent.getAction();
+        Bundle extras = intent.getExtras();
+        String type = intent.getType();
+        Uri uri = intent.getData();
+
+        if (extras == null) {
+            extras = new Bundle();
+        }
+
+        /*
+         * Android's Action
+         */
+        if (Intent.ACTION_SEND.equals(action) && type != null) {
+            // When sending to Keychain Decrypt via share menu
+            if ("text/plain".equals(type)) {
+                // Plain text
+                String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
+                if (sharedText != null) {
+                    // handle like normal text decryption, override action and extras to later
+                    // executeServiceMethod ACTION_DECRYPT in main actions
+                    extras.putString(EXTRA_TEXT, sharedText);
+                    action = ACTION_DECRYPT;
+                }
+            } else {
+                // Binary via content provider (could also be files)
+                // override uri to get stream from send
+                uri = (Uri) intent.getParcelableExtra(Intent.EXTRA_STREAM);
+                action = ACTION_DECRYPT;
+            }
+        } else if (Intent.ACTION_VIEW.equals(action)) {
+            // Android's Action when opening file associated to Keychain (see AndroidManifest.xml)
+
+            // override action
+            action = ACTION_DECRYPT;
+        }
+
+        String textData = extras.getString(EXTRA_TEXT);
+
+        /**
+         * Main Actions
+         */
+        if (ACTION_DECRYPT.equals(action) && textData != null) {
+            Log.d(Constants.TAG, "textData not null, matching text ...");
+            Matcher matcher = PgpHelper.PGP_MESSAGE.matcher(textData);
+            if (matcher.matches()) {
+                Log.d(Constants.TAG, "PGP_MESSAGE matched");
+                textData = matcher.group(1);
+                // replace non breakable spaces
+                textData = textData.replaceAll("\\xa0", " ");
+
+                mMessageFragmentBundle.putString(DecryptMessageFragment.ARG_CIPHERTEXT, textData);
+                mSwitchToTab = PAGER_TAB_MESSAGE;
+            } else {
+                matcher = PgpHelper.PGP_CLEARTEXT_SIGNATURE.matcher(textData);
+                if (matcher.matches()) {
+                    Log.d(Constants.TAG, "PGP_CLEARTEXT_SIGNATURE matched");
+                    textData = matcher.group(1);
+                    // replace non breakable spaces
+                    textData = textData.replaceAll("\\xa0", " ");
+
+                    mMessageFragmentBundle.putString(DecryptMessageFragment.ARG_CIPHERTEXT, textData);
+                    mSwitchToTab = PAGER_TAB_MESSAGE;
+                } else {
+                    Log.d(Constants.TAG, "Nothing matched!");
+                }
+            }
+        } else if (ACTION_DECRYPT.equals(action) && uri != null) {
+            // get file path from uri
+            String path = FileHelper.getPath(this, uri);
+
+            if (path != null) {
+                mFileFragmentBundle.putString(DecryptFileFragment.ARG_FILENAME, path);
+                mSwitchToTab = PAGER_TAB_FILE;
+            } else {
+                Log.e(Constants.TAG,
+                        "Direct binary data without actual file in filesystem is not supported. " +
+                        "Please use the Remote Service API!");
+                Toast.makeText(this, R.string.error_only_files_are_supported, Toast.LENGTH_LONG)
+                        .show();
+                // end activity
+                finish();
+            }
+        } else {
+            Log.e(Constants.TAG,
+                    "Include the extra 'text' or an Uri with setData() in your Intent!");
+        }
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFileFragment.java

@@ -0,0 +1,261 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.Activity;
+import android.app.ProgressDialog;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.os.Messenger;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.CheckBox;
+import android.widget.EditText;
+
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import com.devspark.appmsg.AppMsg;
+
+import org.openintents.openpgp.OpenPgpSignatureResult;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.FileHelper;
+import org.sufficientlysecure.keychain.pgp.PgpDecryptVerifyResult;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.ui.dialog.DeleteFileDialogFragment;
+import org.sufficientlysecure.keychain.ui.dialog.FileDialogFragment;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.io.File;
+
+public class DecryptFileFragment extends DecryptFragment {
+    public static final String ARG_FILENAME = "filename";
+
+    private static final int RESULT_CODE_FILE = 0x00007003;
+
+    // view
+    private EditText mFilename;
+    private CheckBox mDeleteAfter;
+    private BootstrapButton mBrowse;
+    private BootstrapButton mDecryptButton;
+
+    private String mInputFilename = null;
+    private String mOutputFilename = null;
+
+    private FileDialogFragment mFileDialog;
+
+    /**
+     * Inflate the layout for this fragment
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.decrypt_file_fragment, container, false);
+
+        mFilename = (EditText) view.findViewById(R.id.decrypt_file_filename);
+        mBrowse = (BootstrapButton) view.findViewById(R.id.decrypt_file_browse);
+        mDeleteAfter = (CheckBox) view.findViewById(R.id.decrypt_file_delete_after_decryption);
+        mDecryptButton = (BootstrapButton) view.findViewById(R.id.decrypt_file_action_decrypt);
+        mBrowse.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                FileHelper.openFile(DecryptFileFragment.this, mFilename.getText().toString(), "*/*",
+                        RESULT_CODE_FILE);
+            }
+        });
+        mDecryptButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                decryptAction();
+            }
+        });
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        String filename = getArguments().getString(ARG_FILENAME);
+        if (filename != null) {
+            mFilename.setText(filename);
+        }
+    }
+
+    private void guessOutputFilename() {
+        mInputFilename = mFilename.getText().toString();
+        File file = new File(mInputFilename);
+        String filename = file.getName();
+        if (filename.endsWith(".asc") || filename.endsWith(".gpg") || filename.endsWith(".pgp")) {
+            filename = filename.substring(0, filename.length() - 4);
+        }
+        mOutputFilename = Constants.Path.APP_DIR + "/" + filename;
+    }
+
+    private void decryptAction() {
+        String currentFilename = mFilename.getText().toString();
+        if (mInputFilename == null || !mInputFilename.equals(currentFilename)) {
+            guessOutputFilename();
+        }
+
+        if (mInputFilename.equals("")) {
+            AppMsg.makeText(getActivity(), R.string.no_file_selected, AppMsg.STYLE_ALERT).show();
+            return;
+        }
+
+        if (mInputFilename.startsWith("file")) {
+            File file = new File(mInputFilename);
+            if (!file.exists() || !file.isFile()) {
+                AppMsg.makeText(
+                        getActivity(),
+                        getString(R.string.error_message,
+                                getString(R.string.error_file_not_found)), AppMsg.STYLE_ALERT)
+                        .show();
+                return;
+            }
+        }
+
+        askForOutputFilename();
+    }
+
+    private void askForOutputFilename() {
+        // Message is received after passphrase is cached
+        Handler returnHandler = new Handler() {
+            @Override
+            public void handleMessage(Message message) {
+                if (message.what == FileDialogFragment.MESSAGE_OKAY) {
+                    Bundle data = message.getData();
+                    mOutputFilename = data.getString(FileDialogFragment.MESSAGE_DATA_FILENAME);
+                    decryptStart(null);
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(returnHandler);
+
+        mFileDialog = FileDialogFragment.newInstance(messenger,
+                getString(R.string.title_decrypt_to_file),
+                getString(R.string.specify_file_to_decrypt_to), mOutputFilename, null);
+
+        mFileDialog.show(getActivity().getSupportFragmentManager(), "fileDialog");
+    }
+
+    @Override
+    protected void decryptStart(String passphrase) {
+        Log.d(Constants.TAG, "decryptStart");
+
+        // Send all information needed to service to decrypt in other thread
+        Intent intent = new Intent(getActivity(), KeychainIntentService.class);
+
+        // fill values for this action
+        Bundle data = new Bundle();
+
+        intent.setAction(KeychainIntentService.ACTION_DECRYPT_VERIFY);
+
+        // data
+        data.putInt(KeychainIntentService.TARGET, KeychainIntentService.TARGET_URI);
+
+        Log.d(Constants.TAG, "mInputFilename=" + mInputFilename + ", mOutputFilename="
+                + mOutputFilename);
+
+        data.putString(KeychainIntentService.ENCRYPT_INPUT_FILE, mInputFilename);
+        data.putString(KeychainIntentService.ENCRYPT_OUTPUT_FILE, mOutputFilename);
+
+        data.putString(KeychainIntentService.DECRYPT_PASSPHRASE, passphrase);
+
+        intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+        // Message is received after encrypting is done in KeychainIntentService
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity(),
+                getString(R.string.progress_decrypting), ProgressDialog.STYLE_HORIZONTAL) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+                    // get returned data bundle
+                    Bundle returnData = message.getData();
+
+                    PgpDecryptVerifyResult decryptVerifyResult =
+                            returnData.getParcelable(KeychainIntentService.RESULT_DECRYPT_VERIFY_RESULT);
+
+                    if (PgpDecryptVerifyResult.KEY_PASSHRASE_NEEDED == decryptVerifyResult.getStatus()) {
+                        showPassphraseDialog(decryptVerifyResult.getKeyIdPassphraseNeeded());
+                    } else if (PgpDecryptVerifyResult.SYMMETRIC_PASSHRASE_NEEDED ==
+                                    decryptVerifyResult.getStatus()) {
+                        showPassphraseDialog(Id.key.symmetric);
+                    } else {
+                        AppMsg.makeText(getActivity(), R.string.decryption_successful,
+                                AppMsg.STYLE_INFO).show();
+
+                        if (mDeleteAfter.isChecked()) {
+                            // Create and show dialog to delete original file
+                            DeleteFileDialogFragment deleteFileDialog = DeleteFileDialogFragment
+                                    .newInstance(mInputFilename);
+                            deleteFileDialog.show(getActivity().getSupportFragmentManager(), "deleteDialog");
+                        }
+
+                        OpenPgpSignatureResult signatureResult = decryptVerifyResult.getSignatureResult();
+
+                        // display signature result in activity
+                        onSignatureResult(signatureResult);
+                    }
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(saveHandler);
+        intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+        // show progress dialog
+        saveHandler.showProgressDialog(getActivity());
+
+        // start service with intent
+        getActivity().startService(intent);
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode) {
+            case RESULT_CODE_FILE: {
+                if (resultCode == Activity.RESULT_OK && data != null) {
+                    try {
+                        String path = FileHelper.getPath(getActivity(), data.getData());
+                        Log.d(Constants.TAG, "path=" + path);
+
+                        mFilename.setText(path);
+                    } catch (NullPointerException e) {
+                        Log.e(Constants.TAG, "Nullpointer while retrieving path!");
+                    }
+                }
+                return;
+            }
+
+            default: {
+                super.onActivityResult(requestCode, resultCode, data);
+
+                break;
+            }
+        }
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFragment.java

@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.support.v4.app.Fragment;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.ImageView;
+import android.widget.RelativeLayout;
+import android.widget.TextView;
+
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import com.devspark.appmsg.AppMsg;
+
+import org.openintents.openpgp.OpenPgpSignatureResult;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
+import org.sufficientlysecure.keychain.provider.KeychainContract;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.ui.dialog.PassphraseDialogFragment;
+
+public class DecryptFragment extends Fragment {
+    private static final int RESULT_CODE_LOOKUP_KEY = 0x00007006;
+
+    protected long mSignatureKeyId = 0;
+
+    protected RelativeLayout mSignatureLayout = null;
+    protected ImageView mSignatureStatusImage = null;
+    protected TextView mUserId = null;
+    protected TextView mUserIdRest = null;
+
+    protected BootstrapButton mLookupKey = null;
+
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mSignatureLayout = (RelativeLayout) getView().findViewById(R.id.signature);
+        mSignatureStatusImage = (ImageView) getView().findViewById(R.id.ic_signature_status);
+        mUserId = (TextView) getView().findViewById(R.id.mainUserId);
+        mUserIdRest = (TextView) getView().findViewById(R.id.mainUserIdRest);
+        mLookupKey = (BootstrapButton) getView().findViewById(R.id.lookup_key);
+        mLookupKey.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                lookupUnknownKey(mSignatureKeyId);
+            }
+        });
+        mSignatureLayout.setVisibility(View.GONE);
+        mSignatureLayout.setOnClickListener(new OnClickListener() {
+            public void onClick(View v) {
+                lookupUnknownKey(mSignatureKeyId);
+            }
+        });
+    }
+
+    private void lookupUnknownKey(long unknownKeyId) {
+        Intent intent = new Intent(getActivity(), ImportKeysActivity.class);
+        intent.setAction(ImportKeysActivity.ACTION_IMPORT_KEY_FROM_KEYSERVER);
+        intent.putExtra(ImportKeysActivity.EXTRA_KEY_ID, unknownKeyId);
+        startActivityForResult(intent, RESULT_CODE_LOOKUP_KEY);
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode) {
+
+            case RESULT_CODE_LOOKUP_KEY: {
+                if (resultCode == Activity.RESULT_OK) {
+                    // TODO: generate new OpenPgpSignatureResult and display it
+                }
+                return;
+            }
+
+            default: {
+                super.onActivityResult(requestCode, resultCode, data);
+
+                break;
+            }
+        }
+    }
+
+    protected void onSignatureResult(OpenPgpSignatureResult signatureResult) {
+        mSignatureKeyId = 0;
+        mSignatureLayout.setVisibility(View.GONE);
+        if (signatureResult != null) {
+
+            mSignatureKeyId = signatureResult.getKeyId();
+
+            String userId = signatureResult.getUserId();
+            String[] userIdSplit = PgpKeyHelper.splitUserId(userId);
+            if (userIdSplit[0] != null) {
+                mUserId.setText(userId);
+            } else {
+                mUserId.setText(R.string.user_id_no_name);
+            }
+            if (userIdSplit[1] != null) {
+                mUserIdRest.setText(userIdSplit[1]);
+            } else {
+                mUserIdRest.setText(getString(R.string.label_key_id) + ": "
+                        + PgpKeyHelper.convertKeyIdToHex(mSignatureKeyId));
+            }
+
+            switch (signatureResult.getStatus()) {
+                case OpenPgpSignatureResult.SIGNATURE_SUCCESS_UNCERTIFIED: {
+                    mSignatureStatusImage.setImageResource(R.drawable.overlay_ok);
+                    mLookupKey.setVisibility(View.GONE);
+                    break;
+                }
+
+                // TODO!
+//                            case OpenPgpSignatureResult.SIGNATURE_SUCCESS_CERTIFIED: {
+//                                break;
+//                            }
+
+                case OpenPgpSignatureResult.SIGNATURE_UNKNOWN_PUB_KEY: {
+                    mSignatureStatusImage.setImageResource(R.drawable.overlay_error);
+                    mLookupKey.setVisibility(View.VISIBLE);
+                    AppMsg.makeText(getActivity(),
+                            R.string.unknown_signature,
+                            AppMsg.STYLE_ALERT).show();
+                    break;
+                }
+
+                default: {
+                    mSignatureStatusImage.setImageResource(R.drawable.overlay_error);
+                    mLookupKey.setVisibility(View.GONE);
+                    break;
+                }
+            }
+            mSignatureLayout.setVisibility(View.VISIBLE);
+        }
+    }
+
+    protected void showPassphraseDialog(long keyId) {
+        PassphraseDialogFragment.show(getActivity(), keyId,
+            new Handler() {
+                @Override
+                public void handleMessage(Message message) {
+                    if (message.what == PassphraseDialogFragment.MESSAGE_OKAY) {
+                        String passphrase =
+                                message.getData().getString(PassphraseDialogFragment.MESSAGE_DATA_PASSPHRASE);
+                        decryptStart(passphrase);
+                    }
+                }
+            });
+    }
+
+    /**
+     * Should be overridden by MessageFragment and FileFragment to start actual decryption
+     *
+     * @param passphrase
+     */
+    protected void decryptStart(String passphrase) {
+
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptMessageFragment.java

@@ -0,0 +1,189 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.ProgressDialog;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Message;
+import android.os.Messenger;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.EditText;
+
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import com.devspark.appmsg.AppMsg;
+
+import org.openintents.openpgp.OpenPgpSignatureResult;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.compatibility.ClipboardReflection;
+import org.sufficientlysecure.keychain.pgp.PgpDecryptVerifyResult;
+import org.sufficientlysecure.keychain.pgp.PgpHelper;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.util.regex.Matcher;
+
+public class DecryptMessageFragment extends DecryptFragment {
+    public static final String ARG_CIPHERTEXT = "ciphertext";
+
+    // view
+    private EditText mMessage;
+    private BootstrapButton mDecryptButton;
+    private BootstrapButton mDecryptFromCLipboardButton;
+
+    // model
+    private String mCiphertext;
+
+    /**
+     * Inflate the layout for this fragment
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.decrypt_message_fragment, container, false);
+
+        mMessage = (EditText) view.findViewById(R.id.message);
+        mDecryptButton = (BootstrapButton) view.findViewById(R.id.action_decrypt);
+        mDecryptFromCLipboardButton = (BootstrapButton) view.findViewById(R.id.action_decrypt_from_clipboard);
+        mDecryptButton.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                decryptClicked();
+            }
+        });
+        mDecryptFromCLipboardButton.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                decryptFromClipboardClicked();
+            }
+        });
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        String ciphertext = getArguments().getString(ARG_CIPHERTEXT);
+        if (ciphertext != null) {
+            mMessage.setText(ciphertext);
+            decryptStart(null);
+        }
+    }
+
+    private void decryptClicked() {
+        mCiphertext = mMessage.getText().toString();
+        decryptStart(null);
+    }
+
+    private void decryptFromClipboardClicked() {
+        CharSequence clipboardText = ClipboardReflection.getClipboardText(getActivity());
+
+        // only decrypt if clipboard content is available and a pgp message or cleartext signature
+        if (clipboardText != null) {
+            Matcher matcher = PgpHelper.PGP_MESSAGE.matcher(clipboardText);
+            if (!matcher.matches()) {
+                matcher = PgpHelper.PGP_CLEARTEXT_SIGNATURE.matcher(clipboardText);
+            }
+            if (matcher.matches()) {
+                mCiphertext = matcher.group(1);
+                decryptStart(null);
+            } else {
+                AppMsg.makeText(getActivity(), R.string.error_invalid_data, AppMsg.STYLE_INFO)
+                        .show();
+            }
+        } else {
+            AppMsg.makeText(getActivity(), R.string.error_invalid_data, AppMsg.STYLE_INFO)
+                    .show();
+        }
+    }
+
+    @Override
+    protected void decryptStart(String passphrase) {
+        Log.d(Constants.TAG, "decryptStart");
+
+        // Send all information needed to service to decrypt in other thread
+        Intent intent = new Intent(getActivity(), KeychainIntentService.class);
+
+        // fill values for this action
+        Bundle data = new Bundle();
+
+        intent.setAction(KeychainIntentService.ACTION_DECRYPT_VERIFY);
+
+        // data
+        data.putInt(KeychainIntentService.TARGET, KeychainIntentService.TARGET_BYTES);
+        data.putByteArray(KeychainIntentService.DECRYPT_CIPHERTEXT_BYTES, mCiphertext.getBytes());
+        data.putString(KeychainIntentService.DECRYPT_PASSPHRASE, passphrase);
+
+        intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+        // Message is received after encrypting is done in KeychainIntentService
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity(),
+                getString(R.string.progress_decrypting), ProgressDialog.STYLE_HORIZONTAL) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+                    // get returned data bundle
+                    Bundle returnData = message.getData();
+
+                    PgpDecryptVerifyResult decryptVerifyResult =
+                            returnData.getParcelable(KeychainIntentService.RESULT_DECRYPT_VERIFY_RESULT);
+
+                    if (PgpDecryptVerifyResult.KEY_PASSHRASE_NEEDED == decryptVerifyResult.getStatus()) {
+                        showPassphraseDialog(decryptVerifyResult.getKeyIdPassphraseNeeded());
+                    } else if (PgpDecryptVerifyResult.SYMMETRIC_PASSHRASE_NEEDED ==
+                                    decryptVerifyResult.getStatus()) {
+                        showPassphraseDialog(Id.key.symmetric);
+                    } else {
+                        AppMsg.makeText(getActivity(), R.string.decryption_successful,
+                                AppMsg.STYLE_INFO).show();
+
+                        byte[] decryptedMessage = returnData
+                                .getByteArray(KeychainIntentService.RESULT_DECRYPTED_BYTES);
+                        mMessage.setText(new String(decryptedMessage));
+                        mMessage.setHorizontallyScrolling(false);
+
+                        OpenPgpSignatureResult signatureResult = decryptVerifyResult.getSignatureResult();
+
+                        // display signature result in activity
+                        onSignatureResult(signatureResult);
+                    }
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(saveHandler);
+        intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+        // show progress dialog
+        saveHandler.showProgressDialog(getActivity());
+
+        // start service with intent
+        getActivity().startService(intent);
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DrawerActivity.java

@@ -0,0 +1,295 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.content.res.Configuration;
+import android.graphics.Color;
+import android.os.Bundle;
+import android.support.v4.app.ActionBarDrawerToggle;
+import android.support.v4.view.GravityCompat;
+import android.support.v4.widget.DrawerLayout;
+import android.support.v7.app.ActionBarActivity;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+import android.widget.TextView;
+
+import com.beardedhen.androidbootstrap.FontAwesomeText;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+
+public class DrawerActivity extends ActionBarActivity {
+    private DrawerLayout mDrawerLayout;
+    private ListView mDrawerList;
+    private ActionBarDrawerToggle mDrawerToggle;
+
+    private CharSequence mDrawerTitle;
+    private CharSequence mTitle;
+    private boolean mIsDrawerLocked = false;
+
+    private Class mSelectedItem;
+
+    private static final int MENU_ID_PREFERENCE = 222;
+    private static final int MENU_ID_HELP = 223;
+
+    protected void setupDrawerNavigation(Bundle savedInstanceState) {
+        mDrawerTitle = getString(R.string.app_name);
+        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
+        mDrawerList = (ListView) findViewById(R.id.left_drawer);
+        ViewGroup viewGroup = (ViewGroup) findViewById(R.id.content_frame);
+        int leftMarginLoaded = ((ViewGroup.MarginLayoutParams) viewGroup.getLayoutParams()).leftMargin;
+        int leftMarginInTablets = (int) getResources().getDimension(R.dimen.drawer_size);
+        int errorInMarginAllowed = 5;
+
+        // if the left margin of the loaded layout is close to the
+        // one used in tablets then set drawer as open and locked
+        if (Math.abs(leftMarginLoaded - leftMarginInTablets) < errorInMarginAllowed) {
+            mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_OPEN, mDrawerList);
+            mDrawerLayout.setScrimColor(Color.TRANSPARENT);
+            mIsDrawerLocked = true;
+        } else {
+            // set a custom shadow that overlays the main content when the drawer opens
+            mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
+            mIsDrawerLocked = false;
+        }
+
+        NavItem mItemIconTexts[] = new NavItem[]{
+                new NavItem("fa-user", getString(R.string.nav_contacts)),
+                new NavItem("fa-lock", getString(R.string.nav_encrypt)),
+                new NavItem("fa-unlock", getString(R.string.nav_decrypt)),
+                new NavItem("fa-android", getString(R.string.nav_apps))};
+
+        mDrawerList.setAdapter(new NavigationDrawerAdapter(this, R.layout.drawer_list_item,
+                mItemIconTexts));
+
+        mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
+
+        // enable ActionBar app icon to behave as action to toggle nav drawer
+        // if the drawer is not locked
+        if (!mIsDrawerLocked) {
+            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+            getSupportActionBar().setHomeButtonEnabled(true);
+        }
+
+        // ActionBarDrawerToggle ties together the the proper interactions
+        // between the sliding drawer and the action bar app icon
+        mDrawerToggle = new ActionBarDrawerToggle(this, /* host Activity */
+                mDrawerLayout, /* DrawerLayout object */
+                R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
+                R.string.drawer_open, /* "open drawer" description for accessibility */
+                R.string.drawer_close /* "close drawer" description for accessibility */
+        ) {
+            public void onDrawerClosed(View view) {
+                getSupportActionBar().setTitle(mTitle);
+
+                callIntentForDrawerItem(mSelectedItem);
+            }
+
+            public void onDrawerOpened(View drawerView) {
+                mTitle = getSupportActionBar().getTitle();
+                getSupportActionBar().setTitle(mDrawerTitle);
+                // creates call to onPrepareOptionsMenu()
+                supportInvalidateOptionsMenu();
+            }
+        };
+
+        if (!mIsDrawerLocked) {
+            mDrawerLayout.setDrawerListener(mDrawerToggle);
+        } else {
+            // If the drawer is locked open make it un-focusable
+            // so that it doesn't consume all the Back button presses
+            mDrawerLayout.setFocusableInTouchMode(false);
+        }
+    }
+
+    /**
+     * Uses startActivity to call the Intent of the given class
+     *
+     * @param drawerItem the class of the drawer item you want to load. Based on Constants.DrawerItems.*
+     */
+    public void callIntentForDrawerItem(Class drawerItem) {
+        // creates call to onPrepareOptionsMenu()
+        supportInvalidateOptionsMenu();
+
+        // call intent activity if selected
+        if (drawerItem != null) {
+            finish();
+            overridePendingTransition(0, 0);
+
+            Intent intent = new Intent(this, drawerItem);
+            startActivity(intent);
+
+            // disable animation of activity start
+            overridePendingTransition(0, 0);
+        }
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        if (mDrawerToggle == null) {
+            return super.onCreateOptionsMenu(menu);
+        }
+
+        menu.add(42, MENU_ID_PREFERENCE, 100, R.string.menu_preferences);
+        menu.add(42, MENU_ID_HELP, 101, R.string.menu_help);
+
+        return super.onCreateOptionsMenu(menu);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        if (mDrawerToggle == null) {
+            return super.onOptionsItemSelected(item);
+        }
+
+        // The action bar home/up action should open or close the drawer.
+        // ActionBarDrawerToggle will take care of this.
+        if (mDrawerToggle.onOptionsItemSelected(item)) {
+            return true;
+        }
+
+        switch (item.getItemId()) {
+            case MENU_ID_PREFERENCE: {
+                Intent intent = new Intent(this, PreferencesActivity.class);
+                startActivity(intent);
+                return true;
+            }
+            case MENU_ID_HELP: {
+                Intent intent = new Intent(this, HelpActivity.class);
+                startActivity(intent);
+                return true;
+            }
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+
+    /**
+     * The click listener for ListView in the navigation drawer
+     */
+    private class DrawerItemClickListener implements ListView.OnItemClickListener {
+        @Override
+        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+            selectItem(position);
+        }
+    }
+
+    private void selectItem(int position) {
+        // update selected item and title, then close the drawer
+        mDrawerList.setItemChecked(position, true);
+        // set selected class
+        mSelectedItem = Constants.DrawerItems.ARRAY[position];
+
+        // setTitle(mDrawerTitles[position]);
+        // If drawer isn't locked just close the drawer and
+        // it will move to the selected item by itself (via drawer toggle listener)
+        if (!mIsDrawerLocked) {
+            mDrawerLayout.closeDrawer(mDrawerList);
+            // else move to the selected item yourself
+        } else {
+            callIntentForDrawerItem(mSelectedItem);
+        }
+    }
+
+    /**
+     * When using the ActionBarDrawerToggle, you must call it during onPostCreate() and
+     * onConfigurationChanged()...
+     */
+    @Override
+    protected void onPostCreate(Bundle savedInstanceState) {
+        super.onPostCreate(savedInstanceState);
+        // Sync the toggle state after onRestoreInstanceState has occurred.
+        if (mDrawerToggle != null) {
+            mDrawerToggle.syncState();
+        }
+    }
+
+    @Override
+    public void onConfigurationChanged(Configuration newConfig) {
+        super.onConfigurationChanged(newConfig);
+        // Pass any configuration change to the drawer toggles
+        if (mDrawerToggle != null) {
+            mDrawerToggle.onConfigurationChanged(newConfig);
+        }
+    }
+
+    private class NavItem {
+        public String icon;
+        public String title;
+
+        public NavItem(String icon, String title) {
+            super();
+            this.icon = icon;
+            this.title = title;
+        }
+    }
+
+    private class NavigationDrawerAdapter extends ArrayAdapter<NavItem> {
+        Context mContext;
+        int mLayoutResourceId;
+        NavItem mData[] = null;
+
+        public NavigationDrawerAdapter(Context context, int layoutResourceId, NavItem[] data) {
+            super(context, layoutResourceId, data);
+            this.mLayoutResourceId = layoutResourceId;
+            this.mContext = context;
+            this.mData = data;
+        }
+
+        @Override
+        public View getView(int position, View convertView, ViewGroup parent) {
+            View row = convertView;
+            NavItemHolder holder;
+
+            if (row == null) {
+                LayoutInflater inflater = ((Activity) mContext).getLayoutInflater();
+                row = inflater.inflate(mLayoutResourceId, parent, false);
+
+                holder = new NavItemHolder();
+                holder.mImg = (FontAwesomeText) row.findViewById(R.id.drawer_item_icon);
+                holder.mTxtTitle = (TextView) row.findViewById(R.id.drawer_item_text);
+
+                row.setTag(holder);
+            } else {
+                holder = (NavItemHolder) row.getTag();
+            }
+
+            NavItem item = mData[position];
+            holder.mTxtTitle.setText(item.title);
+            holder.mImg.setIcon(item.icon);
+
+            return row;
+        }
+
+    }
+
+    static class NavItemHolder {
+        FontAwesomeText mImg;
+        TextView mTxtTitle;
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EditKeyActivity.java

@@ -0,0 +1,760 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.ProgressDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.os.Messenger;
+import android.support.v4.app.ActivityCompat;
+import android.support.v7.app.ActionBarActivity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.CheckBox;
+import android.widget.CompoundButton;
+import android.widget.CompoundButton.OnCheckedChangeListener;
+import android.widget.LinearLayout;
+
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import com.devspark.appmsg.AppMsg;
+
+import org.spongycastle.openpgp.PGPSecretKey;
+import org.spongycastle.openpgp.PGPSecretKeyRing;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.ActionBarHelper;
+import org.sufficientlysecure.keychain.helper.ExportHelper;
+import org.sufficientlysecure.keychain.pgp.PgpConversionHelper;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
+import org.sufficientlysecure.keychain.provider.KeychainContract;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.PassphraseCacheService;
+import org.sufficientlysecure.keychain.service.SaveKeyringParcel;
+import org.sufficientlysecure.keychain.ui.dialog.PassphraseDialogFragment;
+import org.sufficientlysecure.keychain.ui.dialog.SetPassphraseDialogFragment;
+import org.sufficientlysecure.keychain.ui.widget.Editor;
+import org.sufficientlysecure.keychain.ui.widget.Editor.EditorListener;
+import org.sufficientlysecure.keychain.ui.widget.KeyEditor;
+import org.sufficientlysecure.keychain.ui.widget.SectionView;
+import org.sufficientlysecure.keychain.ui.widget.UserIdEditor;
+import org.sufficientlysecure.keychain.util.IterableIterator;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.util.ArrayList;
+import java.util.GregorianCalendar;
+import java.util.List;
+import java.util.Vector;
+
+public class EditKeyActivity extends ActionBarActivity implements EditorListener {
+
+    // Actions for internal use only:
+    public static final String ACTION_CREATE_KEY = Constants.INTENT_PREFIX + "CREATE_KEY";
+    public static final String ACTION_EDIT_KEY = Constants.INTENT_PREFIX + "EDIT_KEY";
+
+    // possible extra keys
+    public static final String EXTRA_USER_IDS = "user_ids";
+    public static final String EXTRA_NO_PASSPHRASE = "no_passphrase";
+    public static final String EXTRA_GENERATE_DEFAULT_KEYS = "generate_default_keys";
+
+    // EDIT
+    private Uri mDataUri;
+
+    private PGPSecretKeyRing mKeyRing = null;
+
+    private SectionView mUserIdsView;
+    private SectionView mKeysView;
+
+    private String mCurrentPassphrase = null;
+    private String mNewPassphrase = null;
+    private String mSavedNewPassphrase = null;
+    private boolean mIsPassphraseSet;
+    private boolean mNeedsSaving;
+    private boolean mIsBrandNewKeyring = false;
+
+    private BootstrapButton mChangePassphrase;
+
+    private CheckBox mNoPassphrase;
+
+    Vector<String> mUserIds;
+    Vector<PGPSecretKey> mKeys;
+    Vector<Integer> mKeysUsages;
+    boolean mMasterCanSign = true;
+
+    ExportHelper mExportHelper;
+
+    public boolean needsSaving() {
+        mNeedsSaving = (mUserIdsView == null) ? false : mUserIdsView.needsSaving();
+        mNeedsSaving |= (mKeysView == null) ? false : mKeysView.needsSaving();
+        mNeedsSaving |= hasPassphraseChanged();
+        mNeedsSaving |= mIsBrandNewKeyring;
+        return mNeedsSaving;
+    }
+
+
+    public void somethingChanged() {
+        ActivityCompat.invalidateOptionsMenu(this);
+    }
+
+    public void onDeleted(Editor e, boolean wasNewItem) {
+        somethingChanged();
+    }
+
+    public void onEdited() {
+        somethingChanged();
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        mExportHelper = new ExportHelper(this);
+
+        // Inflate a "Done"/"Cancel" custom action bar view
+        ActionBarHelper.setTwoButtonView(getSupportActionBar(),
+                R.string.btn_save, R.drawable.ic_action_save,
+                new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        // Save
+                        saveClicked();
+                    }
+                }, R.string.menu_key_edit_cancel, R.drawable.ic_action_cancel,
+                new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        // Cancel
+                        cancelClicked();
+                    }
+                }
+        );
+
+        mUserIds = new Vector<String>();
+        mKeys = new Vector<PGPSecretKey>();
+        mKeysUsages = new Vector<Integer>();
+
+        // Catch Intents opened from other apps
+        Intent intent = getIntent();
+        String action = intent.getAction();
+        if (ACTION_CREATE_KEY.equals(action)) {
+            handleActionCreateKey(intent);
+        } else if (ACTION_EDIT_KEY.equals(action)) {
+            handleActionEditKey(intent);
+        }
+    }
+
+    /**
+     * Handle intent action to create new key
+     *
+     * @param intent
+     */
+    private void handleActionCreateKey(Intent intent) {
+        Bundle extras = intent.getExtras();
+
+        mCurrentPassphrase = "";
+        mIsBrandNewKeyring = true;
+
+        if (extras != null) {
+            // if userId is given, prefill the fields
+            if (extras.containsKey(EXTRA_USER_IDS)) {
+                Log.d(Constants.TAG, "UserIds are given!");
+                mUserIds.add(extras.getString(EXTRA_USER_IDS));
+            }
+
+            // if no passphrase is given
+            if (extras.containsKey(EXTRA_NO_PASSPHRASE)) {
+                boolean noPassphrase = extras.getBoolean(EXTRA_NO_PASSPHRASE);
+                if (noPassphrase) {
+                    // check "no passphrase" checkbox and remove button
+                    mNoPassphrase.setChecked(true);
+                    mChangePassphrase.setVisibility(View.GONE);
+                }
+            }
+
+            // generate key
+            if (extras.containsKey(EXTRA_GENERATE_DEFAULT_KEYS)) {
+                boolean generateDefaultKeys = extras.getBoolean(EXTRA_GENERATE_DEFAULT_KEYS);
+                if (generateDefaultKeys) {
+
+                    // Send all information needed to service generate keys in other thread
+                    final Intent serviceIntent = new Intent(this, KeychainIntentService.class);
+                    serviceIntent.setAction(KeychainIntentService.ACTION_GENERATE_DEFAULT_RSA_KEYS);
+
+                    // fill values for this action
+                    Bundle data = new Bundle();
+                    data.putString(KeychainIntentService.GENERATE_KEY_SYMMETRIC_PASSPHRASE,
+                            mCurrentPassphrase);
+
+                    serviceIntent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+                    // Message is received after generating is done in KeychainIntentService
+                    KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(
+                            this, getResources().getQuantityString(R.plurals.progress_generating, 1),
+                            ProgressDialog.STYLE_HORIZONTAL, true,
+
+                            new DialogInterface.OnCancelListener() {
+                                @Override
+                                public void onCancel(DialogInterface dialog) {
+                                    // Stop key generation on cancel
+                                    stopService(serviceIntent);
+                                    EditKeyActivity.this.setResult(Activity.RESULT_CANCELED);
+                                    EditKeyActivity.this.finish();
+                                }
+                            }) {
+
+                        @Override
+                        public void handleMessage(Message message) {
+                            // handle messages by standard KeychainIntentServiceHandler first
+                            super.handleMessage(message);
+
+                            if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+                                // get new key from data bundle returned from service
+                                Bundle data = message.getData();
+
+                                ArrayList<PGPSecretKey> newKeys =
+                                        PgpConversionHelper.BytesToPGPSecretKeyList(data
+                                                .getByteArray(KeychainIntentService.RESULT_NEW_KEY));
+
+                                ArrayList<Integer> keyUsageFlags = data.getIntegerArrayList(
+                                        KeychainIntentService.RESULT_KEY_USAGES);
+
+                                if (newKeys.size() == keyUsageFlags.size()) {
+                                    for (int i = 0; i < newKeys.size(); ++i) {
+                                        mKeys.add(newKeys.get(i));
+                                        mKeysUsages.add(keyUsageFlags.get(i));
+                                    }
+                                }
+
+                                buildLayout(true);
+                            }
+                        }
+                    };
+
+                    // Create a new Messenger for the communication back
+                    Messenger messenger = new Messenger(saveHandler);
+                    serviceIntent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+                    saveHandler.showProgressDialog(this);
+
+                    // start service with intent
+                    startService(serviceIntent);
+                }
+            }
+        } else {
+            buildLayout(false);
+        }
+    }
+
+    /**
+     * Handle intent action to edit existing key
+     *
+     * @param intent
+     */
+    private void handleActionEditKey(Intent intent) {
+        mDataUri = intent.getData();
+        if (mDataUri == null) {
+            Log.e(Constants.TAG, "Intent data missing. Should be Uri of key!");
+            finish();
+        } else {
+            Log.d(Constants.TAG, "uri: " + mDataUri);
+
+            // get master key id using row id
+            long masterKeyId = ProviderHelper.getMasterKeyId(this, mDataUri);
+            finallyEdit(masterKeyId);
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    private void finallyEdit(final long masterKeyId) {
+        if (masterKeyId != 0) {
+            PGPSecretKey masterKey = null;
+            mKeyRing = ProviderHelper.getPGPSecretKeyRing(this, masterKeyId);
+            if (mKeyRing != null) {
+                masterKey = mKeyRing.getSecretKey();
+                mMasterCanSign = PgpKeyHelper.isCertificationKey(mKeyRing.getSecretKey());
+                for (PGPSecretKey key : new IterableIterator<PGPSecretKey>(mKeyRing.getSecretKeys())) {
+                    mKeys.add(key);
+                    mKeysUsages.add(-1); // get usage when view is created
+                }
+            } else {
+                Log.e(Constants.TAG, "Keyring not found with masterKeyId: " + masterKeyId);
+                AppMsg.makeText(this, R.string.error_no_secret_key_found, AppMsg.STYLE_ALERT).show();
+                // TODO
+            }
+            if (masterKey != null) {
+                boolean isSet = false;
+                for (String userId : new IterableIterator<String>(masterKey.getUserIDs())) {
+                    Log.d(Constants.TAG, "Added userId " + userId);
+                    if (!isSet) {
+                        isSet = true;
+                        String[] parts = PgpKeyHelper.splitUserId(userId);
+                        if (parts[0] != null) {
+                            setTitle(parts[0]);
+                        }
+                    }
+                    mUserIds.add(userId);
+                }
+            }
+        }
+
+        mCurrentPassphrase = "";
+        buildLayout(false);
+
+        mIsPassphraseSet = PassphraseCacheService.hasPassphrase(this, masterKeyId);
+        if (!mIsPassphraseSet) {
+            // check "no passphrase" checkbox and remove button
+            mNoPassphrase.setChecked(true);
+            mChangePassphrase.setVisibility(View.GONE);
+        }
+    }
+
+    /**
+     * Shows the dialog to set a new passphrase
+     */
+    private void showSetPassphraseDialog() {
+        // Message is received after passphrase is cached
+        Handler returnHandler = new Handler() {
+            @Override
+            public void handleMessage(Message message) {
+                if (message.what == SetPassphraseDialogFragment.MESSAGE_OKAY) {
+                    Bundle data = message.getData();
+
+                    // set new returned passphrase!
+                    mNewPassphrase = data
+                            .getString(SetPassphraseDialogFragment.MESSAGE_NEW_PASSPHRASE);
+
+                    updatePassphraseButtonText();
+                    somethingChanged();
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(returnHandler);
+
+        // set title based on isPassphraseSet()
+        int title;
+        if (isPassphraseSet()) {
+            title = R.string.title_change_passphrase;
+        } else {
+            title = R.string.title_set_passphrase;
+        }
+
+        SetPassphraseDialogFragment setPassphraseDialog = SetPassphraseDialogFragment.newInstance(
+                messenger, title);
+
+        setPassphraseDialog.show(getSupportFragmentManager(), "setPassphraseDialog");
+    }
+
+    /**
+     * Build layout based on mUserId, mKeys and mKeysUsages Vectors. It creates Views for every user
+     * id and key.
+     *
+     * @param newKeys
+     */
+    private void buildLayout(boolean newKeys) {
+        setContentView(R.layout.edit_key_activity);
+
+        // find views
+        mChangePassphrase = (BootstrapButton) findViewById(R.id.edit_key_btn_change_passphrase);
+        mNoPassphrase = (CheckBox) findViewById(R.id.edit_key_no_passphrase);
+        // Build layout based on given userIds and keys
+
+        LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+
+        LinearLayout container = (LinearLayout) findViewById(R.id.edit_key_container);
+        if (mIsPassphraseSet) {
+            mChangePassphrase.setText(getString(R.string.btn_change_passphrase));
+        }
+        mUserIdsView = (SectionView) inflater.inflate(R.layout.edit_key_section, container, false);
+        mUserIdsView.setType(Id.type.user_id);
+        mUserIdsView.setCanBeEdited(mMasterCanSign);
+        mUserIdsView.setUserIds(mUserIds);
+        mUserIdsView.setEditorListener(this);
+        container.addView(mUserIdsView);
+        mKeysView = (SectionView) inflater.inflate(R.layout.edit_key_section, container, false);
+        mKeysView.setType(Id.type.key);
+        mKeysView.setCanBeEdited(mMasterCanSign);
+        mKeysView.setKeys(mKeys, mKeysUsages, newKeys);
+        mKeysView.setEditorListener(this);
+        container.addView(mKeysView);
+
+        updatePassphraseButtonText();
+
+        mChangePassphrase.setOnClickListener(new OnClickListener() {
+            public void onClick(View v) {
+                showSetPassphraseDialog();
+            }
+        });
+
+        // disable passphrase when no passphrase checkbox is checked!
+        mNoPassphrase.setOnCheckedChangeListener(new OnCheckedChangeListener() {
+
+            @Override
+            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+                if (isChecked) {
+                    // remove passphrase
+                    mSavedNewPassphrase = mNewPassphrase;
+                    mNewPassphrase = "";
+                    mChangePassphrase.setVisibility(View.GONE);
+                } else {
+                    mNewPassphrase = mSavedNewPassphrase;
+                    mChangePassphrase.setVisibility(View.VISIBLE);
+                }
+                somethingChanged();
+            }
+        });
+    }
+
+    private long getMasterKeyId() {
+        if (mKeysView.getEditors().getChildCount() == 0) {
+            return 0;
+        }
+        return ((KeyEditor) mKeysView.getEditors().getChildAt(0)).getValue().getKeyID();
+    }
+
+    public boolean isPassphraseSet() {
+        if (mNoPassphrase.isChecked()) {
+            return true;
+        } else if ((mIsPassphraseSet)
+                || (mNewPassphrase != null && !mNewPassphrase.equals(""))) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    public boolean hasPassphraseChanged() {
+        if (mNoPassphrase != null) {
+            if (mNoPassphrase.isChecked()) {
+                return mIsPassphraseSet;
+            } else {
+                return (mNewPassphrase != null && !mNewPassphrase.equals(""));
+            }
+        } else {
+            return false;
+        }
+    }
+
+    private void saveClicked() {
+        final long masterKeyId = getMasterKeyId();
+        if (needsSaving()) { //make sure, as some versions don't support invalidateOptionsMenu
+            try {
+                if (!isPassphraseSet()) {
+                    throw new PgpGeneralException(this.getString(R.string.set_a_passphrase));
+                }
+
+                String passphrase;
+                if (mIsPassphraseSet) {
+                    passphrase = PassphraseCacheService.getCachedPassphrase(this, masterKeyId);
+                } else {
+                    passphrase = "";
+                }
+                if (passphrase == null) {
+                    PassphraseDialogFragment.show(this, masterKeyId,
+                            new Handler() {
+                                @Override
+                                public void handleMessage(Message message) {
+                                    if (message.what == PassphraseDialogFragment.MESSAGE_OKAY) {
+                                        mCurrentPassphrase = PassphraseCacheService.getCachedPassphrase(
+                                                EditKeyActivity.this, masterKeyId);
+                                        checkEmptyIDsWanted();
+                                    }
+                                }
+                            });
+                } else {
+                    mCurrentPassphrase = passphrase;
+                    checkEmptyIDsWanted();
+                }
+            } catch (PgpGeneralException e) {
+                AppMsg.makeText(this, getString(R.string.error_message, e.getMessage()),
+                        AppMsg.STYLE_ALERT).show();
+            }
+        } else {
+            AppMsg.makeText(this, R.string.error_change_something_first, AppMsg.STYLE_ALERT).show();
+        }
+    }
+
+    private void checkEmptyIDsWanted() {
+        try {
+            ArrayList<String> userIDs = getUserIds(mUserIdsView);
+            List<Boolean> newIDs = mUserIdsView.getNewIDFlags();
+            ArrayList<String> originalIDs = mUserIdsView.getOriginalIDs();
+            int curID = 0;
+            for (String userID : userIDs) {
+                if (userID.equals("") && (!userID.equals(originalIDs.get(curID)) || newIDs.get(curID))) {
+                    AlertDialog.Builder alert = new AlertDialog.Builder(
+                            EditKeyActivity.this);
+
+                    alert.setIcon(R.drawable.ic_dialog_alert_holo_light);
+                    alert.setTitle(R.string.warning);
+                    alert.setMessage(EditKeyActivity.this.getString(R.string.ask_empty_id_ok));
+
+                    alert.setPositiveButton(EditKeyActivity.this.getString(android.R.string.yes),
+                            new DialogInterface.OnClickListener() {
+                                public void onClick(DialogInterface dialog, int id) {
+                                    dialog.dismiss();
+                                    finallySaveClicked();
+                                }
+                            }
+                    );
+                    alert.setNegativeButton(this.getString(android.R.string.no),
+                            new DialogInterface.OnClickListener() {
+                                public void onClick(DialogInterface dialog, int id) {
+                                    dialog.dismiss();
+                                }
+                            }
+                    );
+                    alert.setCancelable(false);
+                    alert.create().show();
+                    return;
+                }
+                curID++;
+            }
+        } catch (PgpGeneralException e) {
+            Log.e(Constants.TAG, getString(R.string.error_message, e.getMessage()));
+            AppMsg.makeText(this, getString(R.string.error_message, e.getMessage()), AppMsg.STYLE_ALERT).show();
+        }
+        finallySaveClicked();
+    }
+
+    private boolean[] toPrimitiveArray(final List<Boolean> booleanList) {
+        final boolean[] primitives = new boolean[booleanList.size()];
+        int index = 0;
+        for (Boolean object : booleanList) {
+            primitives[index++] = object;
+        }
+        return primitives;
+    }
+
+    private void finallySaveClicked() {
+        try {
+            // Send all information needed to service to edit key in other thread
+            Intent intent = new Intent(this, KeychainIntentService.class);
+
+            intent.setAction(KeychainIntentService.ACTION_SAVE_KEYRING);
+
+            SaveKeyringParcel saveParams = new SaveKeyringParcel();
+            saveParams.userIDs = getUserIds(mUserIdsView);
+            saveParams.originalIDs = mUserIdsView.getOriginalIDs();
+            saveParams.deletedIDs = mUserIdsView.getDeletedIDs();
+            saveParams.newIDs = toPrimitiveArray(mUserIdsView.getNewIDFlags());
+            saveParams.primaryIDChanged = mUserIdsView.primaryChanged();
+            saveParams.moddedKeys = toPrimitiveArray(mKeysView.getNeedsSavingArray());
+            saveParams.deletedKeys = mKeysView.getDeletedKeys();
+            saveParams.keysExpiryDates = getKeysExpiryDates(mKeysView);
+            saveParams.keysUsages = getKeysUsages(mKeysView);
+            saveParams.newPassphrase = mNewPassphrase;
+            saveParams.oldPassphrase = mCurrentPassphrase;
+            saveParams.newKeys = toPrimitiveArray(mKeysView.getNewKeysArray());
+            saveParams.keys = getKeys(mKeysView);
+            saveParams.originalPrimaryID = mUserIdsView.getOriginalPrimaryID();
+
+
+            // fill values for this action
+            Bundle data = new Bundle();
+            data.putBoolean(KeychainIntentService.SAVE_KEYRING_CAN_SIGN, mMasterCanSign);
+            data.putParcelable(KeychainIntentService.SAVE_KEYRING_PARCEL, saveParams);
+
+            intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+            // Message is received after saving is done in KeychainIntentService
+            KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(this,
+                    getString(R.string.progress_saving), ProgressDialog.STYLE_HORIZONTAL) {
+                public void handleMessage(Message message) {
+                    // handle messages by standard KeychainIntentServiceHandler first
+                    super.handleMessage(message);
+
+                    if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+                        Intent data = new Intent();
+
+                        // return uri pointing to new created key
+                        Uri uri = KeychainContract.KeyRings.buildGenericKeyRingUri(
+                                String.valueOf(getMasterKeyId()));
+                        data.setData(uri);
+
+                        setResult(RESULT_OK, data);
+                        finish();
+                    }
+                }
+            };
+
+            // Create a new Messenger for the communication back
+            Messenger messenger = new Messenger(saveHandler);
+            intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+            saveHandler.showProgressDialog(this);
+
+            // start service with intent
+            startService(intent);
+        } catch (PgpGeneralException e) {
+            Log.e(Constants.TAG, getString(R.string.error_message, e.getMessage()));
+            AppMsg.makeText(this, getString(R.string.error_message, e.getMessage()),
+                    AppMsg.STYLE_ALERT).show();
+        }
+    }
+
+    private void cancelClicked() {
+        if (needsSaving()) { //ask if we want to save
+            AlertDialog.Builder alert = new AlertDialog.Builder(
+                    EditKeyActivity.this);
+
+            alert.setIcon(R.drawable.ic_dialog_alert_holo_light);
+            alert.setTitle(R.string.warning);
+            alert.setMessage(EditKeyActivity.this.getString(R.string.ask_save_changed_key));
+
+            alert.setPositiveButton(EditKeyActivity.this.getString(android.R.string.yes),
+                    new DialogInterface.OnClickListener() {
+                        public void onClick(DialogInterface dialog, int id) {
+                            dialog.dismiss();
+                            saveClicked();
+                        }
+                    });
+            alert.setNegativeButton(this.getString(android.R.string.no),
+                    new DialogInterface.OnClickListener() {
+                        public void onClick(DialogInterface dialog, int id) {
+                            dialog.dismiss();
+                            setResult(RESULT_CANCELED);
+                            finish();
+                        }
+                    });
+            alert.setCancelable(false);
+            alert.create().show();
+        } else {
+            setResult(RESULT_CANCELED);
+            finish();
+        }
+    }
+
+    /**
+     * Returns user ids from the SectionView
+     *
+     * @param userIdsView
+     * @return
+     */
+    private ArrayList<String> getUserIds(SectionView userIdsView) throws PgpGeneralException {
+        ArrayList<String> userIds = new ArrayList<String>();
+
+        ViewGroup userIdEditors = userIdsView.getEditors();
+
+        boolean gotMainUserId = false;
+        for (int i = 0; i < userIdEditors.getChildCount(); ++i) {
+            UserIdEditor editor = (UserIdEditor) userIdEditors.getChildAt(i);
+            String userId;
+            userId = editor.getValue();
+
+            if (editor.isMainUserId()) {
+                userIds.add(0, userId);
+                gotMainUserId = true;
+            } else {
+                userIds.add(userId);
+            }
+        }
+
+        if (userIds.size() == 0) {
+            throw new PgpGeneralException(getString(R.string.error_key_needs_a_user_id));
+        }
+
+        if (!gotMainUserId) {
+            throw new PgpGeneralException(getString(R.string.error_main_user_id_must_not_be_empty));
+        }
+
+        return userIds;
+    }
+
+    /**
+     * Returns keys from the SectionView
+     *
+     * @param keysView
+     * @return
+     */
+    private ArrayList<PGPSecretKey> getKeys(SectionView keysView) throws PgpGeneralException {
+        ArrayList<PGPSecretKey> keys = new ArrayList<PGPSecretKey>();
+
+        ViewGroup keyEditors = keysView.getEditors();
+
+        if (keyEditors.getChildCount() == 0) {
+            throw new PgpGeneralException(getString(R.string.error_key_needs_master_key));
+        }
+
+        for (int i = 0; i < keyEditors.getChildCount(); ++i) {
+            KeyEditor editor = (KeyEditor) keyEditors.getChildAt(i);
+            keys.add(editor.getValue());
+        }
+
+        return keys;
+    }
+
+    /**
+     * Returns usage selections of keys from the SectionView
+     *
+     * @param keysView
+     * @return
+     */
+    private ArrayList<Integer> getKeysUsages(SectionView keysView) throws PgpGeneralException {
+        ArrayList<Integer> keysUsages = new ArrayList<Integer>();
+
+        ViewGroup keyEditors = keysView.getEditors();
+
+        if (keyEditors.getChildCount() == 0) {
+            throw new PgpGeneralException(getString(R.string.error_key_needs_master_key));
+        }
+
+        for (int i = 0; i < keyEditors.getChildCount(); ++i) {
+            KeyEditor editor = (KeyEditor) keyEditors.getChildAt(i);
+            keysUsages.add(editor.getUsage());
+        }
+
+        return keysUsages;
+    }
+
+    private ArrayList<GregorianCalendar> getKeysExpiryDates(SectionView keysView) throws PgpGeneralException {
+        ArrayList<GregorianCalendar> keysExpiryDates = new ArrayList<GregorianCalendar>();
+
+        ViewGroup keyEditors = keysView.getEditors();
+
+        if (keyEditors.getChildCount() == 0) {
+            throw new PgpGeneralException(getString(R.string.error_key_needs_master_key));
+        }
+
+        for (int i = 0; i < keyEditors.getChildCount(); ++i) {
+            KeyEditor editor = (KeyEditor) keyEditors.getChildAt(i);
+            keysExpiryDates.add(editor.getExpiryDate());
+        }
+
+        return keysExpiryDates;
+    }
+
+    private void updatePassphraseButtonText() {
+        mChangePassphrase.setText(isPassphraseSet() ? getString(R.string.btn_change_passphrase)
+                : getString(R.string.btn_set_passphrase));
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptActivity.java

@@ -0,0 +1,256 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.view.PagerTabStrip;
+import android.support.v4.view.ViewPager;
+import android.widget.Toast;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.ActionBarHelper;
+import org.sufficientlysecure.keychain.helper.FileHelper;
+import org.sufficientlysecure.keychain.ui.adapter.PagerTabStripAdapter;
+import org.sufficientlysecure.keychain.util.Log;
+
+public class EncryptActivity extends DrawerActivity implements
+        EncryptSymmetricFragment.OnSymmetricKeySelection,
+        EncryptAsymmetricFragment.OnAsymmetricKeySelection,
+        EncryptActivityInterface {
+
+    /* Intents */
+    public static final String ACTION_ENCRYPT = Constants.INTENT_PREFIX + "ENCRYPT";
+
+    /* EXTRA keys for input */
+    public static final String EXTRA_TEXT = "text";
+
+    // enables ASCII Armor for file encryption when uri is given
+    public static final String EXTRA_ASCII_ARMOR = "ascii_armor";
+
+    // preselect ids, for internal use
+    public static final String EXTRA_SIGNATURE_KEY_ID = "signature_key_id";
+    public static final String EXTRA_ENCRYPTION_KEY_IDS = "encryption_key_ids";
+
+    // view
+    ViewPager mViewPagerMode;
+    PagerTabStrip mPagerTabStripMode;
+    PagerTabStripAdapter mTabsAdapterMode;
+    ViewPager mViewPagerContent;
+    PagerTabStrip mPagerTabStripContent;
+    PagerTabStripAdapter mTabsAdapterContent;
+
+    // tabs
+    Bundle mAsymmetricFragmentBundle = new Bundle();
+    Bundle mSymmetricFragmentBundle = new Bundle();
+    Bundle mMessageFragmentBundle = new Bundle();
+    Bundle mFileFragmentBundle = new Bundle();
+    int mSwitchToMode = PAGER_MODE_ASYMMETRIC;
+    int mSwitchToContent = PAGER_CONTENT_MESSAGE;
+
+    private static final int PAGER_MODE_ASYMMETRIC = 0;
+    private static final int PAGER_MODE_SYMMETRIC = 1;
+    private static final int PAGER_CONTENT_MESSAGE = 0;
+    private static final int PAGER_CONTENT_FILE = 1;
+
+    // model useb by message and file fragment
+    private long mEncryptionKeyIds[] = null;
+    private long mSigningKeyId = Id.key.none;
+    private String mPassphrase;
+    private String mPassphraseAgain;
+
+    @Override
+    public void onSigningKeySelected(long signingKeyId) {
+        mSigningKeyId = signingKeyId;
+    }
+
+    @Override
+    public void onEncryptionKeysSelected(long[] encryptionKeyIds) {
+        mEncryptionKeyIds = encryptionKeyIds;
+    }
+
+    @Override
+    public void onPassphraseUpdate(String passphrase) {
+        mPassphrase = passphrase;
+    }
+
+    @Override
+    public void onPassphraseAgainUpdate(String passphrase) {
+        mPassphraseAgain = passphrase;
+    }
+
+    @Override
+    public boolean isModeSymmetric() {
+        if (PAGER_MODE_SYMMETRIC == mViewPagerMode.getCurrentItem()) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    @Override
+    public long getSignatureKey() {
+        return mSigningKeyId;
+    }
+
+    @Override
+    public long[] getEncryptionKeys() {
+        return mEncryptionKeyIds;
+    }
+
+    @Override
+    public String getPassphrase() {
+        return mPassphrase;
+    }
+
+    @Override
+    public String getPassphraseAgain() {
+        return mPassphraseAgain;
+    }
+
+
+    private void initView() {
+        mViewPagerMode = (ViewPager) findViewById(R.id.encrypt_pager_mode);
+        mPagerTabStripMode = (PagerTabStrip) findViewById(R.id.encrypt_pager_tab_strip_mode);
+        mViewPagerContent = (ViewPager) findViewById(R.id.encrypt_pager_content);
+        mPagerTabStripContent = (PagerTabStrip) findViewById(R.id.encrypt_pager_tab_strip_content);
+
+        mTabsAdapterMode = new PagerTabStripAdapter(this);
+        mViewPagerMode.setAdapter(mTabsAdapterMode);
+        mTabsAdapterContent = new PagerTabStripAdapter(this);
+        mViewPagerContent.setAdapter(mTabsAdapterContent);
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.encrypt_activity);
+
+        // set actionbar without home button if called from another app
+        ActionBarHelper.setBackButton(this);
+
+        initView();
+
+        setupDrawerNavigation(savedInstanceState);
+
+        // Handle intent actions
+        handleActions(getIntent());
+
+        mTabsAdapterMode.addTab(EncryptAsymmetricFragment.class,
+            mAsymmetricFragmentBundle, getString(R.string.label_asymmetric));
+        mTabsAdapterMode.addTab(EncryptSymmetricFragment.class,
+            mSymmetricFragmentBundle, getString(R.string.label_symmetric));
+        mViewPagerMode.setCurrentItem(mSwitchToMode);
+
+        mTabsAdapterContent.addTab(EncryptMessageFragment.class,
+            mMessageFragmentBundle, getString(R.string.label_message));
+        mTabsAdapterContent.addTab(EncryptFileFragment.class,
+            mFileFragmentBundle, getString(R.string.label_file));
+        mViewPagerContent.setCurrentItem(mSwitchToContent);
+    }
+
+    /**
+     * Handles all actions with this intent
+     *
+     * @param intent
+     */
+    private void handleActions(Intent intent) {
+        String action = intent.getAction();
+        Bundle extras = intent.getExtras();
+        String type = intent.getType();
+        Uri uri = intent.getData();
+
+        if (extras == null) {
+            extras = new Bundle();
+        }
+
+        /*
+         * Android's Action
+         */
+        if (Intent.ACTION_SEND.equals(action) && type != null) {
+            // When sending to APG Encrypt via share menu
+            if ("text/plain".equals(type)) {
+                // Plain text
+                String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
+                if (sharedText != null) {
+                    // handle like normal text encryption, override action and extras to later
+                    // executeServiceMethod ACTION_ENCRYPT in main actions
+                    extras.putString(EXTRA_TEXT, sharedText);
+                    extras.putBoolean(EXTRA_ASCII_ARMOR, true);
+                    action = ACTION_ENCRYPT;
+                }
+            } else {
+                // Files via content provider, override uri and action
+                uri = (Uri) intent.getParcelableExtra(Intent.EXTRA_STREAM);
+                action = ACTION_ENCRYPT;
+            }
+        }
+
+        if (extras.containsKey(EXTRA_ASCII_ARMOR)) {
+            boolean requestAsciiArmor = extras.getBoolean(EXTRA_ASCII_ARMOR, true);
+            mFileFragmentBundle.putBoolean(EncryptFileFragment.ARG_ASCII_ARMOR, requestAsciiArmor);
+        }
+
+        String textData = extras.getString(EXTRA_TEXT);
+
+        long signatureKeyId = extras.getLong(EXTRA_SIGNATURE_KEY_ID);
+        long[] encryptionKeyIds = extras.getLongArray(EXTRA_ENCRYPTION_KEY_IDS);
+
+        // preselect keys given by intent
+        mAsymmetricFragmentBundle.putLongArray(EncryptAsymmetricFragment.ARG_ENCRYPTION_KEY_IDS,
+            encryptionKeyIds);
+        mAsymmetricFragmentBundle.putLong(EncryptAsymmetricFragment.ARG_SIGNATURE_KEY_ID,
+            signatureKeyId);
+        mSwitchToMode = PAGER_MODE_ASYMMETRIC;
+
+        /**
+         * Main Actions
+         */
+        if (ACTION_ENCRYPT.equals(action) && textData != null) {
+            // encrypt text based on given extra
+            mMessageFragmentBundle.putString(EncryptMessageFragment.ARG_TEXT, textData);
+            mSwitchToContent = PAGER_CONTENT_MESSAGE;
+        } else if (ACTION_ENCRYPT.equals(action) && uri != null) {
+            // encrypt file based on Uri
+
+            // get file path from uri
+            String path = FileHelper.getPath(this, uri);
+
+            if (path != null) {
+                mFileFragmentBundle.putString(EncryptFileFragment.ARG_FILENAME, path);
+                mSwitchToContent = PAGER_CONTENT_FILE;
+            } else {
+                Log.e(Constants.TAG,
+                        "Direct binary data without actual file in filesystem is not supported " +
+                        "by Intents. Please use the Remote Service API!");
+                Toast.makeText(this, R.string.error_only_files_are_supported, Toast.LENGTH_LONG)
+                        .show();
+                // end activity
+                finish();
+            }
+        } else {
+            Log.e(Constants.TAG,
+                    "Include the extra 'text' or an Uri with setData() in your Intent!");
+        }
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptActivityInterface.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+public interface EncryptActivityInterface {
+
+    public boolean isModeSymmetric();
+
+    public long getSignatureKey();
+    public long[] getEncryptionKeys();
+
+    public String getPassphrase();
+    public String getPassphraseAgain();
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptAsymmetricFragment.java

@@ -0,0 +1,268 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.CheckBox;
+import android.widget.TextView;
+
+import com.beardedhen.androidbootstrap.BootstrapButton;
+
+import org.spongycastle.openpgp.PGPPublicKey;
+import org.spongycastle.openpgp.PGPPublicKeyRing;
+import org.spongycastle.openpgp.PGPSecretKey;
+import org.spongycastle.openpgp.PGPSecretKeyRing;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+
+import java.util.HashMap;
+import java.util.Vector;
+
+public class EncryptAsymmetricFragment extends Fragment {
+    public static final String ARG_SIGNATURE_KEY_ID = "signature_key_id";
+    public static final String ARG_ENCRYPTION_KEY_IDS = "encryption_key_ids";
+
+    public static final int RESULT_CODE_PUBLIC_KEYS = 0x00007001;
+    public static final int RESULT_CODE_SECRET_KEYS = 0x00007002;
+
+    OnAsymmetricKeySelection mKeySelectionListener;
+
+    // view
+    private BootstrapButton mSelectKeysButton;
+    private CheckBox mSign;
+    private TextView mMainUserId;
+    private TextView mMainUserIdRest;
+
+    // model
+    private long mSecretKeyId = Id.key.none;
+    private long mEncryptionKeyIds[] = null;
+
+    // Container Activity must implement this interface
+    public interface OnAsymmetricKeySelection {
+        public void onSigningKeySelected(long signingKeyId);
+
+        public void onEncryptionKeysSelected(long[] encryptionKeyIds);
+    }
+
+    @Override
+    public void onAttach(Activity activity) {
+        super.onAttach(activity);
+        try {
+            mKeySelectionListener = (OnAsymmetricKeySelection) activity;
+        } catch (ClassCastException e) {
+            throw new ClassCastException(activity.toString() + " must implement OnAsymmetricKeySelection");
+        }
+    }
+
+    private void setSignatureKeyId(long signatureKeyId) {
+        mSecretKeyId = signatureKeyId;
+        // update key selection in EncryptActivity
+        mKeySelectionListener.onSigningKeySelected(signatureKeyId);
+        updateView();
+    }
+
+    private void setEncryptionKeyIds(long[] encryptionKeyIds) {
+        mEncryptionKeyIds = encryptionKeyIds;
+        // update key selection in EncryptActivity
+        mKeySelectionListener.onEncryptionKeysSelected(encryptionKeyIds);
+        updateView();
+    }
+
+    /**
+     * Inflate the layout for this fragment
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.encrypt_asymmetric_fragment, container, false);
+
+        mSelectKeysButton = (BootstrapButton) view.findViewById(R.id.btn_selectEncryptKeys);
+        mSign = (CheckBox) view.findViewById(R.id.sign);
+        mMainUserId = (TextView) view.findViewById(R.id.mainUserId);
+        mMainUserIdRest = (TextView) view.findViewById(R.id.mainUserIdRest);
+        mSelectKeysButton.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                selectPublicKeys();
+            }
+        });
+        mSign.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                CheckBox checkBox = (CheckBox) v;
+                if (checkBox.isChecked()) {
+                    selectSecretKey();
+                } else {
+                    setSignatureKeyId(Id.key.none);
+                }
+            }
+        });
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        long signatureKeyId = getArguments().getLong(ARG_SIGNATURE_KEY_ID);
+        long[] encryptionKeyIds = getArguments().getLongArray(ARG_ENCRYPTION_KEY_IDS);
+
+        // preselect keys given by arguments (given by Intent to EncryptActivity)
+        preselectKeys(signatureKeyId, encryptionKeyIds);
+    }
+
+    /**
+     * If an Intent gives a signatureKeyId and/or encryptionKeyIds, preselect those!
+     *
+     * @param preselectedSignatureKeyId
+     * @param preselectedEncryptionKeyIds
+     */
+    private void preselectKeys(long preselectedSignatureKeyId, long[] preselectedEncryptionKeyIds) {
+        if (preselectedSignatureKeyId != 0) {
+            // TODO: don't use bouncy castle objects!
+            PGPSecretKeyRing keyRing = ProviderHelper.getPGPSecretKeyRingWithKeyId(getActivity(),
+                    preselectedSignatureKeyId);
+            PGPSecretKey masterKey;
+            if (keyRing != null) {
+                masterKey = keyRing.getSecretKey();
+                if (masterKey != null) {
+                    Vector<PGPSecretKey> signKeys = PgpKeyHelper.getUsableSigningKeys(keyRing);
+                    if (signKeys.size() > 0) {
+                        setSignatureKeyId(masterKey.getKeyID());
+                    }
+                }
+            }
+        }
+
+        if (preselectedEncryptionKeyIds != null) {
+            Vector<Long> goodIds = new Vector<Long>();
+            for (int i = 0; i < preselectedEncryptionKeyIds.length; ++i) {
+                long id = ProviderHelper.getMasterKeyId(getActivity(),
+                        KeyRings.buildUnifiedKeyRingsFindBySubkeyUri(Long.toString(preselectedEncryptionKeyIds[i]))
+                );
+                // TODO check for available encrypt keys... is this even relevant?
+                goodIds.add(id);
+            }
+            if (goodIds.size() > 0) {
+                long[] keyIds = new long[goodIds.size()];
+                for (int i = 0; i < goodIds.size(); ++i) {
+                    keyIds[i] = goodIds.get(i);
+                }
+                setEncryptionKeyIds(keyIds);
+            }
+        }
+    }
+
+    private void updateView() {
+        if (mEncryptionKeyIds == null || mEncryptionKeyIds.length == 0) {
+            mSelectKeysButton.setText(getString(R.string.select_keys_button_default));
+        } else {
+            mSelectKeysButton.setText(getResources().getQuantityString(
+                    R.plurals.select_keys_button, mEncryptionKeyIds.length,
+                    mEncryptionKeyIds.length));
+        }
+
+        if (mSecretKeyId == Id.key.none) {
+            mSign.setChecked(false);
+            mMainUserId.setText("");
+            mMainUserIdRest.setText("");
+        } else {
+            // See if we can get a user_id from a unified query
+            String userIdResult = (String) ProviderHelper.getUnifiedData(
+                    getActivity(), mSecretKeyId, KeyRings.USER_ID, ProviderHelper.FIELD_TYPE_STRING);
+            String[] userId = PgpKeyHelper.splitUserId(userIdResult);
+            if (userId[0] != null) {
+                mMainUserId.setText(userId[0]);
+            } else {
+                mMainUserId.setText(getResources().getString(R.string.user_id_no_name));
+            }
+            if (userId[1] != null) {
+                mMainUserIdRest.setText(userId[1]);
+            } else {
+                mMainUserIdRest.setText("");
+            }
+            mSign.setChecked(true);
+        }
+    }
+
+    private void selectPublicKeys() {
+        Intent intent = new Intent(getActivity(), SelectPublicKeyActivity.class);
+        Vector<Long> keyIds = new Vector<Long>();
+        if (mSecretKeyId != 0) {
+            keyIds.add(mSecretKeyId);
+        }
+        if (mEncryptionKeyIds != null && mEncryptionKeyIds.length > 0) {
+            for (int i = 0; i < mEncryptionKeyIds.length; ++i) {
+                keyIds.add(mEncryptionKeyIds[i]);
+            }
+        }
+        long[] initialKeyIds = null;
+        if (keyIds.size() > 0) {
+            initialKeyIds = new long[keyIds.size()];
+            for (int i = 0; i < keyIds.size(); ++i) {
+                initialKeyIds[i] = keyIds.get(i);
+            }
+        }
+        intent.putExtra(SelectPublicKeyActivity.EXTRA_SELECTED_MASTER_KEY_IDS, initialKeyIds);
+        startActivityForResult(intent, Id.request.public_keys);
+    }
+
+    private void selectSecretKey() {
+        Intent intent = new Intent(getActivity(), SelectSecretKeyActivity.class);
+        startActivityForResult(intent, Id.request.secret_keys);
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode) {
+            case RESULT_CODE_PUBLIC_KEYS: {
+                if (resultCode == Activity.RESULT_OK) {
+                    Bundle bundle = data.getExtras();
+                    setEncryptionKeyIds(bundle
+                            .getLongArray(SelectPublicKeyActivity.RESULT_EXTRA_MASTER_KEY_IDS));
+                }
+                break;
+            }
+
+            case RESULT_CODE_SECRET_KEYS: {
+                if (resultCode == Activity.RESULT_OK) {
+                    Uri uriMasterKey = data.getData();
+                    setSignatureKeyId(Long.valueOf(uriMasterKey.getLastPathSegment()));
+                } else {
+                    setSignatureKeyId(Id.key.none);
+                }
+                break;
+            }
+
+            default: {
+                super.onActivityResult(requestCode, resultCode, data);
+
+                break;
+            }
+        }
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptFileFragment.java

@@ -0,0 +1,380 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.Activity;
+import android.app.ProgressDialog;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.os.Messenger;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.CheckBox;
+import android.widget.EditText;
+import android.widget.Spinner;
+
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import com.devspark.appmsg.AppMsg;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.FileHelper;
+import org.sufficientlysecure.keychain.helper.Preferences;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.PassphraseCacheService;
+import org.sufficientlysecure.keychain.ui.dialog.DeleteFileDialogFragment;
+import org.sufficientlysecure.keychain.ui.dialog.FileDialogFragment;
+import org.sufficientlysecure.keychain.ui.dialog.PassphraseDialogFragment;
+import org.sufficientlysecure.keychain.util.Choice;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.io.File;
+
+public class EncryptFileFragment extends Fragment {
+    public static final String ARG_FILENAME = "filename";
+    public static final String ARG_ASCII_ARMOR = "ascii_armor";
+
+    private static final int RESULT_CODE_FILE = 0x00007003;
+
+    private EncryptActivityInterface mEncryptInterface;
+
+    // view
+    private CheckBox mAsciiArmor = null;
+    private Spinner mFileCompression = null;
+    private EditText mFilename = null;
+    private CheckBox mDeleteAfter = null;
+    private CheckBox mShareAfter = null;
+    private BootstrapButton mBrowse = null;
+    private BootstrapButton mEncryptFile;
+
+    private FileDialogFragment mFileDialog;
+
+    // model
+    private String mInputFilename = null;
+    private String mOutputFilename = null;
+
+    @Override
+    public void onAttach(Activity activity) {
+        super.onAttach(activity);
+        try {
+            mEncryptInterface = (EncryptActivityInterface) activity;
+        } catch (ClassCastException e) {
+            throw new ClassCastException(activity.toString() + " must implement EncryptActivityInterface");
+        }
+    }
+
+    /**
+     * Inflate the layout for this fragment
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.encrypt_file_fragment, container, false);
+
+        mEncryptFile = (BootstrapButton) view.findViewById(R.id.action_encrypt_file);
+        mEncryptFile.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                encryptClicked();
+            }
+        });
+
+        mFilename = (EditText) view.findViewById(R.id.filename);
+        mBrowse = (BootstrapButton) view.findViewById(R.id.btn_browse);
+        mBrowse.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                FileHelper.openFile(EncryptFileFragment.this, mFilename.getText().toString(), "*/*",
+                        Id.request.filename);
+            }
+        });
+
+        mFileCompression = (Spinner) view.findViewById(R.id.fileCompression);
+        Choice[] choices = new Choice[] {
+                new Choice(Id.choice.compression.none, getString(R.string.choice_none) + " ("
+                        + getString(R.string.compression_fast) + ")"),
+                new Choice(Id.choice.compression.zip, "ZIP ("
+                        + getString(R.string.compression_fast) + ")"),
+                new Choice(Id.choice.compression.zlib, "ZLIB ("
+                        + getString(R.string.compression_fast) + ")"),
+                new Choice(Id.choice.compression.bzip2, "BZIP2 ("
+                        + getString(R.string.compression_very_slow) + ")"),
+        };
+        ArrayAdapter<Choice> adapter = new ArrayAdapter<Choice>(getActivity(),
+                android.R.layout.simple_spinner_item, choices);
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        mFileCompression.setAdapter(adapter);
+
+        int defaultFileCompression = Preferences.getPreferences(getActivity()).getDefaultFileCompression();
+        for (int i = 0; i < choices.length; ++i) {
+            if (choices[i].getId() == defaultFileCompression) {
+                mFileCompression.setSelection(i);
+                break;
+            }
+        }
+
+        mDeleteAfter = (CheckBox) view.findViewById(R.id.deleteAfterEncryption);
+        mShareAfter = (CheckBox) view.findViewById(R.id.shareAfterEncryption);
+
+        mAsciiArmor = (CheckBox) view.findViewById(R.id.asciiArmor);
+        mAsciiArmor.setChecked(Preferences.getPreferences(getActivity()).getDefaultAsciiArmor());
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        String filename = getArguments().getString(ARG_FILENAME);
+        if (filename != null) {
+            mFilename.setText(filename);
+        }
+        boolean asciiArmor = getArguments().getBoolean(ARG_ASCII_ARMOR);
+        if (asciiArmor) {
+            mAsciiArmor.setChecked(asciiArmor);
+        }
+    }
+
+    /**
+     * Guess output filename based on input path
+     *
+     * @param path
+     * @return Suggestion for output filename
+     */
+    private String guessOutputFilename(String path) {
+        // output in the same directory but with additional ending
+        File file = new File(path);
+        String ending = (mAsciiArmor.isChecked() ? ".asc" : ".gpg");
+        String outputFilename = file.getParent() + File.separator + file.getName() + ending;
+
+        return outputFilename;
+    }
+
+    private void showOutputFileDialog() {
+        // Message is received after file is selected
+        Handler returnHandler = new Handler() {
+            @Override
+            public void handleMessage(Message message) {
+                if (message.what == FileDialogFragment.MESSAGE_OKAY) {
+                    Bundle data = message.getData();
+                    mOutputFilename = data.getString(FileDialogFragment.MESSAGE_DATA_FILENAME);
+                    encryptStart();
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(returnHandler);
+
+        mFileDialog = FileDialogFragment.newInstance(messenger,
+                getString(R.string.title_encrypt_to_file),
+                getString(R.string.specify_file_to_encrypt_to), mOutputFilename, null);
+
+        mFileDialog.show(getActivity().getSupportFragmentManager(), "fileDialog");
+    }
+
+    private void encryptClicked() {
+        String currentFilename = mFilename.getText().toString();
+        if (mInputFilename == null || !mInputFilename.equals(currentFilename)) {
+            mInputFilename = mFilename.getText().toString();
+        }
+
+        mOutputFilename = guessOutputFilename(mInputFilename);
+
+        if (mInputFilename.equals("")) {
+            AppMsg.makeText(getActivity(), R.string.no_file_selected, AppMsg.STYLE_ALERT).show();
+            return;
+        }
+
+        if (!mInputFilename.startsWith("content")) {
+            File file = new File(mInputFilename);
+            if (!file.exists() || !file.isFile()) {
+                AppMsg.makeText(
+                        getActivity(),
+                        getString(R.string.error_message,
+                                getString(R.string.error_file_not_found)), AppMsg.STYLE_ALERT)
+                        .show();
+                return;
+            }
+        }
+
+        if (mEncryptInterface.isModeSymmetric()) {
+            // symmetric encryption
+
+            boolean gotPassphrase = (mEncryptInterface.getPassphrase() != null
+                    && mEncryptInterface.getPassphrase().length() != 0);
+            if (!gotPassphrase) {
+                AppMsg.makeText(getActivity(), R.string.passphrase_must_not_be_empty, AppMsg.STYLE_ALERT)
+                        .show();
+                return;
+            }
+
+            if (!mEncryptInterface.getPassphrase().equals(mEncryptInterface.getPassphraseAgain())) {
+                AppMsg.makeText(getActivity(), R.string.passphrases_do_not_match, AppMsg.STYLE_ALERT).show();
+                return;
+            }
+        } else {
+            // asymmetric encryption
+
+            boolean gotEncryptionKeys = (mEncryptInterface.getEncryptionKeys() != null
+                    && mEncryptInterface.getEncryptionKeys().length > 0);
+
+            if (!gotEncryptionKeys) {
+                AppMsg.makeText(getActivity(), R.string.select_encryption_key, AppMsg.STYLE_ALERT).show();
+                return;
+            }
+
+            if (!gotEncryptionKeys && mEncryptInterface.getSignatureKey() == 0) {
+                AppMsg.makeText(getActivity(), R.string.select_encryption_or_signature_key,
+                        AppMsg.STYLE_ALERT).show();
+                return;
+            }
+
+            if (mEncryptInterface.getSignatureKey() != 0 &&
+                PassphraseCacheService.getCachedPassphrase(getActivity(),
+                    mEncryptInterface.getSignatureKey()) == null) {
+                PassphraseDialogFragment.show(getActivity(), mEncryptInterface.getSignatureKey(),
+                    new Handler() {
+                        @Override
+                        public void handleMessage(Message message) {
+                            if (message.what == PassphraseDialogFragment.MESSAGE_OKAY) {
+                                showOutputFileDialog();
+                            }
+                        }
+                    });
+
+                return;
+            }
+        }
+
+        showOutputFileDialog();
+    }
+
+    private void encryptStart() {
+        // Send all information needed to service to edit key in other thread
+        Intent intent = new Intent(getActivity(), KeychainIntentService.class);
+
+        intent.setAction(KeychainIntentService.ACTION_ENCRYPT_SIGN);
+
+        // fill values for this action
+        Bundle data = new Bundle();
+
+        data.putInt(KeychainIntentService.TARGET, KeychainIntentService.TARGET_URI);
+
+        if (mEncryptInterface.isModeSymmetric()) {
+            Log.d(Constants.TAG, "Symmetric encryption enabled!");
+            String passphrase = mEncryptInterface.getPassphrase();
+            if (passphrase.length() == 0) {
+                passphrase = null;
+            }
+            data.putString(KeychainIntentService.ENCRYPT_SYMMETRIC_PASSPHRASE, passphrase);
+        } else {
+            data.putLong(KeychainIntentService.ENCRYPT_SIGNATURE_KEY_ID,
+                mEncryptInterface.getSignatureKey());
+            data.putLongArray(KeychainIntentService.ENCRYPT_ENCRYPTION_KEYS_IDS,
+                mEncryptInterface.getEncryptionKeys());
+        }
+
+        Log.d(Constants.TAG, "mInputFilename=" + mInputFilename + ", mOutputFilename="
+                + mOutputFilename);
+
+        data.putString(KeychainIntentService.ENCRYPT_INPUT_FILE, mInputFilename);
+        data.putString(KeychainIntentService.ENCRYPT_OUTPUT_FILE, mOutputFilename);
+
+        boolean useAsciiArmor = mAsciiArmor.isChecked();
+        data.putBoolean(KeychainIntentService.ENCRYPT_USE_ASCII_ARMOR, useAsciiArmor);
+
+        int compressionId = ((Choice) mFileCompression.getSelectedItem()).getId();
+        data.putInt(KeychainIntentService.ENCRYPT_COMPRESSION_ID, compressionId);
+//        data.putBoolean(KeychainIntentService.ENCRYPT_GENERATE_SIGNATURE, mGenerateSignature);
+
+        intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+        // Message is received after encrypting is done in KeychainIntentService
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity(),
+                getString(R.string.progress_encrypting), ProgressDialog.STYLE_HORIZONTAL) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+                    AppMsg.makeText(getActivity(), R.string.encryption_successful,
+                            AppMsg.STYLE_INFO).show();
+
+                    if (mDeleteAfter.isChecked()) {
+                        // Create and show dialog to delete original file
+                        DeleteFileDialogFragment deleteFileDialog = DeleteFileDialogFragment
+                                .newInstance(mInputFilename);
+                        deleteFileDialog.show(getActivity().getSupportFragmentManager(), "deleteDialog");
+                    }
+
+                    if (mShareAfter.isChecked()) {
+                        // Share encrypted file
+                        Intent sendFileIntent = new Intent(Intent.ACTION_SEND);
+                        sendFileIntent.setType("*/*");
+                        sendFileIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse(mOutputFilename));
+                        startActivity(Intent.createChooser(sendFileIntent,
+                                getString(R.string.title_send_file)));
+                    }
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(saveHandler);
+        intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+        // show progress dialog
+        saveHandler.showProgressDialog(getActivity());
+
+        // start service with intent
+        getActivity().startService(intent);
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode) {
+            case RESULT_CODE_FILE: {
+                if (resultCode == Activity.RESULT_OK && data != null) {
+                    try {
+                        String path = FileHelper.getPath(getActivity(), data.getData());
+                        Log.d(Constants.TAG, "path=" + path);
+
+                        mFilename.setText(path);
+                    } catch (NullPointerException e) {
+                        Log.e(Constants.TAG, "Nullpointer while retrieving path!");
+                    }
+                }
+                return;
+            }
+
+            default: {
+                super.onActivityResult(requestCode, resultCode, data);
+
+                break;
+            }
+        }
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptMessageFragment.java

@@ -0,0 +1,259 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.Activity;
+import android.app.ProgressDialog;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.os.Messenger;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.EditText;
+
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import com.devspark.appmsg.AppMsg;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.compatibility.ClipboardReflection;
+import org.sufficientlysecure.keychain.helper.Preferences;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.PassphraseCacheService;
+import org.sufficientlysecure.keychain.ui.dialog.PassphraseDialogFragment;
+import org.sufficientlysecure.keychain.util.Log;
+
+public class EncryptMessageFragment extends Fragment {
+    public static final String ARG_TEXT = "text";
+
+    private EditText mMessage = null;
+    private BootstrapButton mEncryptShare;
+    private BootstrapButton mEncryptClipboard;
+
+    private EncryptActivityInterface mEncryptInterface;
+
+
+    @Override
+    public void onAttach(Activity activity) {
+        super.onAttach(activity);
+        try {
+            mEncryptInterface = (EncryptActivityInterface) activity;
+        } catch (ClassCastException e) {
+            throw new ClassCastException(activity.toString() + " must implement EncryptActivityInterface");
+        }
+    }
+
+    /**
+     * Inflate the layout for this fragment
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.encrypt_message_fragment, container, false);
+
+        mMessage = (EditText) view.findViewById(R.id.message);
+        mEncryptClipboard = (BootstrapButton) view.findViewById(R.id.action_encrypt_clipboard);
+        mEncryptShare = (BootstrapButton) view.findViewById(R.id.action_encrypt_share);
+        mEncryptClipboard.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                encryptClicked(true);
+            }
+        });
+        mEncryptShare.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                encryptClicked(false);
+            }
+        });
+
+        return view;
+    }
+
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        String text = getArguments().getString(ARG_TEXT);
+        if (text != null) {
+            mMessage.setText(text);
+        }
+    }
+
+    /**
+     * Fixes bad message characters for gmail
+     *
+     * @param message
+     * @return
+     */
+    private String fixBadCharactersForGmail(String message) {
+        // fix the message a bit, trailing spaces and newlines break stuff,
+        // because GMail sends as HTML and such things fuck up the
+        // signature,
+        // TODO: things like "<" and ">" also fuck up the signature
+        message = message.replaceAll(" +\n", "\n");
+        message = message.replaceAll("\n\n+", "\n\n");
+        message = message.replaceFirst("^\n+", "");
+        // make sure there'll be exactly one newline at the end
+        message = message.replaceFirst("\n*$", "\n");
+
+        return message;
+    }
+
+    private void encryptClicked(final boolean toClipboard) {
+        if (mEncryptInterface.isModeSymmetric()) {
+            // symmetric encryption
+
+            boolean gotPassphrase = (mEncryptInterface.getPassphrase() != null
+                    && mEncryptInterface.getPassphrase().length() != 0);
+            if (!gotPassphrase) {
+                AppMsg.makeText(getActivity(), R.string.passphrase_must_not_be_empty, AppMsg.STYLE_ALERT)
+                        .show();
+                return;
+            }
+
+            if (!mEncryptInterface.getPassphrase().equals(mEncryptInterface.getPassphraseAgain())) {
+                AppMsg.makeText(getActivity(), R.string.passphrases_do_not_match, AppMsg.STYLE_ALERT).show();
+                return;
+            }
+
+        } else {
+            // asymmetric encryption
+
+            boolean gotEncryptionKeys = (mEncryptInterface.getEncryptionKeys() != null
+                    && mEncryptInterface.getEncryptionKeys().length > 0);
+
+            if (!gotEncryptionKeys && mEncryptInterface.getSignatureKey() == 0) {
+                AppMsg.makeText(getActivity(), R.string.select_encryption_or_signature_key,
+                        AppMsg.STYLE_ALERT).show();
+                return;
+            }
+
+            if (mEncryptInterface.getSignatureKey() != 0 &&
+                PassphraseCacheService.getCachedPassphrase(getActivity(),
+                    mEncryptInterface.getSignatureKey()) == null) {
+                PassphraseDialogFragment.show(getActivity(), mEncryptInterface.getSignatureKey(),
+                    new Handler() {
+                        @Override
+                        public void handleMessage(Message message) {
+                            if (message.what == PassphraseDialogFragment.MESSAGE_OKAY) {
+                                encryptStart(toClipboard);
+                            }
+                        }
+                    });
+
+                return;
+            }
+        }
+
+        encryptStart(toClipboard);
+    }
+
+    private void encryptStart(final boolean toClipboard) {
+        // Send all information needed to service to edit key in other thread
+        Intent intent = new Intent(getActivity(), KeychainIntentService.class);
+
+        intent.setAction(KeychainIntentService.ACTION_ENCRYPT_SIGN);
+
+        // fill values for this action
+        Bundle data = new Bundle();
+
+        data.putInt(KeychainIntentService.TARGET, KeychainIntentService.TARGET_BYTES);
+
+        String message = mMessage.getText().toString();
+
+        if (mEncryptInterface.isModeSymmetric()) {
+            Log.d(Constants.TAG, "Symmetric encryption enabled!");
+            String passphrase = mEncryptInterface.getPassphrase();
+            if (passphrase.length() == 0) {
+                passphrase = null;
+            }
+            data.putString(KeychainIntentService.ENCRYPT_SYMMETRIC_PASSPHRASE, passphrase);
+        } else {
+            data.putLong(KeychainIntentService.ENCRYPT_SIGNATURE_KEY_ID,
+                mEncryptInterface.getSignatureKey());
+            data.putLongArray(KeychainIntentService.ENCRYPT_ENCRYPTION_KEYS_IDS,
+                mEncryptInterface.getEncryptionKeys());
+
+            boolean signOnly = (mEncryptInterface.getEncryptionKeys() == null
+                    || mEncryptInterface.getEncryptionKeys().length == 0);
+            if (signOnly) {
+                message = fixBadCharactersForGmail(message);
+            }
+        }
+
+        data.putByteArray(KeychainIntentService.ENCRYPT_MESSAGE_BYTES, message.getBytes());
+
+        data.putBoolean(KeychainIntentService.ENCRYPT_USE_ASCII_ARMOR, true);
+
+        int compressionId = Preferences.getPreferences(getActivity()).getDefaultMessageCompression();
+        data.putInt(KeychainIntentService.ENCRYPT_COMPRESSION_ID, compressionId);
+//        data.putBoolean(KeychainIntentService.ENCRYPT_GENERATE_SIGNATURE, mGenerateSignature);
+
+        intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+        // Message is received after encrypting is done in KeychainIntentService
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity(),
+                getString(R.string.progress_encrypting), ProgressDialog.STYLE_HORIZONTAL) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+                    // get returned data bundle
+                    Bundle data = message.getData();
+
+                    String output = new String(data.getByteArray(KeychainIntentService.RESULT_BYTES));
+                    Log.d(Constants.TAG, "output: " + output);
+
+                    if (toClipboard) {
+                        ClipboardReflection.copyToClipboard(getActivity(), output);
+                        AppMsg.makeText(getActivity(),
+                                R.string.encryption_to_clipboard_successful, AppMsg.STYLE_INFO)
+                                .show();
+                    } else {
+                        Intent sendIntent = new Intent(Intent.ACTION_SEND);
+
+                        // Type is set to text/plain so that encrypted messages can
+                        // be sent with Whatsapp, Hangouts, SMS etc...
+                        sendIntent.setType("text/plain");
+
+                        sendIntent.putExtra(Intent.EXTRA_TEXT, output);
+                        startActivity(Intent.createChooser(sendIntent,
+                                getString(R.string.title_send_email)));
+                    }
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(saveHandler);
+        intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+        // show progress dialog
+        saveHandler.showProgressDialog(getActivity());
+
+        // start service with intent
+        getActivity().startService(intent);
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptSymmetricFragment.java

@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.EditText;
+
+import org.sufficientlysecure.keychain.R;
+
+public class EncryptSymmetricFragment extends Fragment {
+
+    OnSymmetricKeySelection mPassphraseUpdateListener;
+
+    private EditText mPassphrase;
+    private EditText mPassphraseAgain;
+
+    // Container Activity must implement this interface
+    public interface OnSymmetricKeySelection {
+        public void onPassphraseUpdate(String passphrase);
+
+        public void onPassphraseAgainUpdate(String passphrase);
+    }
+
+    @Override
+    public void onAttach(Activity activity) {
+        super.onAttach(activity);
+        try {
+            mPassphraseUpdateListener = (OnSymmetricKeySelection) activity;
+        } catch (ClassCastException e) {
+            throw new ClassCastException(activity.toString() + " must implement OnSymmetricKeySelection");
+        }
+    }
+
+    /**
+     * Inflate the layout for this fragment
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.encrypt_symmetric_fragment, container, false);
+
+        mPassphrase = (EditText) view.findViewById(R.id.passphrase);
+        mPassphraseAgain = (EditText) view.findViewById(R.id.passphraseAgain);
+        mPassphrase.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                // update passphrase in EncryptActivity
+                mPassphraseUpdateListener.onPassphraseUpdate(s.toString());
+            }
+        });
+        mPassphraseAgain.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                // update passphrase in EncryptActivity
+                mPassphraseUpdateListener.onPassphraseAgainUpdate(s.toString());
+            }
+        });
+
+        return view;
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpAboutFragment.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+import org.sufficientlysecure.htmltextview.HtmlTextView;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.util.Log;
+
+
+public class HelpAboutFragment extends Fragment {
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.help_about_fragment, container, false);
+
+        TextView versionText = (TextView) view.findViewById(R.id.help_about_version);
+        versionText.setText(getString(R.string.help_about_version) + " " + getVersion());
+
+        HtmlTextView aboutTextView = (HtmlTextView) view.findViewById(R.id.help_about_text);
+
+        // load html from raw resource (Parsing handled by HtmlTextView library)
+        aboutTextView.setHtmlFromRawResource(getActivity(), R.raw.help_about);
+
+        // no flickering when clicking textview for Android < 4
+        aboutTextView.setTextColor(getResources().getColor(android.R.color.black));
+
+        return view;
+    }
+
+    /**
+     * Get the current package version.
+     *
+     * @return The current version.
+     */
+    private String getVersion() {
+        String result = "";
+        try {
+            PackageManager manager = getActivity().getPackageManager();
+            PackageInfo info = manager.getPackageInfo(getActivity().getPackageName(), 0);
+
+            result = String.format("%s (%s)", info.versionName, info.versionCode);
+        } catch (NameNotFoundException e) {
+            Log.w(Constants.TAG, "Unable to get application version: " + e.getMessage());
+            result = "Unable to get application version.";
+        }
+
+        return result;
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpActivity.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.v4.view.ViewPager;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.ActionBarActivity;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.ui.adapter.TabsAdapter;
+
+public class HelpActivity extends ActionBarActivity {
+    public static final String EXTRA_SELECTED_TAB = "selected_tab";
+
+    ViewPager mViewPager;
+    TabsAdapter mTabsAdapter;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.help_activity);
+
+        mViewPager = (ViewPager) findViewById(R.id.pager);
+
+        final ActionBar actionBar = getSupportActionBar();
+        actionBar.setDisplayShowTitleEnabled(true);
+        actionBar.setDisplayHomeAsUpEnabled(false);
+        actionBar.setHomeButtonEnabled(false);
+        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
+
+        mTabsAdapter = new TabsAdapter(this, mViewPager);
+
+        int selectedTab = 0;
+        Intent intent = getIntent();
+        if (intent.getExtras() != null && intent.getExtras().containsKey(EXTRA_SELECTED_TAB)) {
+            selectedTab = intent.getExtras().getInt(EXTRA_SELECTED_TAB);
+        }
+
+        Bundle startBundle = new Bundle();
+        startBundle.putInt(HelpHtmlFragment.ARG_HTML_FILE, R.raw.help_start);
+        mTabsAdapter.addTab(actionBar.newTab().setText(getString(R.string.help_tab_start)),
+                HelpHtmlFragment.class, startBundle, (selectedTab == 0));
+
+        Bundle faqBundle = new Bundle();
+        faqBundle.putInt(HelpHtmlFragment.ARG_HTML_FILE, R.raw.help_faq);
+        mTabsAdapter.addTab(actionBar.newTab().setText(getString(R.string.help_tab_faq)),
+                HelpHtmlFragment.class, faqBundle, (selectedTab == 1));
+
+        Bundle nfcBundle = new Bundle();
+        nfcBundle.putInt(HelpHtmlFragment.ARG_HTML_FILE, R.raw.help_nfc_beam);
+        mTabsAdapter.addTab(actionBar.newTab().setText(getString(R.string.help_tab_nfc_beam)),
+                HelpHtmlFragment.class, nfcBundle, (selectedTab == 2));
+
+        Bundle changelogBundle = new Bundle();
+        changelogBundle.putInt(HelpHtmlFragment.ARG_HTML_FILE, R.raw.help_changelog);
+        mTabsAdapter.addTab(actionBar.newTab().setText(getString(R.string.help_tab_changelog)),
+                HelpHtmlFragment.class, changelogBundle, (selectedTab == 3));
+
+        mTabsAdapter.addTab(actionBar.newTab().setText(getString(R.string.help_tab_about)),
+                HelpAboutFragment.class, null, (selectedTab == 4));
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpHtmlFragment.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.util.TypedValue;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ScrollView;
+import org.sufficientlysecure.htmltextview.HtmlTextView;
+
+public class HelpHtmlFragment extends Fragment {
+    private Activity mActivity;
+
+    private int mHtmlFile;
+
+    public static final String ARG_HTML_FILE = "htmlFile";
+
+    /**
+     * Create a new instance of HelpHtmlFragment, providing "htmlFile" as an argument.
+     */
+    static HelpHtmlFragment newInstance(int htmlFile) {
+        HelpHtmlFragment f = new HelpHtmlFragment();
+
+        // Supply html raw file input as an argument.
+        Bundle args = new Bundle();
+        args.putInt(ARG_HTML_FILE, htmlFile);
+        f.setArguments(args);
+
+        return f;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        mActivity = getActivity();
+
+        mHtmlFile = getArguments().getInt(ARG_HTML_FILE);
+
+        ScrollView scroller = new ScrollView(mActivity);
+        HtmlTextView text = new HtmlTextView(mActivity);
+
+        // padding
+        int padding = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 16, mActivity
+                .getResources().getDisplayMetrics());
+        text.setPadding(padding, padding, padding, 0);
+
+        scroller.addView(text);
+
+        // load html from raw resource (Parsing handled by HtmlTextView library)
+        text.setHtmlFromRawResource(getActivity(), mHtmlFile);
+
+        // no flickering when clicking textview for Android < 4
+        text.setTextColor(getResources().getColor(android.R.color.black));
+
+        return scroller;
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysActivity.java

@@ -0,0 +1,489 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ * Copyright (C) 2011 Senecaso
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.annotation.SuppressLint;
+import android.app.Activity;
+import android.app.ProgressDialog;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.nfc.NdefMessage;
+import android.nfc.NfcAdapter;
+import android.os.Bundle;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.Parcelable;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentTransaction;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.ActionBarActivity;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.ArrayAdapter;
+
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import com.devspark.appmsg.AppMsg;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.ActionBarHelper;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.ui.adapter.ImportKeysListEntry;
+import org.sufficientlysecure.keychain.ui.dialog.BadImportKeyDialogFragment;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.util.ArrayList;
+import java.util.Locale;
+
+public class ImportKeysActivity extends ActionBarActivity implements ActionBar.OnNavigationListener {
+    public static final String ACTION_IMPORT_KEY = Constants.INTENT_PREFIX + "IMPORT_KEY";
+    public static final String ACTION_IMPORT_KEY_FROM_QR_CODE = Constants.INTENT_PREFIX
+            + "IMPORT_KEY_FROM_QR_CODE";
+    public static final String ACTION_IMPORT_KEY_FROM_KEYSERVER = Constants.INTENT_PREFIX
+            + "IMPORT_KEY_FROM_KEYSERVER";
+    public static final String ACTION_IMPORT_KEY_FROM_KEYSERVER_AND_RETURN = Constants.INTENT_PREFIX
+            + "IMPORT_KEY_FROM_KEY_SERVER_AND_RETURN";
+
+    // Actions for internal use only:
+    public static final String ACTION_IMPORT_KEY_FROM_FILE = Constants.INTENT_PREFIX
+            + "IMPORT_KEY_FROM_FILE";
+    public static final String ACTION_IMPORT_KEY_FROM_NFC = Constants.INTENT_PREFIX
+            + "IMPORT_KEY_FROM_NFC";
+
+    // only used by ACTION_IMPORT_KEY
+    public static final String EXTRA_KEY_BYTES = "key_bytes";
+
+    // only used by ACTION_IMPORT_KEY_FROM_KEYSERVER
+    public static final String EXTRA_QUERY = "query";
+    public static final String EXTRA_KEY_ID = "key_id";
+    public static final String EXTRA_FINGERPRINT = "fingerprint";
+
+    // only used by ACTION_IMPORT_KEY_FROM_KEYSERVER_AND_RETURN when used from OpenPgpService
+    public static final String EXTRA_PENDING_INTENT_DATA = "data";
+    private Intent mPendingIntentData;
+
+    // view
+    private ImportKeysListFragment mListFragment;
+    private String[] mNavigationStrings;
+    private Fragment mCurrentFragment;
+    private BootstrapButton mImportButton;
+
+    private static final Class[] NAVIGATION_CLASSES = new Class[]{
+            ImportKeysServerFragment.class,
+            ImportKeysFileFragment.class,
+            ImportKeysQrCodeFragment.class,
+            ImportKeysClipboardFragment.class,
+            ImportKeysNFCFragment.class
+    };
+
+    private int mCurrentNavPosition = -1;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.import_keys_activity);
+
+        mImportButton = (BootstrapButton) findViewById(R.id.import_import);
+        mImportButton.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                importKeys();
+            }
+        });
+
+        mNavigationStrings = getResources().getStringArray(R.array.import_action_list);
+
+        if (ACTION_IMPORT_KEY_FROM_KEYSERVER_AND_RETURN.equals(getIntent().getAction())) {
+            setTitle(R.string.nav_import);
+        } else {
+            ActionBarHelper.setBackButton(this);
+            getSupportActionBar().setDisplayShowTitleEnabled(false);
+
+            // set drop down navigation
+            Context context = getSupportActionBar().getThemedContext();
+            ArrayAdapter<CharSequence> navigationAdapter = ArrayAdapter.createFromResource(context,
+                    R.array.import_action_list, android.R.layout.simple_spinner_dropdown_item);
+            getSupportActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
+            getSupportActionBar().setListNavigationCallbacks(navigationAdapter, this);
+        }
+
+        handleActions(savedInstanceState, getIntent());
+    }
+
+    protected void handleActions(Bundle savedInstanceState, Intent intent) {
+        String action = intent.getAction();
+        Bundle extras = intent.getExtras();
+        Uri dataUri = intent.getData();
+        String scheme = intent.getScheme();
+
+        if (extras == null) {
+            extras = new Bundle();
+        }
+
+        if (Intent.ACTION_VIEW.equals(action)) {
+            // Android's Action when opening file associated to Keychain (see AndroidManifest.xml)
+            // override action to delegate it to Keychain's ACTION_IMPORT_KEY
+            action = ACTION_IMPORT_KEY;
+        }
+
+        if (scheme != null && scheme.toLowerCase(Locale.ENGLISH).equals(Constants.FINGERPRINT_SCHEME)) {
+            /* Scanning a fingerprint directly with Barcode Scanner */
+            loadFromFingerprintUri(savedInstanceState, dataUri);
+        } else if (ACTION_IMPORT_KEY.equals(action)) {
+            /* Keychain's own Actions */
+
+            // display file fragment
+            loadNavFragment(1, null);
+
+            if (dataUri != null) {
+                // action: directly load data
+                startListFragment(savedInstanceState, null, dataUri, null);
+            } else if (extras.containsKey(EXTRA_KEY_BYTES)) {
+                byte[] importData = intent.getByteArrayExtra(EXTRA_KEY_BYTES);
+
+                // action: directly load data
+                startListFragment(savedInstanceState, importData, null, null);
+            }
+        } else if (ACTION_IMPORT_KEY_FROM_KEYSERVER.equals(action)
+                || ACTION_IMPORT_KEY_FROM_KEYSERVER_AND_RETURN.equals(action)) {
+
+            // only used for OpenPgpService
+            if (extras.containsKey(EXTRA_PENDING_INTENT_DATA)) {
+                mPendingIntentData = extras.getParcelable(EXTRA_PENDING_INTENT_DATA);
+            }
+            if (extras.containsKey(EXTRA_QUERY) || extras.containsKey(EXTRA_KEY_ID)) {
+                /* simple search based on query or key id */
+
+                String query = null;
+                if (extras.containsKey(EXTRA_QUERY)) {
+                    query = extras.getString(EXTRA_QUERY);
+                } else if (extras.containsKey(EXTRA_KEY_ID)) {
+                    long keyId = intent.getLongExtra(EXTRA_KEY_ID, 0);
+                    if (keyId != 0) {
+                        query = PgpKeyHelper.convertKeyIdToHex(keyId);
+                    }
+                }
+
+                if (query != null && query.length() > 0) {
+                    // display keyserver fragment with query
+                    Bundle args = new Bundle();
+                    args.putString(ImportKeysServerFragment.ARG_QUERY, query);
+                    loadNavFragment(0, args);
+
+                    // action: search immediately
+                    startListFragment(savedInstanceState, null, null, query);
+                } else {
+                    Log.e(Constants.TAG, "Query is empty!");
+                    return;
+                }
+            } else if (extras.containsKey(EXTRA_FINGERPRINT)) {
+                /*
+                 * search based on fingerprint, here we can enforce a check in the end
+                 * if the right key has been downloaded
+                 */
+
+                String fingerprint = intent.getStringExtra(EXTRA_FINGERPRINT);
+                loadFromFingerprint(savedInstanceState, fingerprint);
+            } else {
+                Log.e(Constants.TAG,
+                        "IMPORT_KEY_FROM_KEYSERVER action needs to contain the 'query', 'key_id', or " +
+                                "'fingerprint' extra!");
+                return;
+            }
+        } else if (ACTION_IMPORT_KEY_FROM_FILE.equals(action)) {
+
+            // NOTE: this only displays the appropriate fragment, no actions are taken
+            loadNavFragment(1, null);
+
+            // no immediate actions!
+            startListFragment(savedInstanceState, null, null, null);
+        } else if (ACTION_IMPORT_KEY_FROM_QR_CODE.equals(action)) {
+            // also exposed in AndroidManifest
+
+            // NOTE: this only displays the appropriate fragment, no actions are taken
+            loadNavFragment(2, null);
+
+            // no immediate actions!
+            startListFragment(savedInstanceState, null, null, null);
+        } else if (ACTION_IMPORT_KEY_FROM_NFC.equals(action)) {
+
+            // NOTE: this only displays the appropriate fragment, no actions are taken
+            loadNavFragment(3, null);
+
+            // no immediate actions!
+            startListFragment(savedInstanceState, null, null, null);
+        } else {
+            startListFragment(savedInstanceState, null, null, null);
+        }
+    }
+
+    private void startListFragment(Bundle savedInstanceState, byte[] bytes, Uri dataUri, String serverQuery) {
+        // However, if we're being restored from a previous state,
+        // then we don't need to do anything and should return or else
+        // we could end up with overlapping fragments.
+        if (savedInstanceState != null) {
+            return;
+        }
+
+        // Create an instance of the fragment
+        mListFragment = ImportKeysListFragment.newInstance(bytes, dataUri, serverQuery);
+
+        // Add the fragment to the 'fragment_container' FrameLayout
+        // NOTE: We use commitAllowingStateLoss() to prevent weird crashes!
+        getSupportFragmentManager().beginTransaction()
+                .replace(R.id.import_keys_list_container, mListFragment)
+                .commitAllowingStateLoss();
+        // do it immediately!
+        getSupportFragmentManager().executePendingTransactions();
+    }
+
+    /**
+     * "Basically, when using a list navigation, onNavigationItemSelected() is automatically
+     * called when your activity is created/re-created, whether you like it or not. To prevent
+     * your Fragment's onCreateView() from being called twice, this initial automatic call to
+     * onNavigationItemSelected() should check whether the Fragment is already in existence
+     * inside your Activity."
+     * <p/>
+     * from http://stackoverflow.com/a/14295474
+     * <p/>
+     * In our case, if we start ImportKeysActivity with parameters to directly search using a fingerprint,
+     * the fragment would be loaded twice resulting in the query being empty after the second load.
+     * <p/>
+     * Our solution:
+     * To prevent that a fragment will be loaded again even if it was already loaded loadNavFragment
+     * checks against mCurrentNavPosition.
+     *
+     * @param itemPosition
+     * @param itemId
+     * @return
+     */
+    @Override
+    public boolean onNavigationItemSelected(int itemPosition, long itemId) {
+        Log.d(Constants.TAG, "onNavigationItemSelected");
+
+        loadNavFragment(itemPosition, null);
+
+        return true;
+    }
+
+    private void loadNavFragment(int itemPosition, Bundle args) {
+        if (mCurrentNavPosition != itemPosition) {
+            if (ActionBar.NAVIGATION_MODE_LIST == getSupportActionBar().getNavigationMode()) {
+                getSupportActionBar().setSelectedNavigationItem(itemPosition);
+            }
+            loadFragment(NAVIGATION_CLASSES[itemPosition], args, mNavigationStrings[itemPosition]);
+            mCurrentNavPosition = itemPosition;
+        }
+    }
+
+    private void loadFragment(Class<?> clss, Bundle args, String tag) {
+        mCurrentFragment = Fragment.instantiate(this, clss.getName(), args);
+
+        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
+        // Replace whatever is in the fragment container with this fragment
+        // and give the fragment a tag name equal to the string at the position selected
+        ft.replace(R.id.import_navigation_fragment, mCurrentFragment, tag);
+        // Apply changes
+        ft.commit();
+    }
+
+    public void loadFromFingerprintUri(Bundle savedInstanceState, Uri dataUri) {
+        String fingerprint = dataUri.toString().split(":")[1].toLowerCase(Locale.ENGLISH);
+
+        Log.d(Constants.TAG, "fingerprint: " + fingerprint);
+
+        loadFromFingerprint(savedInstanceState, fingerprint);
+    }
+
+    public void loadFromFingerprint(Bundle savedInstanceState, String fingerprint) {
+        if (fingerprint == null || fingerprint.length() < 40) {
+            AppMsg.makeText(this, R.string.import_qr_code_too_short_fingerprint,
+                    AppMsg.STYLE_ALERT).show();
+            return;
+        }
+
+        String query = "0x" + fingerprint;
+
+        // display keyserver fragment with query
+        Bundle args = new Bundle();
+        args.putString(ImportKeysServerFragment.ARG_QUERY, query);
+        args.putBoolean(ImportKeysServerFragment.ARG_DISABLE_QUERY_EDIT, true);
+        loadNavFragment(0, args);
+
+        // action: search directly
+        startListFragment(savedInstanceState, null, null, query);
+    }
+
+    public void loadCallback(byte[] importData, Uri dataUri, String serverQuery, String keyServer) {
+        mListFragment.loadNew(importData, dataUri, serverQuery, keyServer);
+    }
+
+    /**
+     * Import keys with mImportData
+     */
+    public void importKeys() {
+        // Message is received after importing is done in KeychainIntentService
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(
+                this,
+                getString(R.string.progress_importing),
+                ProgressDialog.STYLE_HORIZONTAL) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+                    // get returned data bundle
+                    Bundle returnData = message.getData();
+
+                    int added = returnData.getInt(KeychainIntentService.RESULT_IMPORT_ADDED);
+                    int updated = returnData
+                            .getInt(KeychainIntentService.RESULT_IMPORT_UPDATED);
+                    int bad = returnData.getInt(KeychainIntentService.RESULT_IMPORT_BAD);
+                    String toastMessage;
+                    if (added > 0 && updated > 0) {
+                        String addedStr = getResources().getQuantityString(
+                                R.plurals.keys_added_and_updated_1, added, added);
+                        String updatedStr = getResources().getQuantityString(
+                                R.plurals.keys_added_and_updated_2, updated, updated);
+                        toastMessage = addedStr + updatedStr;
+                    } else if (added > 0) {
+                        toastMessage = getResources().getQuantityString(R.plurals.keys_added,
+                                added, added);
+                    } else if (updated > 0) {
+                        toastMessage = getResources().getQuantityString(R.plurals.keys_updated,
+                                updated, updated);
+                    } else {
+                        toastMessage = getString(R.string.no_keys_added_or_updated);
+                    }
+                    AppMsg.makeText(ImportKeysActivity.this, toastMessage, AppMsg.STYLE_INFO)
+                            .show();
+                    if (bad > 0) {
+                        BadImportKeyDialogFragment badImportKeyDialogFragment =
+                                BadImportKeyDialogFragment.newInstance(bad);
+                        badImportKeyDialogFragment.show(getSupportFragmentManager(), "badKeyDialog");
+                    }
+
+                    if (ACTION_IMPORT_KEY_FROM_KEYSERVER_AND_RETURN.equals(getIntent().getAction())) {
+                        ImportKeysActivity.this.setResult(Activity.RESULT_OK, mPendingIntentData);
+                        finish();
+                    }
+                }
+            }
+        };
+
+        if (mListFragment.getKeyBytes() != null || mListFragment.getDataUri() != null) {
+            Log.d(Constants.TAG, "importKeys started");
+
+            // Send all information needed to service to import key in other thread
+            Intent intent = new Intent(this, KeychainIntentService.class);
+
+            intent.setAction(KeychainIntentService.ACTION_IMPORT_KEYRING);
+
+            // fill values for this action
+            Bundle data = new Bundle();
+
+            // get selected key entries
+            ArrayList<ImportKeysListEntry> selectedEntries = mListFragment.getSelectedData();
+            data.putParcelableArrayList(KeychainIntentService.IMPORT_KEY_LIST, selectedEntries);
+
+            intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+            // Create a new Messenger for the communication back
+            Messenger messenger = new Messenger(saveHandler);
+            intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+            // show progress dialog
+            saveHandler.showProgressDialog(this);
+
+            // start service with intent
+            startService(intent);
+        } else if (mListFragment.getServerQuery() != null) {
+            // Send all information needed to service to query keys in other thread
+            Intent intent = new Intent(this, KeychainIntentService.class);
+
+            intent.setAction(KeychainIntentService.ACTION_DOWNLOAD_AND_IMPORT_KEYS);
+
+            // fill values for this action
+            Bundle data = new Bundle();
+
+            data.putString(KeychainIntentService.DOWNLOAD_KEY_SERVER, mListFragment.getKeyServer());
+
+            // get selected key entries
+            ArrayList<ImportKeysListEntry> selectedEntries = mListFragment.getSelectedData();
+            data.putParcelableArrayList(KeychainIntentService.DOWNLOAD_KEY_LIST, selectedEntries);
+
+            intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+            // Create a new Messenger for the communication back
+            Messenger messenger = new Messenger(saveHandler);
+            intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+            // show progress dialog
+            saveHandler.showProgressDialog(this);
+
+            // start service with intent
+            startService(intent);
+        } else {
+            AppMsg.makeText(this, R.string.error_nothing_import, AppMsg.STYLE_ALERT).show();
+        }
+    }
+
+    /**
+     * NFC
+     */
+    @Override
+    public void onResume() {
+        super.onResume();
+        // Check to see that the Activity started due to an Android Beam
+        if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(getIntent().getAction())) {
+            handleActionNdefDiscovered(getIntent());
+        }
+    }
+
+    /**
+     * NFC
+     */
+    @Override
+    public void onNewIntent(Intent intent) {
+        // onResume gets called after this to handle the intent
+        setIntent(intent);
+    }
+
+    /**
+     * NFC: Parses the NDEF Message from the intent and prints to the TextView
+     */
+    @SuppressLint("NewApi")
+    void handleActionNdefDiscovered(Intent intent) {
+        Parcelable[] rawMsgs = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);
+        // only one message sent during the beam
+        NdefMessage msg = (NdefMessage) rawMsgs[0];
+        // record 0 contains the MIME type, record 1 is the AAR, if present
+        byte[] receivedKeyringBytes = msg.getRecords()[0].getPayload();
+
+        Intent importIntent = new Intent(this, ImportKeysActivity.class);
+        importIntent.setAction(ImportKeysActivity.ACTION_IMPORT_KEY);
+        importIntent.putExtra(ImportKeysActivity.EXTRA_KEY_BYTES, receivedKeyringBytes);
+
+        handleActions(null, importIntent);
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysClipboardFragment.java

@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import com.beardedhen.androidbootstrap.BootstrapButton;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.compatibility.ClipboardReflection;
+
+import java.util.Locale;
+
+public class ImportKeysClipboardFragment extends Fragment {
+
+    private ImportKeysActivity mImportActivity;
+    private BootstrapButton mButton;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static ImportKeysClipboardFragment newInstance() {
+        ImportKeysClipboardFragment frag = new ImportKeysClipboardFragment();
+
+        Bundle args = new Bundle();
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    /**
+     * Inflate the layout for this fragment
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.import_keys_clipboard_fragment, container, false);
+
+        mButton = (BootstrapButton) view.findViewById(R.id.import_clipboard_button);
+        mButton.setOnClickListener(new OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                CharSequence clipboardText = ClipboardReflection.getClipboardText(getActivity());
+                String sendText = "";
+                if (clipboardText != null) {
+                    sendText = clipboardText.toString();
+                    if (sendText.toLowerCase(Locale.ENGLISH).startsWith(Constants.FINGERPRINT_SCHEME)) {
+                        mImportActivity.loadFromFingerprintUri(null, Uri.parse(sendText));
+                        return;
+                    }
+                }
+                mImportActivity.loadCallback(sendText.getBytes(), null, null, null);
+            }
+        });
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mImportActivity = (ImportKeysActivity) getActivity();
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysFileFragment.java

@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.FileHelper;
+
+public class ImportKeysFileFragment extends Fragment {
+    private ImportKeysActivity mImportActivity;
+    private BootstrapButton mBrowse;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static ImportKeysFileFragment newInstance() {
+        ImportKeysFileFragment frag = new ImportKeysFileFragment();
+
+        Bundle args = new Bundle();
+
+        frag.setArguments(args);
+        return frag;
+    }
+
+    /**
+     * Inflate the layout for this fragment
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.import_keys_file_fragment, container, false);
+
+        mBrowse = (BootstrapButton) view.findViewById(R.id.import_keys_file_browse);
+
+        mBrowse.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                // open .asc or .gpg files
+                // setting it to text/plain prevents Cynaogenmod's file manager from selecting asc
+                // or gpg types!
+                FileHelper.openFile(ImportKeysFileFragment.this, Constants.Path.APP_DIR + "/",
+                        "*/*", Id.request.filename);
+            }
+        });
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mImportActivity = (ImportKeysActivity) getActivity();
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode & 0xFFFF) {
+            case Id.request.filename: {
+                if (resultCode == Activity.RESULT_OK && data != null) {
+
+                    // load data
+                    mImportActivity.loadCallback(null, data.getData(), null, null);
+                }
+
+                break;
+            }
+
+            default:
+                super.onActivityResult(requestCode, resultCode, data);
+
+                break;
+        }
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysListFragment.java

@@ -0,0 +1,305 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.Activity;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.app.ListFragment;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.content.Loader;
+import android.view.View;
+import android.widget.ListView;
+import com.devspark.appmsg.AppMsg;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.Preferences;
+import org.sufficientlysecure.keychain.ui.adapter.AsyncTaskResultWrapper;
+import org.sufficientlysecure.keychain.ui.adapter.ImportKeysAdapter;
+import org.sufficientlysecure.keychain.ui.adapter.ImportKeysListEntry;
+import org.sufficientlysecure.keychain.ui.adapter.ImportKeysListLoader;
+import org.sufficientlysecure.keychain.ui.adapter.ImportKeysListServerLoader;
+import org.sufficientlysecure.keychain.util.InputData;
+import org.sufficientlysecure.keychain.util.KeyServer;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.io.ByteArrayInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ImportKeysListFragment extends ListFragment implements
+        LoaderManager.LoaderCallbacks<AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>> {
+    private static final String ARG_DATA_URI = "uri";
+    private static final String ARG_BYTES = "bytes";
+    private static final String ARG_SERVER_QUERY = "query";
+
+    private Activity mActivity;
+    private ImportKeysAdapter mAdapter;
+
+    private byte[] mKeyBytes;
+    private Uri mDataUri;
+    private String mServerQuery;
+    private String mKeyServer;
+
+    private static final int LOADER_ID_BYTES = 0;
+    private static final int LOADER_ID_SERVER_QUERY = 1;
+
+    public byte[] getKeyBytes() {
+        return mKeyBytes;
+    }
+
+    public Uri getDataUri() {
+        return mDataUri;
+    }
+
+    public String getServerQuery() {
+        return mServerQuery;
+    }
+
+    public String getKeyServer() {
+        return mKeyServer;
+    }
+
+    public List<ImportKeysListEntry> getData() {
+        return mAdapter.getData();
+    }
+
+    public ArrayList<ImportKeysListEntry> getSelectedData() {
+        return mAdapter.getSelectedData();
+    }
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static ImportKeysListFragment newInstance(byte[] bytes, Uri dataUri, String serverQuery) {
+        ImportKeysListFragment frag = new ImportKeysListFragment();
+
+        Bundle args = new Bundle();
+        args.putByteArray(ARG_BYTES, bytes);
+        args.putParcelable(ARG_DATA_URI, dataUri);
+        args.putString(ARG_SERVER_QUERY, serverQuery);
+
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    /**
+     * Define Adapter and Loader on create of Activity
+     */
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mActivity = getActivity();
+
+        // Give some text to display if there is no data. In a real
+        // application this would come from a resource.
+        setEmptyText(mActivity.getString(R.string.error_nothing_import));
+
+        // Create an empty adapter we will use to display the loaded data.
+        mAdapter = new ImportKeysAdapter(mActivity);
+        setListAdapter(mAdapter);
+
+        mDataUri = getArguments().getParcelable(ARG_DATA_URI);
+        mKeyBytes = getArguments().getByteArray(ARG_BYTES);
+        mServerQuery = getArguments().getString(ARG_SERVER_QUERY);
+
+        // TODO: this is used when scanning QR Code. Currently it simply uses keyserver nr 0
+        mKeyServer = Preferences.getPreferences(getActivity())
+                .getKeyServers()[0];
+
+        if (mDataUri != null || mKeyBytes != null) {
+            // Start out with a progress indicator.
+            setListShown(false);
+
+            // Prepare the loader. Either re-connect with an existing one,
+            // or start a new one.
+            // give arguments to onCreateLoader()
+            getLoaderManager().initLoader(LOADER_ID_BYTES, null, this);
+        }
+
+        if (mServerQuery != null && mKeyServer != null) {
+            // Start out with a progress indicator.
+            setListShown(false);
+
+            // Prepare the loader. Either re-connect with an existing one,
+            // or start a new one.
+            // give arguments to onCreateLoader()
+            getLoaderManager().initLoader(LOADER_ID_SERVER_QUERY, null, this);
+        }
+    }
+
+    @Override
+    public void onListItemClick(ListView l, View v, int position, long id) {
+        super.onListItemClick(l, v, position, id);
+
+        // Select checkbox!
+        // Update underlying data and notify adapter of change. The adapter will
+        // update the view automatically.
+        ImportKeysListEntry entry = mAdapter.getItem(position);
+        entry.setSelected(!entry.isSelected());
+        mAdapter.notifyDataSetChanged();
+    }
+
+    public void loadNew(byte[] keyBytes, Uri dataUri, String serverQuery, String keyServer) {
+        mKeyBytes = keyBytes;
+        mDataUri = dataUri;
+        mServerQuery = serverQuery;
+        mKeyServer = keyServer;
+
+        if (mKeyBytes != null || mDataUri != null) {
+            // Start out with a progress indicator.
+            setListShown(false);
+
+            getLoaderManager().restartLoader(LOADER_ID_BYTES, null, this);
+        }
+
+        if (mServerQuery != null && mKeyServer != null) {
+            // Start out with a progress indicator.
+            setListShown(false);
+
+            getLoaderManager().restartLoader(LOADER_ID_SERVER_QUERY, null, this);
+        }
+    }
+
+    @Override
+    public Loader<AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>>
+                                        onCreateLoader(int id, Bundle args) {
+        switch (id) {
+            case LOADER_ID_BYTES: {
+                InputData inputData = getInputData(mKeyBytes, mDataUri);
+                return new ImportKeysListLoader(mActivity, inputData);
+            }
+            case LOADER_ID_SERVER_QUERY: {
+                return new ImportKeysListServerLoader(getActivity(), mServerQuery, mKeyServer);
+            }
+
+            default:
+                return null;
+        }
+    }
+
+    @Override
+    public void onLoadFinished(Loader<AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>> loader,
+                               AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>> data) {
+        // Swap the new cursor in. (The framework will take care of closing the
+        // old cursor once we return.)
+
+        Log.d(Constants.TAG, "data: " + data.getResult());
+
+        // swap in the real data!
+        mAdapter.setData(data.getResult());
+        mAdapter.notifyDataSetChanged();
+
+        setListAdapter(mAdapter);
+
+        // The list should now be shown.
+        if (isResumed()) {
+            setListShown(true);
+        } else {
+            setListShownNoAnimation(true);
+        }
+
+        Exception error = data.getError();
+
+        switch (loader.getId()) {
+            case LOADER_ID_BYTES:
+
+                if (error == null) {
+                    // No error
+                } else if (error instanceof ImportKeysListLoader.FileHasNoContent) {
+                    AppMsg.makeText(getActivity(), R.string.error_import_file_no_content,
+                            AppMsg.STYLE_ALERT).show();
+                } else if (error instanceof ImportKeysListLoader.NonPgpPart) {
+                    AppMsg.makeText(getActivity(),
+                            ((ImportKeysListLoader.NonPgpPart) error).getCount() + " " + getResources().
+                                    getQuantityString(R.plurals.error_import_non_pgp_part,
+                                            ((ImportKeysListLoader.NonPgpPart) error).getCount()),
+                            new AppMsg.Style(AppMsg.LENGTH_LONG, R.color.confirm)).show();
+                } else {
+                    AppMsg.makeText(getActivity(), R.string.error_generic_report_bug,
+                            new AppMsg.Style(AppMsg.LENGTH_LONG, R.color.alert)).show();
+                }
+                break;
+
+            case LOADER_ID_SERVER_QUERY:
+
+                if (error == null) {
+                    AppMsg.makeText(
+                            getActivity(), getResources().getQuantityString(R.plurals.keys_found,
+                            mAdapter.getCount(), mAdapter.getCount()),
+                            AppMsg.STYLE_INFO
+                    ).show();
+                } else if (error instanceof KeyServer.InsufficientQuery) {
+                    AppMsg.makeText(getActivity(), R.string.error_keyserver_insufficient_query,
+                            AppMsg.STYLE_ALERT).show();
+                } else if (error instanceof KeyServer.QueryException) {
+                    AppMsg.makeText(getActivity(), R.string.error_keyserver_query,
+                            AppMsg.STYLE_ALERT).show();
+                } else if (error instanceof KeyServer.TooManyResponses) {
+                    AppMsg.makeText(getActivity(), R.string.error_keyserver_too_many_responses,
+                            AppMsg.STYLE_ALERT).show();
+                }
+                break;
+
+            default:
+                break;
+        }
+    }
+
+    @Override
+    public void onLoaderReset(Loader<AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>> loader) {
+        switch (loader.getId()) {
+            case LOADER_ID_BYTES:
+                // Clear the data in the adapter.
+                mAdapter.clear();
+                break;
+            case LOADER_ID_SERVER_QUERY:
+                // Clear the data in the adapter.
+                mAdapter.clear();
+                break;
+            default:
+                break;
+        }
+    }
+
+    private InputData getInputData(byte[] importBytes, Uri dataUri) {
+        InputData inputData = null;
+        if (importBytes != null) {
+            inputData = new InputData(new ByteArrayInputStream(importBytes), importBytes.length);
+        } else if (dataUri != null) {
+            try {
+                InputStream inputStream = getActivity().getContentResolver().openInputStream(dataUri);
+                int length = inputStream.available();
+
+                inputData = new InputData(inputStream, length);
+            } catch (FileNotFoundException e) {
+                Log.e(Constants.TAG, "FileNotFoundException!", e);
+            } catch (IOException e) {
+                Log.e(Constants.TAG, "IOException!", e);
+            }
+        }
+
+        return inputData;
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysNFCFragment.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import org.sufficientlysecure.keychain.R;
+
+public class ImportKeysNFCFragment extends Fragment {
+
+    private BootstrapButton mButton;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static ImportKeysNFCFragment newInstance() {
+        ImportKeysNFCFragment frag = new ImportKeysNFCFragment();
+
+        Bundle args = new Bundle();
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    /**
+     * Inflate the layout for this fragment
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.import_keys_nfc_fragment, container, false);
+
+        mButton = (BootstrapButton) view.findViewById(R.id.import_nfc_button);
+        mButton.setOnClickListener(new OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                // show nfc help
+                Intent intent = new Intent(getActivity(), HelpActivity.class);
+                intent.putExtra(HelpActivity.EXTRA_SELECTED_TAB, 2);
+                startActivityForResult(intent, 0);
+            }
+        });
+
+        return view;
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysQrCodeFragment.java

@@ -0,0 +1,205 @@
+/*
+ * Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import com.google.zxing.integration.android.IntentResult;
+
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import com.beardedhen.androidbootstrap.BootstrapButton;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.util.IntentIntegratorSupportV4;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.util.ArrayList;
+import java.util.Locale;
+
+public class ImportKeysQrCodeFragment extends Fragment {
+
+    private ImportKeysActivity mImportActivity;
+    private BootstrapButton mButton;
+    private TextView mText;
+    private ProgressBar mProgress;
+
+    private String[] mScannedContent;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static ImportKeysQrCodeFragment newInstance() {
+        ImportKeysQrCodeFragment frag = new ImportKeysQrCodeFragment();
+
+        Bundle args = new Bundle();
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    /**
+     * Inflate the layout for this fragment
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.import_keys_qr_code_fragment, container, false);
+
+        mButton = (BootstrapButton) view.findViewById(R.id.import_qrcode_button);
+        mText = (TextView) view.findViewById(R.id.import_qrcode_text);
+        mProgress = (ProgressBar) view.findViewById(R.id.import_qrcode_progress);
+
+        mButton.setOnClickListener(new OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                // scan using xzing's Barcode Scanner
+                new IntentIntegratorSupportV4(ImportKeysQrCodeFragment.this).initiateScan();
+            }
+        });
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mImportActivity = (ImportKeysActivity) getActivity();
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode & 0xFFFF) {
+            case IntentIntegratorSupportV4.REQUEST_CODE: {
+                IntentResult scanResult = IntentIntegratorSupportV4.parseActivityResult(requestCode,
+                        resultCode, data);
+                if (scanResult != null && scanResult.getFormatName() != null) {
+                    String scannedContent = scanResult.getContents();
+
+                    Log.d(Constants.TAG, "scannedContent: " + scannedContent);
+
+                    // look if it's fingerprint only
+                    if (scannedContent.toLowerCase(Locale.ENGLISH).startsWith(Constants.FINGERPRINT_SCHEME)) {
+                        importFingerprint(Uri.parse(scanResult.getContents()));
+                        return;
+                    }
+
+                    // look if it is the whole key
+                    String[] parts = scannedContent.split(",");
+                    if (parts.length == 3) {
+                        importParts(parts);
+                        return;
+                    }
+
+                    // is this a full key encoded as qr code?
+                    if (scannedContent.startsWith("-----BEGIN PGP")) {
+                        mImportActivity.loadCallback(scannedContent.getBytes(), null, null, null);
+                        return;
+                    }
+
+                    // fail...
+                    Toast.makeText(getActivity(), R.string.import_qr_code_wrong, Toast.LENGTH_LONG)
+                            .show();
+                }
+
+                break;
+            }
+
+            default:
+                super.onActivityResult(requestCode, resultCode, data);
+
+                break;
+        }
+    }
+
+    public void importFingerprint(Uri dataUri) {
+        mImportActivity.loadFromFingerprintUri(null, dataUri);
+    }
+
+    private void importParts(String[] parts) {
+        int counter = Integer.valueOf(parts[0]);
+        int size = Integer.valueOf(parts[1]);
+        String content = parts[2];
+
+        Log.d(Constants.TAG, "" + counter);
+        Log.d(Constants.TAG, "" + size);
+        Log.d(Constants.TAG, "" + content);
+
+        // first qr code -> setup
+        if (counter == 0) {
+            mScannedContent = new String[size];
+            mProgress.setMax(size);
+            mProgress.setVisibility(View.VISIBLE);
+            mText.setVisibility(View.VISIBLE);
+        }
+
+        if (mScannedContent == null || counter > mScannedContent.length) {
+            Toast.makeText(getActivity(), R.string.import_qr_code_start_with_one, Toast.LENGTH_LONG)
+                    .show();
+            return;
+        }
+
+        // save scanned content
+        mScannedContent[counter] = content;
+
+        // get missing numbers
+        ArrayList<Integer> missing = new ArrayList<Integer>();
+        for (int i = 0; i < mScannedContent.length; i++) {
+            if (mScannedContent[i] == null) {
+                missing.add(i);
+            }
+        }
+
+        // update progress and text
+        int alreadyScanned = mScannedContent.length - missing.size();
+        mProgress.setProgress(alreadyScanned);
+
+        String missingString = "";
+        for (int m : missing) {
+            if (!missingString.equals("")) {
+                missingString += ", ";
+            }
+            missingString += String.valueOf(m + 1);
+        }
+
+        String missingText = getResources().getQuantityString(R.plurals.import_qr_code_missing,
+                missing.size(), missingString);
+        mText.setText(missingText);
+
+        // finished!
+        if (missing.size() == 0) {
+            mText.setText(R.string.import_qr_code_finished);
+            String result = "";
+            for (String in : mScannedContent) {
+                result += in;
+            }
+            mImportActivity.loadCallback(result.getBytes(), null, null, null);
+        }
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysServerFragment.java

@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.KeyEvent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.view.inputmethod.EditorInfo;
+import android.view.inputmethod.InputMethodManager;
+import android.widget.ArrayAdapter;
+import android.widget.EditText;
+import android.widget.Spinner;
+import android.widget.TextView;
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.Preferences;
+import org.sufficientlysecure.keychain.util.Log;
+
+public class ImportKeysServerFragment extends Fragment {
+    public static final String ARG_QUERY = "query";
+    public static final String ARG_KEY_SERVER = "key_server";
+    public static final String ARG_DISABLE_QUERY_EDIT = "disable_query_edit";
+
+    private ImportKeysActivity mImportActivity;
+
+    private BootstrapButton mSearchButton;
+    private EditText mQueryEditText;
+    private Spinner mServerSpinner;
+    private ArrayAdapter<String> mServerAdapter;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static ImportKeysServerFragment newInstance(String query, String keyServer) {
+        ImportKeysServerFragment frag = new ImportKeysServerFragment();
+
+        Bundle args = new Bundle();
+        args.putString(ARG_QUERY, query);
+        args.putString(ARG_KEY_SERVER, keyServer);
+
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    /**
+     * Inflate the layout for this fragment
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.import_keys_server_fragment, container, false);
+
+        mSearchButton = (BootstrapButton) view.findViewById(R.id.import_server_search);
+        mQueryEditText = (EditText) view.findViewById(R.id.import_server_query);
+        mServerSpinner = (Spinner) view.findViewById(R.id.import_server_spinner);
+
+        // add keyservers to spinner
+        mServerAdapter = new ArrayAdapter<String>(getActivity(),
+                android.R.layout.simple_spinner_item, Preferences.getPreferences(getActivity())
+                .getKeyServers());
+        mServerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        mServerSpinner.setAdapter(mServerAdapter);
+        if (mServerAdapter.getCount() > 0) {
+            mServerSpinner.setSelection(0);
+        } else {
+            mSearchButton.setEnabled(false);
+        }
+
+        mSearchButton.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                String query = mQueryEditText.getText().toString();
+                String keyServer = (String) mServerSpinner.getSelectedItem();
+                search(query, keyServer);
+
+                // close keyboard after pressing search
+                InputMethodManager imm =
+                        (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
+                imm.hideSoftInputFromWindow(mQueryEditText.getWindowToken(), 0);
+            }
+        });
+
+        mQueryEditText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
+            @Override
+            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
+                if (actionId == EditorInfo.IME_ACTION_SEARCH) {
+                    String query = mQueryEditText.getText().toString();
+                    String keyServer = (String) mServerSpinner.getSelectedItem();
+                    search(query, keyServer);
+
+                    // Don't return true to let the keyboard close itself after pressing search
+                    return false;
+                }
+                return false;
+            }
+        });
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mImportActivity = (ImportKeysActivity) getActivity();
+
+        // set displayed values
+        if (getArguments() != null) {
+            if (getArguments().containsKey(ARG_QUERY)) {
+                String query = getArguments().getString(ARG_QUERY);
+                mQueryEditText.setText(query, TextView.BufferType.EDITABLE);
+
+                Log.d(Constants.TAG, "query: " + query);
+            }
+
+            if (getArguments().containsKey(ARG_KEY_SERVER)) {
+                String keyServer = getArguments().getString(ARG_KEY_SERVER);
+                int keyServerPos = mServerAdapter.getPosition(keyServer);
+                mServerSpinner.setSelection(keyServerPos);
+
+                Log.d(Constants.TAG, "keyServer: " + keyServer);
+            }
+
+            if (getArguments().getBoolean(ARG_DISABLE_QUERY_EDIT, false)) {
+                mQueryEditText.setEnabled(false);
+            }
+        }
+    }
+
+    private void search(String query, String keyServer) {
+        mImportActivity.loadCallback(null, null, query, keyServer);
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/KeyListActivity.java

@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.ExportHelper;
+
+public class KeyListActivity extends DrawerActivity {
+
+    ExportHelper mExportHelper;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        mExportHelper = new ExportHelper(this);
+
+        setContentView(R.layout.key_list_activity);
+
+        // now setup navigation drawer in DrawerActivity...
+        setupDrawerNavigation(savedInstanceState);
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        super.onCreateOptionsMenu(menu);
+        getMenuInflater().inflate(R.menu.key_list, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.menu_key_list_import:
+                importKeys();
+                return true;
+
+            case R.id.menu_key_list_create:
+                createKey();
+                return true;
+
+            case R.id.menu_key_list_create_expert:
+                createKeyExpert();
+                return true;
+
+            case R.id.menu_key_list_export:
+                mExportHelper.showExportKeysDialog(null, Constants.Path.APP_DIR_FILE, true);
+                return true;
+
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+
+    private void importKeys() {
+        Intent intent = new Intent(this, ImportKeysActivity.class);
+        startActivityForResult(intent, 0);
+    }
+
+    private void createKey() {
+        Intent intent = new Intent(this, EditKeyActivity.class);
+        intent.setAction(EditKeyActivity.ACTION_CREATE_KEY);
+        intent.putExtra(EditKeyActivity.EXTRA_GENERATE_DEFAULT_KEYS, true);
+        intent.putExtra(EditKeyActivity.EXTRA_USER_IDS, ""); // show user id view
+        startActivityForResult(intent, 0);
+    }
+
+    private void createKeyExpert() {
+        Intent intent = new Intent(this, EditKeyActivity.class);
+        intent.setAction(EditKeyActivity.ACTION_CREATE_KEY);
+        startActivityForResult(intent, 0);
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/KeyListFragment.java

@@ -0,0 +1,700 @@
+/*
+ * Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.annotation.SuppressLint;
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.graphics.Color;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.os.Messenger;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.content.CursorLoader;
+import android.support.v4.content.Loader;
+import android.support.v4.view.MenuItemCompat;
+import android.support.v7.app.ActionBarActivity;
+import android.support.v7.widget.SearchView;
+import android.text.TextUtils;
+import android.view.ActionMode;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.view.animation.AnimationUtils;
+import android.widget.AbsListView.MultiChoiceModeListener;
+import android.widget.AdapterView;
+import android.widget.Button;
+import android.widget.FrameLayout;
+import android.widget.ImageView;
+import android.widget.ListView;
+import android.widget.TextView;
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.ExportHelper;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRingData;
+import org.sufficientlysecure.keychain.ui.adapter.HighlightQueryCursorAdapter;
+import org.sufficientlysecure.keychain.ui.dialog.DeleteKeyDialogFragment;
+import org.sufficientlysecure.keychain.util.Log;
+import se.emilsjolander.stickylistheaders.ApiLevelTooLowException;
+import se.emilsjolander.stickylistheaders.StickyListHeadersAdapter;
+import se.emilsjolander.stickylistheaders.StickyListHeadersListView;
+
+import java.util.HashMap;
+
+/**
+ * Public key list with sticky list headers. It does _not_ extend ListFragment because it uses
+ * StickyListHeaders library which does not extend upon ListView.
+ */
+public class KeyListFragment extends Fragment
+        implements SearchView.OnQueryTextListener, AdapterView.OnItemClickListener,
+        LoaderManager.LoaderCallbacks<Cursor> {
+
+    private KeyListAdapter mAdapter;
+    private StickyListHeadersListView mStickyList;
+
+    // rebuild functionality of ListFragment, http://stackoverflow.com/a/12504097
+    boolean mListShown;
+    View mProgressContainer;
+    View mListContainer;
+
+    private String mCurQuery;
+    private SearchView mSearchView;
+    // empty list layout
+    private BootstrapButton mButtonEmptyCreate;
+    private BootstrapButton mButtonEmptyImport;
+
+
+    /**
+     * Load custom layout with StickyListView from library
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View root = inflater.inflate(R.layout.key_list_fragment, container, false);
+
+        mStickyList = (StickyListHeadersListView) root.findViewById(R.id.key_list_list);
+        mStickyList.setOnItemClickListener(this);
+
+
+        // empty view
+        mButtonEmptyCreate = (BootstrapButton) root.findViewById(R.id.key_list_empty_button_create);
+        mButtonEmptyCreate.setOnClickListener(new OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(getActivity(), EditKeyActivity.class);
+                intent.setAction(EditKeyActivity.ACTION_CREATE_KEY);
+                intent.putExtra(EditKeyActivity.EXTRA_GENERATE_DEFAULT_KEYS, true);
+                intent.putExtra(EditKeyActivity.EXTRA_USER_IDS, ""); // show user id view
+                startActivityForResult(intent, 0);
+            }
+        });
+        mButtonEmptyImport = (BootstrapButton) root.findViewById(R.id.key_list_empty_button_import);
+        mButtonEmptyImport.setOnClickListener(new OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(getActivity(), ImportKeysActivity.class);
+                intent.setAction(ImportKeysActivity.ACTION_IMPORT_KEY_FROM_FILE);
+                startActivityForResult(intent, 0);
+            }
+        });
+
+        // rebuild functionality of ListFragment, http://stackoverflow.com/a/12504097
+        mListContainer = root.findViewById(R.id.key_list_list_container);
+        mProgressContainer = root.findViewById(R.id.key_list_progress_container);
+        mListShown = true;
+
+        return root;
+    }
+
+    /**
+     * Define Adapter and Loader on create of Activity
+     */
+    @SuppressLint("NewApi")
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mStickyList.setOnItemClickListener(this);
+        mStickyList.setAreHeadersSticky(true);
+        mStickyList.setDrawingListUnderStickyHeader(false);
+        mStickyList.setFastScrollEnabled(true);
+        try {
+            mStickyList.setFastScrollAlwaysVisible(true);
+        } catch (ApiLevelTooLowException e) {
+        }
+
+        /*
+         * ActionBarSherlock does not support MultiChoiceModeListener. Thus multi-selection is only
+         * available for Android >= 3.0
+         */
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
+            mStickyList.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
+            mStickyList.getWrappedList().setMultiChoiceModeListener(new MultiChoiceModeListener() {
+
+                @Override
+                public boolean onCreateActionMode(ActionMode mode, Menu menu) {
+                    android.view.MenuInflater inflater = getActivity().getMenuInflater();
+                    inflater.inflate(R.menu.key_list_multi, menu);
+                    return true;
+                }
+
+                @Override
+                public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
+                    return false;
+                }
+
+                @Override
+                public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
+
+                    // get IDs for checked positions as long array
+                    long[] ids;
+
+                    switch (item.getItemId()) {
+                        case R.id.menu_key_list_multi_encrypt: {
+                            ids = mAdapter.getCurrentSelectedMasterKeyIds();
+                            encrypt(mode, ids);
+                            break;
+                        }
+                        case R.id.menu_key_list_multi_delete: {
+                            ids = mAdapter.getCurrentSelectedMasterKeyIds();
+                            showDeleteKeyDialog(mode, ids);
+                            break;
+                        }
+                        case R.id.menu_key_list_multi_export: {
+                            ids = mAdapter.getCurrentSelectedMasterKeyIds();
+                            ExportHelper mExportHelper = new ExportHelper((ActionBarActivity) getActivity());
+                            mExportHelper.showExportKeysDialog(
+                                    ids, Constants.Path.APP_DIR_FILE, mAdapter.isAnySecretSelected());
+                            break;
+                        }
+                        case R.id.menu_key_list_multi_select_all: {
+                            // select all
+                            for (int i = 0; i < mStickyList.getCount(); i++) {
+                                mStickyList.setItemChecked(i, true);
+                            }
+                            break;
+                        }
+                    }
+                    return true;
+                }
+
+                @Override
+                public void onDestroyActionMode(ActionMode mode) {
+                    mAdapter.clearSelection();
+                }
+
+                @Override
+                public void onItemCheckedStateChanged(ActionMode mode, int position, long id,
+                                                      boolean checked) {
+                    if (checked) {
+                        mAdapter.setNewSelection(position, checked);
+                    } else {
+                        mAdapter.removeSelection(position);
+                    }
+                    int count = mStickyList.getCheckedItemCount();
+                    String keysSelected = getResources().getQuantityString(
+                            R.plurals.key_list_selected_keys, count, count);
+                    mode.setTitle(keysSelected);
+                }
+
+            });
+        }
+
+        // We have a menu item to show in action bar.
+        setHasOptionsMenu(true);
+
+        // NOTE: Not supported by StickyListHeader, but reimplemented here
+        // Start out with a progress indicator.
+        setListShown(false);
+
+        // Create an empty adapter we will use to display the loaded data.
+        mAdapter = new KeyListAdapter(getActivity(), null, Id.type.public_key);
+        mStickyList.setAdapter(mAdapter);
+
+        // Prepare the loader. Either re-connect with an existing one,
+        // or start a new one.
+        getLoaderManager().initLoader(0, null, this);
+    }
+
+    // These are the rows that we will retrieve.
+    static final String[] PROJECTION = new String[]{
+            KeyRings._ID,
+            KeyRings.MASTER_KEY_ID,
+            KeyRings.USER_ID,
+            KeyRings.IS_REVOKED,
+            KeyRings.VERIFIED,
+            KeyRings.HAS_SECRET
+    };
+
+    static final int INDEX_MASTER_KEY_ID = 1;
+    static final int INDEX_USER_ID = 2;
+    static final int INDEX_IS_REVOKED = 3;
+    static final int INDEX_VERIFIED = 4;
+    static final int INDEX_HAS_SECRET = 5;
+
+    @Override
+    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        // This is called when a new Loader needs to be created. This
+        // sample only has one Loader, so we don't care about the ID.
+        Uri baseUri = KeyRings.buildUnifiedKeyRingsUri();
+        String where = null;
+        String whereArgs[] = null;
+        if (mCurQuery != null) {
+            where = KeyRings.USER_ID + " LIKE ?";
+            whereArgs = new String[]{"%" + mCurQuery + "%"};
+        }
+        // Now create and return a CursorLoader that will take care of
+        // creating a Cursor for the data being displayed.
+        return new CursorLoader(getActivity(), baseUri, PROJECTION, where, whereArgs, null);
+    }
+
+    @Override
+    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
+        // Swap the new cursor in. (The framework will take care of closing the
+        // old cursor once we return.)
+        mAdapter.setSearchQuery(mCurQuery);
+        mAdapter.swapCursor(data);
+
+        mStickyList.setAdapter(mAdapter);
+
+        // this view is made visible if no data is available
+        mStickyList.setEmptyView(getActivity().findViewById(R.id.key_list_empty));
+
+        // NOTE: Not supported by StickyListHeader, but reimplemented here
+        // The list should now be shown.
+        if (isResumed()) {
+            setListShown(true);
+        } else {
+            setListShownNoAnimation(true);
+        }
+    }
+
+    @Override
+    public void onLoaderReset(Loader<Cursor> loader) {
+        // This is called when the last Cursor provided to onLoadFinished()
+        // above is about to be closed. We need to make sure we are no
+        // longer using it.
+        mAdapter.swapCursor(null);
+    }
+
+    /**
+     * On click on item, start key view activity
+     */
+    @Override
+    public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
+        Intent viewIntent = null;
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
+            viewIntent = new Intent(getActivity(), ViewKeyActivity.class);
+        } else {
+            viewIntent = new Intent(getActivity(), ViewKeyActivityJB.class);
+        }
+        viewIntent.setData(
+                KeyRings.buildGenericKeyRingUri(Long.toString(mAdapter.getMasterKeyId(position))));
+        startActivity(viewIntent);
+    }
+
+    @TargetApi(11)
+    protected void encrypt(ActionMode mode, long[] masterKeyIds) {
+        Intent intent = new Intent(getActivity(), EncryptActivity.class);
+        intent.setAction(EncryptActivity.ACTION_ENCRYPT);
+        intent.putExtra(EncryptActivity.EXTRA_ENCRYPTION_KEY_IDS, masterKeyIds);
+        // used instead of startActivity set actionbar based on callingPackage
+        startActivityForResult(intent, 0);
+
+        mode.finish();
+    }
+
+    /**
+     * Show dialog to delete key
+     *
+     * @param masterKeyIds
+     */
+    @TargetApi(11)
+    // TODO: this method needs an overhaul to handle both public and secret keys gracefully!
+    public void showDeleteKeyDialog(final ActionMode mode, long[] masterKeyIds) {
+        // Message is received after key is deleted
+        Handler returnHandler = new Handler() {
+            @Override
+            public void handleMessage(Message message) {
+                if (message.what == DeleteKeyDialogFragment.MESSAGE_OKAY) {
+                    mode.finish();
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(returnHandler);
+
+        DeleteKeyDialogFragment deleteKeyDialog = DeleteKeyDialogFragment.newInstance(messenger,
+                masterKeyIds);
+
+        deleteKeyDialog.show(getActivity().getSupportFragmentManager(), "deleteKeyDialog");
+    }
+
+
+    @Override
+    public void onCreateOptionsMenu(final Menu menu, final MenuInflater inflater) {
+        // Get the searchview
+        MenuItem searchItem = menu.findItem(R.id.menu_key_list_search);
+        mSearchView = (SearchView) MenuItemCompat.getActionView(searchItem);
+
+        // Execute this when searching
+        mSearchView.setOnQueryTextListener(this);
+
+        // Erase search result without focus
+        MenuItemCompat.setOnActionExpandListener(searchItem, new MenuItemCompat.OnActionExpandListener() {
+            @Override
+            public boolean onMenuItemActionExpand(MenuItem item) {
+                return true;
+            }
+
+            @Override
+            public boolean onMenuItemActionCollapse(MenuItem item) {
+                mCurQuery = null;
+                mSearchView.setQuery("", true);
+                getLoaderManager().restartLoader(0, null, KeyListFragment.this);
+                return true;
+            }
+        });
+
+        super.onCreateOptionsMenu(menu, inflater);
+    }
+
+    @Override
+    public boolean onQueryTextSubmit(String s) {
+        return true;
+    }
+
+    @Override
+    public boolean onQueryTextChange(String s) {
+        // Called when the action bar search text has changed.  Update
+        // the search filter, and restart the loader to do a new query
+        // with this filter.
+        mCurQuery = !TextUtils.isEmpty(s) ? s : null;
+        getLoaderManager().restartLoader(0, null, this);
+        return true;
+    }
+
+    // rebuild functionality of ListFragment, http://stackoverflow.com/a/12504097
+    public void setListShown(boolean shown, boolean animate) {
+        if (mListShown == shown) {
+            return;
+        }
+        mListShown = shown;
+        if (shown) {
+            if (animate) {
+                mProgressContainer.startAnimation(AnimationUtils.loadAnimation(
+                        getActivity(), android.R.anim.fade_out));
+                mListContainer.startAnimation(AnimationUtils.loadAnimation(
+                        getActivity(), android.R.anim.fade_in));
+            }
+            mProgressContainer.setVisibility(View.GONE);
+            mListContainer.setVisibility(View.VISIBLE);
+        } else {
+            if (animate) {
+                mProgressContainer.startAnimation(AnimationUtils.loadAnimation(
+                        getActivity(), android.R.anim.fade_in));
+                mListContainer.startAnimation(AnimationUtils.loadAnimation(
+                        getActivity(), android.R.anim.fade_out));
+            }
+            mProgressContainer.setVisibility(View.VISIBLE);
+            mListContainer.setVisibility(View.INVISIBLE);
+        }
+    }
+
+    // rebuild functionality of ListFragment, http://stackoverflow.com/a/12504097
+    public void setListShown(boolean shown) {
+        setListShown(shown, true);
+    }
+
+    // rebuild functionality of ListFragment, http://stackoverflow.com/a/12504097
+    public void setListShownNoAnimation(boolean shown) {
+        setListShown(shown, false);
+    }
+
+    /**
+     * Implements StickyListHeadersAdapter from library
+     */
+    private class KeyListAdapter extends HighlightQueryCursorAdapter implements StickyListHeadersAdapter {
+        private LayoutInflater mInflater;
+
+        private HashMap<Integer, Boolean> mSelection = new HashMap<Integer, Boolean>();
+
+        public KeyListAdapter(Context context, Cursor c, int flags) {
+            super(context, c, flags);
+
+            mInflater = LayoutInflater.from(context);
+        }
+
+        @Override
+        public Cursor swapCursor(Cursor newCursor) {
+            return super.swapCursor(newCursor);
+        }
+
+        /**
+         * Bind cursor data to the item list view
+         * <p/>
+         * NOTE: CursorAdapter already implements the ViewHolder pattern in its getView() method.
+         * Thus no ViewHolder is required here.
+         */
+        @Override
+        public void bindView(View view, Context context, Cursor cursor) {
+
+            { // set name and stuff, common to both key types
+                TextView mainUserId = (TextView) view.findViewById(R.id.mainUserId);
+                TextView mainUserIdRest = (TextView) view.findViewById(R.id.mainUserIdRest);
+
+                String userId = cursor.getString(INDEX_USER_ID);
+                String[] userIdSplit = PgpKeyHelper.splitUserId(userId);
+                if (userIdSplit[0] != null) {
+                    mainUserId.setText(highlightSearchQuery(userIdSplit[0]));
+                } else {
+                    mainUserId.setText(R.string.user_id_no_name);
+                }
+                if (userIdSplit[1] != null) {
+                    mainUserIdRest.setText(highlightSearchQuery(userIdSplit[1]));
+                    mainUserIdRest.setVisibility(View.VISIBLE);
+                } else {
+                    mainUserIdRest.setVisibility(View.GONE);
+                }
+            }
+
+            { // set edit button and revoked info, specific by key type
+                View statusDivider = (View) view.findViewById(R.id.status_divider);
+                FrameLayout statusLayout = (FrameLayout) view.findViewById(R.id.status_layout);
+                Button button = (Button) view.findViewById(R.id.edit);
+                TextView revoked = (TextView) view.findViewById(R.id.revoked);
+                ImageView verified = (ImageView) view.findViewById(R.id.verified);
+
+                if (cursor.getInt(KeyListFragment.INDEX_HAS_SECRET) != 0) {
+                    // this is a secret key - show the edit button
+                    statusDivider.setVisibility(View.VISIBLE);
+                    statusLayout.setVisibility(View.VISIBLE);
+                    revoked.setVisibility(View.GONE);
+                    verified.setVisibility(View.GONE);
+                    button.setVisibility(View.VISIBLE);
+
+                    final long id = cursor.getLong(INDEX_MASTER_KEY_ID);
+                    button.setOnClickListener(new OnClickListener() {
+                        public void onClick(View view) {
+                            Intent editIntent = new Intent(getActivity(), EditKeyActivity.class);
+                            editIntent.setData(KeyRingData.buildSecretKeyRingUri(Long.toString(id)));
+                            editIntent.setAction(EditKeyActivity.ACTION_EDIT_KEY);
+                            startActivityForResult(editIntent, 0);
+                        }
+                    });
+                } else {
+                    // this is a public key - hide the edit button, show if it's revoked
+                    statusDivider.setVisibility(View.GONE);
+                    button.setVisibility(View.GONE);
+
+                    boolean isRevoked = cursor.getInt(INDEX_IS_REVOKED) > 0;
+                    if(isRevoked) {
+                        statusLayout.setVisibility(isRevoked ? View.VISIBLE : View.GONE);
+                        revoked.setVisibility(isRevoked ? View.VISIBLE : View.GONE);
+                        verified.setVisibility(View.GONE);
+                    } else {
+                        boolean isVerified = cursor.getInt(INDEX_VERIFIED) > 0;
+                        statusLayout.setVisibility(isVerified ? View.VISIBLE : View.GONE);
+                        revoked.setVisibility(View.GONE);
+                        verified.setVisibility(isVerified ? View.VISIBLE : View.GONE);
+                    }
+                }
+            }
+
+        }
+
+        public boolean isSecretAvailable(int id) {
+            if (!mCursor.moveToPosition(id)) {
+                throw new IllegalStateException("couldn't move cursor to position " + id);
+            }
+
+            return mCursor.getInt(INDEX_HAS_SECRET) != 0;
+        }
+        public long getMasterKeyId(int id) {
+            if (!mCursor.moveToPosition(id)) {
+                throw new IllegalStateException("couldn't move cursor to position " + id);
+            }
+
+            return mCursor.getLong(INDEX_MASTER_KEY_ID);
+        }
+
+        @Override
+        public View newView(Context context, Cursor cursor, ViewGroup parent) {
+            return mInflater.inflate(R.layout.key_list_item, parent, false);
+        }
+
+        /**
+         * Creates a new header view and binds the section headers to it. It uses the ViewHolder
+         * pattern. Most functionality is similar to getView() from Android's CursorAdapter.
+         * <p/>
+         * NOTE: The variables mDataValid and mCursor are available due to the super class
+         * CursorAdapter.
+         */
+        @Override
+        public View getHeaderView(int position, View convertView, ViewGroup parent) {
+            HeaderViewHolder holder;
+            if (convertView == null) {
+                holder = new HeaderViewHolder();
+                convertView = mInflater.inflate(R.layout.key_list_header, parent, false);
+                holder.mText = (TextView) convertView.findViewById(R.id.stickylist_header_text);
+                holder.mCount = (TextView) convertView.findViewById(R.id.contacts_num);
+                convertView.setTag(holder);
+            } else {
+                holder = (HeaderViewHolder) convertView.getTag();
+            }
+
+            if (!mDataValid) {
+                // no data available at this point
+                Log.d(Constants.TAG, "getHeaderView: No data available at this point!");
+                return convertView;
+            }
+
+            if (!mCursor.moveToPosition(position)) {
+                throw new IllegalStateException("couldn't move cursor to position " + position);
+            }
+
+            if (mCursor.getInt(KeyListFragment.INDEX_HAS_SECRET) != 0) {
+                { // set contact count
+                    int num = mCursor.getCount();
+                    String contactsTotal = getResources().getQuantityString(R.plurals.n_contacts, num, num);
+                    holder.mCount.setText(contactsTotal);
+                    holder.mCount.setVisibility(View.VISIBLE);
+                }
+
+                holder.mText.setText(convertView.getResources().getString(R.string.my_keys));
+                return convertView;
+            }
+
+            // set header text as first char in user id
+            String userId = mCursor.getString(KeyListFragment.INDEX_USER_ID);
+            String headerText = convertView.getResources().getString(R.string.user_id_no_name);
+            if (userId != null && userId.length() > 0) {
+                headerText = "" + userId.subSequence(0, 1).charAt(0);
+            }
+            holder.mText.setText(headerText);
+            holder.mCount.setVisibility(View.GONE);
+            return convertView;
+        }
+
+        /**
+         * Header IDs should be static, position=1 should always return the same Id that is.
+         */
+        @Override
+        public long getHeaderId(int position) {
+            if (!mDataValid) {
+                // no data available at this point
+                Log.d(Constants.TAG, "getHeaderView: No data available at this point!");
+                return -1;
+            }
+
+            if (!mCursor.moveToPosition(position)) {
+                throw new IllegalStateException("couldn't move cursor to position " + position);
+            }
+
+            // early breakout: all secret keys are assigned id 0
+            if (mCursor.getInt(KeyListFragment.INDEX_HAS_SECRET) != 0) {
+                return 1L;
+            }
+            // otherwise, return the first character of the name as ID
+            String userId = mCursor.getString(KeyListFragment.INDEX_USER_ID);
+            if (userId != null && userId.length() > 0) {
+                return userId.charAt(0);
+            } else {
+                return Long.MAX_VALUE;
+            }
+        }
+
+        class HeaderViewHolder {
+            TextView mText;
+            TextView mCount;
+        }
+
+        /**
+         * -------------------------- MULTI-SELECTION METHODS --------------
+         */
+        public void setNewSelection(int position, boolean value) {
+            mSelection.put(position, value);
+            notifyDataSetChanged();
+        }
+
+        public boolean isAnySecretSelected() {
+            for (int pos : mSelection.keySet()) {
+                if(mAdapter.isSecretAvailable(pos))
+                    return true;
+            }
+            return false;
+        }
+
+        public long[] getCurrentSelectedMasterKeyIds() {
+            long[] ids = new long[mSelection.size()];
+            int i = 0;
+            // get master key ids
+            for (int pos : mSelection.keySet()) {
+                ids[i++] = mAdapter.getMasterKeyId(pos);
+            }
+            return ids;
+        }
+
+        public void removeSelection(int position) {
+            mSelection.remove(position);
+            notifyDataSetChanged();
+        }
+
+        public void clearSelection() {
+            mSelection.clear();
+            notifyDataSetChanged();
+        }
+
+        @Override
+        public View getView(int position, View convertView, ViewGroup parent) {
+            // let the adapter handle setting up the row views
+            View v = super.getView(position, convertView, parent);
+
+            /**
+             * Change color for multi-selection
+             */
+            if (mSelection.get(position) != null) {
+                // selected position color
+                v.setBackgroundColor(parent.getResources().getColor(R.color.emphasis));
+            } else {
+                // default color
+                v.setBackgroundColor(Color.TRANSPARENT);
+            }
+
+            return v;
+        }
+
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/PreferencesActivity.java

@@ -0,0 +1,387 @@
+/*
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.annotation.SuppressLint;
+import android.content.Intent;
+import android.os.Build;
+import android.os.Bundle;
+import android.preference.CheckBoxPreference;
+import android.preference.Preference;
+import android.preference.PreferenceActivity;
+import android.preference.PreferenceFragment;
+import android.preference.PreferenceScreen;
+
+import org.spongycastle.bcpg.HashAlgorithmTags;
+import org.spongycastle.openpgp.PGPEncryptedData;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.Preferences;
+import org.sufficientlysecure.keychain.ui.widget.IntegerListPreference;
+
+import java.util.List;
+
+@SuppressLint("NewApi")
+public class PreferencesActivity extends PreferenceActivity {
+
+    public static final String ACTION_PREFS_GEN = "org.sufficientlysecure.keychain.ui.PREFS_GEN";
+    public static final String ACTION_PREFS_ADV = "org.sufficientlysecure.keychain.ui.PREFS_ADV";
+
+    private PreferenceScreen mKeyServerPreference = null;
+    private static Preferences sPreferences;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        sPreferences = Preferences.getPreferences(this);
+        super.onCreate(savedInstanceState);
+
+//        final ActionBar actionBar = getSupportActionBar();
+//        actionBar.setDisplayShowTitleEnabled(true);
+//        actionBar.setDisplayHomeAsUpEnabled(false);
+//        actionBar.setHomeButtonEnabled(false);
+
+        String action = getIntent().getAction();
+
+        if (action != null && action.equals(ACTION_PREFS_GEN)) {
+            addPreferencesFromResource(R.xml.gen_preferences);
+
+            initializePassPassphraceCacheTtl(
+                    (IntegerListPreference) findPreference(Constants.Pref.PASSPHRASE_CACHE_TTL));
+
+            mKeyServerPreference = (PreferenceScreen) findPreference(Constants.Pref.KEY_SERVERS);
+            String servers[] = sPreferences.getKeyServers();
+            mKeyServerPreference.setSummary(getResources().getQuantityString(R.plurals.n_key_servers,
+                    servers.length, servers.length));
+            mKeyServerPreference
+                    .setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
+                        public boolean onPreferenceClick(Preference preference) {
+                            Intent intent = new Intent(PreferencesActivity.this,
+                                    PreferencesKeyServerActivity.class);
+                            intent.putExtra(PreferencesKeyServerActivity.EXTRA_KEY_SERVERS,
+                                    sPreferences.getKeyServers());
+                            startActivityForResult(intent, Id.request.key_server_preference);
+                            return false;
+                        }
+                    });
+
+        } else if (action != null && action.equals(ACTION_PREFS_ADV)) {
+            addPreferencesFromResource(R.xml.adv_preferences);
+
+            initializeEncryptionAlgorithm(
+                    (IntegerListPreference) findPreference(Constants.Pref.DEFAULT_ENCRYPTION_ALGORITHM));
+
+            int[] valueIds = new int[]{Id.choice.compression.none, Id.choice.compression.zip,
+                    Id.choice.compression.zlib, Id.choice.compression.bzip2, };
+            String[] entries = new String[]{
+                    getString(R.string.choice_none) + " (" + getString(R.string.compression_fast) + ")",
+                    "ZIP (" + getString(R.string.compression_fast) + ")",
+                    "ZLIB (" + getString(R.string.compression_fast) + ")",
+                    "BZIP2 (" + getString(R.string.compression_very_slow) + ")", };
+            String[] values = new String[valueIds.length];
+            for (int i = 0; i < values.length; ++i) {
+                values[i] = "" + valueIds[i];
+            }
+
+            initializeHashAlgorithm(
+                    (IntegerListPreference) findPreference(Constants.Pref.DEFAULT_HASH_ALGORITHM),
+                    valueIds, entries, values);
+
+            initializeMessageCompression(
+                    (IntegerListPreference) findPreference(Constants.Pref.DEFAULT_MESSAGE_COMPRESSION),
+                    valueIds, entries, values);
+
+            initializeFileCompression(
+                    (IntegerListPreference) findPreference(Constants.Pref.DEFAULT_FILE_COMPRESSION),
+                    entries, values);
+
+            initializeAsciiArmor(
+                    (CheckBoxPreference) findPreference(Constants.Pref.DEFAULT_ASCII_ARMOR));
+
+            initializeForceV3Signatures(
+                    (CheckBoxPreference) findPreference(Constants.Pref.FORCE_V3_SIGNATURES));
+
+        } else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
+            // Load the legacy preferences headers
+            addPreferencesFromResource(R.xml.preference_headers_legacy);
+        }
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode) {
+            case Id.request.key_server_preference: {
+                if (resultCode == RESULT_CANCELED || data == null) {
+                    return;
+                }
+                String servers[] = data
+                        .getStringArrayExtra(PreferencesKeyServerActivity.EXTRA_KEY_SERVERS);
+                sPreferences.setKeyServers(servers);
+                mKeyServerPreference.setSummary(getResources().getQuantityString(
+                        R.plurals.n_key_servers, servers.length, servers.length));
+                break;
+            }
+
+            default: {
+                super.onActivityResult(requestCode, resultCode, data);
+                break;
+            }
+        }
+    }
+
+    /* Called only on Honeycomb and later */
+    @Override
+    public void onBuildHeaders(List<Header> target) {
+        super.onBuildHeaders(target);
+        loadHeadersFromResource(R.xml.preference_headers, target);
+    }
+
+    /**
+     * This fragment shows the general preferences in android 3.0+
+     */
+    public static class GeneralPrefsFragment extends PreferenceFragment {
+
+        private PreferenceScreen mKeyServerPreference = null;
+
+        @Override
+        public void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+
+            // Load the preferences from an XML resource
+            addPreferencesFromResource(R.xml.gen_preferences);
+
+            initializePassPassphraceCacheTtl(
+                    (IntegerListPreference) findPreference(Constants.Pref.PASSPHRASE_CACHE_TTL));
+
+            mKeyServerPreference = (PreferenceScreen) findPreference(Constants.Pref.KEY_SERVERS);
+            String servers[] = sPreferences.getKeyServers();
+            mKeyServerPreference.setSummary(getResources().getQuantityString(R.plurals.n_key_servers,
+                    servers.length, servers.length));
+            mKeyServerPreference
+                    .setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
+                        public boolean onPreferenceClick(Preference preference) {
+                            Intent intent = new Intent(getActivity(),
+                                    PreferencesKeyServerActivity.class);
+                            intent.putExtra(PreferencesKeyServerActivity.EXTRA_KEY_SERVERS,
+                                    sPreferences.getKeyServers());
+                            startActivityForResult(intent, Id.request.key_server_preference);
+                            return false;
+                        }
+                    });
+        }
+
+        @Override
+        public void onActivityResult(int requestCode, int resultCode, Intent data) {
+            switch (requestCode) {
+                case Id.request.key_server_preference: {
+                    if (resultCode == RESULT_CANCELED || data == null) {
+                        return;
+                    }
+                    String servers[] = data
+                            .getStringArrayExtra(PreferencesKeyServerActivity.EXTRA_KEY_SERVERS);
+                    sPreferences.setKeyServers(servers);
+                    mKeyServerPreference.setSummary(getResources().getQuantityString(
+                            R.plurals.n_key_servers, servers.length, servers.length));
+                    break;
+                }
+
+                default: {
+                    super.onActivityResult(requestCode, resultCode, data);
+                    break;
+                }
+            }
+        }
+    }
+
+    /**
+     * This fragment shows the advanced preferences in android 3.0+
+     */
+    public static class AdvancedPrefsFragment extends PreferenceFragment {
+
+        @Override
+        public void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+
+            // Load the preferences from an XML resource
+            addPreferencesFromResource(R.xml.adv_preferences);
+
+            initializeEncryptionAlgorithm(
+                    (IntegerListPreference) findPreference(Constants.Pref.DEFAULT_ENCRYPTION_ALGORITHM));
+
+            int[] valueIds = new int[]{Id.choice.compression.none, Id.choice.compression.zip,
+                    Id.choice.compression.zlib, Id.choice.compression.bzip2, };
+            String[] entries = new String[]{
+                    getString(R.string.choice_none) + " (" + getString(R.string.compression_fast) + ")",
+                    "ZIP (" + getString(R.string.compression_fast) + ")",
+                    "ZLIB (" + getString(R.string.compression_fast) + ")",
+                    "BZIP2 (" + getString(R.string.compression_very_slow) + ")", };
+            String[] values = new String[valueIds.length];
+            for (int i = 0; i < values.length; ++i) {
+                values[i] = "" + valueIds[i];
+            }
+
+            initializeHashAlgorithm(
+                    (IntegerListPreference) findPreference(Constants.Pref.DEFAULT_HASH_ALGORITHM),
+                    valueIds, entries, values);
+
+            initializeMessageCompression(
+                    (IntegerListPreference) findPreference(Constants.Pref.DEFAULT_MESSAGE_COMPRESSION),
+                    valueIds, entries, values);
+
+            initializeFileCompression(
+                    (IntegerListPreference) findPreference(Constants.Pref.DEFAULT_FILE_COMPRESSION),
+                    entries, values);
+
+            initializeAsciiArmor(
+                    (CheckBoxPreference) findPreference(Constants.Pref.DEFAULT_ASCII_ARMOR));
+
+            initializeForceV3Signatures(
+                    (CheckBoxPreference) findPreference(Constants.Pref.FORCE_V3_SIGNATURES));
+        }
+    }
+
+    protected boolean isValidFragment(String fragmentName) {
+        return AdvancedPrefsFragment.class.getName().equals(fragmentName)
+                || GeneralPrefsFragment.class.getName().equals(fragmentName)
+                || super.isValidFragment(fragmentName);
+    }
+
+    private static void initializePassPassphraceCacheTtl(final IntegerListPreference mPassphraseCacheTtl) {
+        mPassphraseCacheTtl.setValue("" + sPreferences.getPassphraseCacheTtl());
+        mPassphraseCacheTtl.setSummary(mPassphraseCacheTtl.getEntry());
+        mPassphraseCacheTtl
+                .setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+                    public boolean onPreferenceChange(Preference preference, Object newValue) {
+                        mPassphraseCacheTtl.setValue(newValue.toString());
+                        mPassphraseCacheTtl.setSummary(mPassphraseCacheTtl.getEntry());
+                        sPreferences.setPassphraseCacheTtl(Integer.parseInt(newValue.toString()));
+                        return false;
+                    }
+                });
+    }
+
+    private static void initializeEncryptionAlgorithm(final IntegerListPreference mEncryptionAlgorithm) {
+        int valueIds[] = {PGPEncryptedData.AES_128, PGPEncryptedData.AES_192,
+                PGPEncryptedData.AES_256, PGPEncryptedData.BLOWFISH, PGPEncryptedData.TWOFISH,
+                PGPEncryptedData.CAST5, PGPEncryptedData.DES, PGPEncryptedData.TRIPLE_DES,
+                PGPEncryptedData.IDEA, };
+        String entries[] = {"AES-128", "AES-192", "AES-256", "Blowfish", "Twofish", "CAST5",
+                "DES", "Triple DES", "IDEA", };
+        String values[] = new String[valueIds.length];
+        for (int i = 0; i < values.length; ++i) {
+            values[i] = "" + valueIds[i];
+        }
+        mEncryptionAlgorithm.setEntries(entries);
+        mEncryptionAlgorithm.setEntryValues(values);
+        mEncryptionAlgorithm.setValue("" + sPreferences.getDefaultEncryptionAlgorithm());
+        mEncryptionAlgorithm.setSummary(mEncryptionAlgorithm.getEntry());
+        mEncryptionAlgorithm
+                .setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+                    public boolean onPreferenceChange(Preference preference, Object newValue) {
+                        mEncryptionAlgorithm.setValue(newValue.toString());
+                        mEncryptionAlgorithm.setSummary(mEncryptionAlgorithm.getEntry());
+                        sPreferences.setDefaultEncryptionAlgorithm(Integer.parseInt(newValue
+                                .toString()));
+                        return false;
+                    }
+                });
+    }
+
+    private static void initializeHashAlgorithm
+            (final IntegerListPreference mHashAlgorithm, int[] valueIds, String[] entries, String[] values) {
+        valueIds = new int[]{HashAlgorithmTags.MD5, HashAlgorithmTags.RIPEMD160,
+                HashAlgorithmTags.SHA1, HashAlgorithmTags.SHA224, HashAlgorithmTags.SHA256,
+                HashAlgorithmTags.SHA384, HashAlgorithmTags.SHA512, };
+        entries = new String[]{"MD5", "RIPEMD-160", "SHA-1", "SHA-224", "SHA-256", "SHA-384",
+                "SHA-512", };
+        values = new String[valueIds.length];
+        for (int i = 0; i < values.length; ++i) {
+            values[i] = "" + valueIds[i];
+        }
+        mHashAlgorithm.setEntries(entries);
+        mHashAlgorithm.setEntryValues(values);
+        mHashAlgorithm.setValue("" + sPreferences.getDefaultHashAlgorithm());
+        mHashAlgorithm.setSummary(mHashAlgorithm.getEntry());
+        mHashAlgorithm.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+            public boolean onPreferenceChange(Preference preference, Object newValue) {
+                mHashAlgorithm.setValue(newValue.toString());
+                mHashAlgorithm.setSummary(mHashAlgorithm.getEntry());
+                sPreferences.setDefaultHashAlgorithm(Integer.parseInt(newValue.toString()));
+                return false;
+            }
+        });
+    }
+
+    private static void initializeMessageCompression(
+            final IntegerListPreference mMessageCompression,
+            int[] valueIds, String[] entries, String[] values) {
+        mMessageCompression.setEntries(entries);
+        mMessageCompression.setEntryValues(values);
+        mMessageCompression.setValue("" + sPreferences.getDefaultMessageCompression());
+        mMessageCompression.setSummary(mMessageCompression.getEntry());
+        mMessageCompression
+                .setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+                    public boolean onPreferenceChange(Preference preference, Object newValue) {
+                        mMessageCompression.setValue(newValue.toString());
+                        mMessageCompression.setSummary(mMessageCompression.getEntry());
+                        sPreferences.setDefaultMessageCompression(Integer.parseInt(newValue
+                                .toString()));
+                        return false;
+                    }
+                });
+    }
+
+    private static void initializeFileCompression
+            (final IntegerListPreference mFileCompression, String[] entries, String[] values) {
+        mFileCompression.setEntries(entries);
+        mFileCompression.setEntryValues(values);
+        mFileCompression.setValue("" + sPreferences.getDefaultFileCompression());
+        mFileCompression.setSummary(mFileCompression.getEntry());
+        mFileCompression.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+            public boolean onPreferenceChange(Preference preference, Object newValue) {
+                mFileCompression.setValue(newValue.toString());
+                mFileCompression.setSummary(mFileCompression.getEntry());
+                sPreferences.setDefaultFileCompression(Integer.parseInt(newValue.toString()));
+                return false;
+            }
+        });
+    }
+
+    private static void initializeAsciiArmor(final CheckBoxPreference mAsciiArmor) {
+        mAsciiArmor.setChecked(sPreferences.getDefaultAsciiArmor());
+        mAsciiArmor.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+            public boolean onPreferenceChange(Preference preference, Object newValue) {
+                mAsciiArmor.setChecked((Boolean) newValue);
+                sPreferences.setDefaultAsciiArmor((Boolean) newValue);
+                return false;
+            }
+        });
+    }
+
+    private static void initializeForceV3Signatures(final CheckBoxPreference mForceV3Signatures) {
+        mForceV3Signatures.setChecked(sPreferences.getForceV3Signatures());
+        mForceV3Signatures
+                .setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+                    public boolean onPreferenceChange(Preference preference, Object newValue) {
+                        mForceV3Signatures.setChecked((Boolean) newValue);
+                        sPreferences.setForceV3Signatures((Boolean) newValue);
+                        return false;
+                    }
+                });
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/PreferencesKeyServerActivity.java

@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.v7.app.ActionBarActivity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.TextView;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.ActionBarHelper;
+import org.sufficientlysecure.keychain.ui.widget.Editor;
+import org.sufficientlysecure.keychain.ui.widget.Editor.EditorListener;
+import org.sufficientlysecure.keychain.ui.widget.KeyServerEditor;
+
+import java.util.Vector;
+
+public class PreferencesKeyServerActivity extends ActionBarActivity implements OnClickListener,
+        EditorListener {
+
+    public static final String EXTRA_KEY_SERVERS = "key_servers";
+
+    private LayoutInflater mInflater;
+    private ViewGroup mEditors;
+    private View mAdd;
+    private TextView mTitle;
+    private TextView mSummary;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        // Inflate a "Done"/"Cancel" custom action bar view
+        ActionBarHelper.setTwoButtonView(getSupportActionBar(), R.string.btn_okay, R.drawable.ic_action_done,
+                new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        // ok
+                        okClicked();
+                    }
+                }, R.string.btn_do_not_save, R.drawable.ic_action_cancel, new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        // cancel
+                        cancelClicked();
+                    }
+                }
+        );
+
+        setContentView(R.layout.key_server_preference);
+
+        mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+
+        mTitle = (TextView) findViewById(R.id.title);
+        mSummary = (TextView) findViewById(R.id.summary);
+
+        mTitle.setText(R.string.label_key_servers);
+
+        mEditors = (ViewGroup) findViewById(R.id.editors);
+        mAdd = findViewById(R.id.add);
+        mAdd.setOnClickListener(this);
+
+        Intent intent = getIntent();
+        String servers[] = intent.getStringArrayExtra(EXTRA_KEY_SERVERS);
+        if (servers != null) {
+            for (String serv : servers) {
+                KeyServerEditor view = (KeyServerEditor) mInflater.inflate(
+                        R.layout.key_server_editor, mEditors, false);
+                view.setEditorListener(this);
+                view.setValue(serv);
+                mEditors.addView(view);
+            }
+        }
+    }
+
+    public void onDeleted(Editor editor, boolean wasNewItem) {
+        // nothing to do
+    }
+
+    @Override
+    public void onEdited() {
+
+    }
+
+    public void onClick(View v) {
+        KeyServerEditor view = (KeyServerEditor) mInflater.inflate(R.layout.key_server_editor,
+                mEditors, false);
+        view.setEditorListener(this);
+        mEditors.addView(view);
+    }
+
+    private void cancelClicked() {
+        setResult(RESULT_CANCELED, null);
+        finish();
+    }
+
+    private void okClicked() {
+        Intent data = new Intent();
+        Vector<String> servers = new Vector<String>();
+        for (int i = 0; i < mEditors.getChildCount(); ++i) {
+            KeyServerEditor editor = (KeyServerEditor) mEditors.getChildAt(i);
+            String tmp = editor.getValue();
+            if (tmp.length() > 0) {
+                servers.add(tmp);
+            }
+        }
+        String[] dummy = new String[0];
+        data.putExtra(EXTRA_KEY_SERVERS, servers.toArray(dummy));
+        setResult(RESULT_OK, data);
+        finish();
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SelectPublicKeyActivity.java

@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2012 Dominik Schürmann <dominik@dominikschuermann.de>
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.v7.app.ActionBarActivity;
+import android.view.View;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.ActionBarHelper;
+
+public class SelectPublicKeyActivity extends ActionBarActivity {
+
+    // Actions for internal use only:
+    public static final String ACTION_SELECT_PUBLIC_KEYS = Constants.INTENT_PREFIX
+            + "SELECT_PUBLIC_KEYRINGS";
+
+    public static final String EXTRA_SELECTED_MASTER_KEY_IDS = "master_key_ids";
+
+    public static final String RESULT_EXTRA_MASTER_KEY_IDS = "master_key_ids";
+    public static final String RESULT_EXTRA_USER_IDS = "user_ids";
+
+    SelectPublicKeyFragment mSelectFragment;
+
+    long mSelectedMasterKeyIds[];
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        // Inflate a "Done"/"Cancel" custom action bar view
+        ActionBarHelper.setTwoButtonView(getSupportActionBar(), R.string.btn_okay, R.drawable.ic_action_done,
+                new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        // ok
+                        okClicked();
+                    }
+                }, R.string.btn_do_not_save, R.drawable.ic_action_cancel, new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        // cancel
+                        cancelClicked();
+                    }
+                }
+        );
+
+        setContentView(R.layout.select_public_key_activity);
+
+        setDefaultKeyMode(DEFAULT_KEYS_SEARCH_LOCAL);
+
+        handleIntent(getIntent());
+
+        // Check that the activity is using the layout version with
+        // the fragment_container FrameLayout
+        if (findViewById(R.id.select_public_key_fragment_container) != null) {
+
+            // However, if we're being restored from a previous state,
+            // then we don't need to do anything and should return or else
+            // we could end up with overlapping fragments.
+            if (savedInstanceState != null) {
+                return;
+            }
+
+            // Create an instance of the fragment
+            mSelectFragment = SelectPublicKeyFragment.newInstance(mSelectedMasterKeyIds);
+
+            // Add the fragment to the 'fragment_container' FrameLayout
+            getSupportFragmentManager().beginTransaction()
+                    .add(R.id.select_public_key_fragment_container, mSelectFragment).commit();
+        }
+
+        // TODO: reimplement!
+        // mFilterLayout = findViewById(R.id.layout_filter);
+        // mFilterInfo = (TextView) mFilterLayout.findViewById(R.id.filterInfo);
+        // mClearFilterButton = (Button) mFilterLayout.findViewById(R.id.btn_clear);
+        //
+        // mClearFilterButton.setOnClickListener(new OnClickListener() {
+        // public void onClick(View v) {
+        // handleIntent(new Intent());
+        // }
+        // });
+
+    }
+
+    @Override
+    protected void onNewIntent(Intent intent) {
+        super.onNewIntent(intent);
+        handleIntent(intent);
+    }
+
+    private void handleIntent(Intent intent) {
+        // TODO: reimplement search!
+
+        // String searchString = null;
+        // if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
+        // searchString = intent.getStringExtra(SearchManager.QUERY);
+        // if (searchString != null && searchString.trim().length() == 0) {
+        // searchString = null;
+        // }
+        // }
+
+        // if (searchString == null) {
+        // mFilterLayout.setVisibility(View.GONE);
+        // } else {
+        // mFilterLayout.setVisibility(View.VISIBLE);
+        // mFilterInfo.setText(getString(R.string.filterInfo, searchString));
+        // }
+
+        // preselected master keys
+        mSelectedMasterKeyIds = intent.getLongArrayExtra(EXTRA_SELECTED_MASTER_KEY_IDS);
+    }
+
+    private void cancelClicked() {
+        setResult(RESULT_CANCELED, null);
+        finish();
+    }
+
+    private void okClicked() {
+        Intent data = new Intent();
+        data.putExtra(RESULT_EXTRA_MASTER_KEY_IDS, mSelectFragment.getSelectedMasterKeyIds());
+        data.putExtra(RESULT_EXTRA_USER_IDS, mSelectFragment.getSelectedUserIds());
+        setResult(RESULT_OK, data);
+        finish();
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SelectPublicKeyFragment.java

@@ -0,0 +1,350 @@
+/*
+ * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.database.DatabaseUtils;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.content.CursorLoader;
+import android.support.v4.content.Loader;
+import android.text.Editable;
+import android.text.TextUtils;
+import android.text.TextWatcher;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.EditText;
+import android.widget.FrameLayout;
+import android.widget.LinearLayout;
+import android.widget.ListView;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.compatibility.ListFragmentWorkaround;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
+import org.sufficientlysecure.keychain.provider.KeychainContract.Keys;
+import org.sufficientlysecure.keychain.provider.KeychainContract.UserIds;
+import org.sufficientlysecure.keychain.provider.KeychainDatabase;
+import org.sufficientlysecure.keychain.provider.KeychainDatabase.Tables;
+import org.sufficientlysecure.keychain.ui.adapter.SelectKeyCursorAdapter;
+
+import java.util.Date;
+import java.util.Vector;
+
+public class SelectPublicKeyFragment extends ListFragmentWorkaround implements TextWatcher,
+        LoaderManager.LoaderCallbacks<Cursor> {
+    public static final String ARG_PRESELECTED_KEY_IDS = "preselected_key_ids";
+
+    private SelectKeyCursorAdapter mAdapter;
+    private EditText mSearchView;
+    private long mSelectedMasterKeyIds[];
+    private String mCurQuery;
+
+    // copied from ListFragment
+    static final int INTERNAL_EMPTY_ID = 0x00ff0001;
+    static final int INTERNAL_PROGRESS_CONTAINER_ID = 0x00ff0002;
+    static final int INTERNAL_LIST_CONTAINER_ID = 0x00ff0003;
+    // added for search view
+    static final int SEARCH_ID = 0x00ff0004;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static SelectPublicKeyFragment newInstance(long[] preselectedKeyIds) {
+        SelectPublicKeyFragment frag = new SelectPublicKeyFragment();
+        Bundle args = new Bundle();
+
+        args.putLongArray(ARG_PRESELECTED_KEY_IDS, preselectedKeyIds);
+
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mSelectedMasterKeyIds = getArguments().getLongArray(ARG_PRESELECTED_KEY_IDS);
+    }
+
+    /**
+     * Copied from ListFragment and added EditText for search on top of list.
+     * We do not use a custom layout here, because this breaks the progress bar functionality
+     * of ListFragment.
+     *
+     * @param inflater
+     * @param container
+     * @param savedInstanceState
+     * @return
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        final Context context = getActivity();
+
+        FrameLayout root = new FrameLayout(context);
+
+        // ------------------------------------------------------------------
+
+        LinearLayout pframe = new LinearLayout(context);
+        pframe.setId(INTERNAL_PROGRESS_CONTAINER_ID);
+        pframe.setOrientation(LinearLayout.VERTICAL);
+        pframe.setVisibility(View.GONE);
+        pframe.setGravity(Gravity.CENTER);
+
+        ProgressBar progress = new ProgressBar(context, null,
+                android.R.attr.progressBarStyleLarge);
+        pframe.addView(progress, new FrameLayout.LayoutParams(
+                ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
+
+        root.addView(pframe, new FrameLayout.LayoutParams(
+                ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
+
+        // ------------------------------------------------------------------
+
+        FrameLayout lframe = new FrameLayout(context);
+        lframe.setId(INTERNAL_LIST_CONTAINER_ID);
+
+        TextView tv = new TextView(getActivity());
+        tv.setId(INTERNAL_EMPTY_ID);
+        tv.setGravity(Gravity.CENTER);
+        lframe.addView(tv, new FrameLayout.LayoutParams(
+                ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
+
+        // Added for search view: linearLayout, mSearchView
+        LinearLayout linearLayout = new LinearLayout(context);
+        linearLayout.setOrientation(LinearLayout.VERTICAL);
+
+        mSearchView = new EditText(context);
+        mSearchView.setId(SEARCH_ID);
+        mSearchView.setHint(R.string.menu_search);
+        mSearchView.setCompoundDrawablesWithIntrinsicBounds(
+                getResources().getDrawable(R.drawable.ic_action_search), null, null, null);
+
+        linearLayout.addView(mSearchView, new FrameLayout.LayoutParams(
+                ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
+
+        ListView lv = new ListView(getActivity());
+        lv.setId(android.R.id.list);
+        lv.setDrawSelectorOnTop(false);
+        linearLayout.addView(lv, new FrameLayout.LayoutParams(
+                ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
+
+        lframe.addView(linearLayout, new FrameLayout.LayoutParams(
+                ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
+
+        root.addView(lframe, new FrameLayout.LayoutParams(
+                ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
+
+        // ------------------------------------------------------------------
+
+        root.setLayoutParams(new FrameLayout.LayoutParams(
+                ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
+
+        return root;
+    }
+
+    /**
+     * Define Adapter and Loader on create of Activity
+     */
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        getListView().setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
+
+        // Give some text to display if there is no data. In a real
+        // application this would come from a resource.
+        setEmptyText(getString(R.string.list_empty));
+
+        mSearchView.addTextChangedListener(this);
+
+        mAdapter = new SelectKeyCursorAdapter(getActivity(), null, 0, getListView(), Id.type.public_key);
+
+        setListAdapter(mAdapter);
+
+        // Start out with a progress indicator.
+        setListShown(false);
+
+        // Prepare the loader. Either re-connect with an existing one,
+        // or start a new one.
+        getLoaderManager().initLoader(0, null, this);
+    }
+
+    /**
+     * Selects items based on master key ids in list view
+     *
+     * @param masterKeyIds
+     */
+    private void preselectMasterKeyIds(long[] masterKeyIds) {
+        if (masterKeyIds != null) {
+            for (int i = 0; i < getListView().getCount(); ++i) {
+                long keyId = mAdapter.getMasterKeyId(i);
+                for (long masterKeyId : masterKeyIds) {
+                    if (keyId == masterKeyId) {
+                        getListView().setItemChecked(i, true);
+                        break;
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Returns all selected master key ids
+     *
+     * @return
+     */
+    public long[] getSelectedMasterKeyIds() {
+        // mListView.getCheckedItemIds() would give the row ids of the KeyRings not the master key
+        // ids!
+        Vector<Long> vector = new Vector<Long>();
+        for (int i = 0; i < getListView().getCount(); ++i) {
+            if (getListView().isItemChecked(i)) {
+                vector.add(mAdapter.getMasterKeyId(i));
+            }
+        }
+
+        // convert to long array
+        long[] selectedMasterKeyIds = new long[vector.size()];
+        for (int i = 0; i < vector.size(); ++i) {
+            selectedMasterKeyIds[i] = vector.get(i);
+        }
+
+        return selectedMasterKeyIds;
+    }
+
+    /**
+     * Returns all selected user ids
+     *
+     * @return
+     */
+    public String[] getSelectedUserIds() {
+        Vector<String> userIds = new Vector<String>();
+        for (int i = 0; i < getListView().getCount(); ++i) {
+            if (getListView().isItemChecked(i)) {
+                userIds.add((String) mAdapter.getUserId(i));
+            }
+        }
+
+        // make empty array to not return null
+        String userIdArray[] = new String[0];
+        return userIds.toArray(userIdArray);
+    }
+
+    @Override
+    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        Uri baseUri = KeyRings.buildUnifiedKeyRingsUri();
+
+        // These are the rows that we will retrieve.
+        long now = new Date().getTime() / 1000;
+        String[] projection = new String[]{
+                KeyRings._ID,
+                KeyRings.MASTER_KEY_ID,
+                UserIds.USER_ID,
+                "(SELECT COUNT(*) FROM " + Tables.KEYS + " AS k"
+                        +" WHERE k." + Keys.MASTER_KEY_ID + " = "
+                            + KeychainDatabase.Tables.KEYS + "." + Keys.MASTER_KEY_ID
+                            + " AND k." + Keys.IS_REVOKED + " = '0'"
+                            + " AND k." + Keys.CAN_ENCRYPT + " = '1'"
+                        + ") AS " + SelectKeyCursorAdapter.PROJECTION_ROW_AVAILABLE,
+                "(SELECT COUNT(*) FROM " + Tables.KEYS + " AS k"
+                        + " WHERE k." + Keys.MASTER_KEY_ID + " = "
+                            + KeychainDatabase.Tables.KEYS + "." + Keys.MASTER_KEY_ID
+                            + " AND k." + Keys.IS_REVOKED + " = '0'"
+                            + " AND k." + Keys.CAN_ENCRYPT + " = '1'"
+                            + " AND k." + Keys.CREATION + " <= '" + now + "'"
+                            + " AND ( k." + Keys.EXPIRY + " IS NULL OR k." + Keys.EXPIRY + " >= '" + now + "' )"
+                        + ") AS " + SelectKeyCursorAdapter.PROJECTION_ROW_VALID, };
+
+        String inMasterKeyList = null;
+        if (mSelectedMasterKeyIds != null && mSelectedMasterKeyIds.length > 0) {
+            inMasterKeyList = Tables.KEYS + "." + KeyRings.MASTER_KEY_ID + " IN (";
+            for (int i = 0; i < mSelectedMasterKeyIds.length; ++i) {
+                if (i != 0) {
+                    inMasterKeyList += ", ";
+                }
+                inMasterKeyList += DatabaseUtils.sqlEscapeString("" + mSelectedMasterKeyIds[i]);
+            }
+            inMasterKeyList += ")";
+        }
+
+        String orderBy = UserIds.USER_ID + " ASC";
+        if (inMasterKeyList != null) {
+            // sort by selected master keys
+            orderBy = inMasterKeyList + " DESC, " + orderBy;
+        }
+        String where = null;
+        String whereArgs[] = null;
+        if (mCurQuery != null) {
+            where = UserIds.USER_ID + " LIKE ?";
+            whereArgs = new String[]{"%" + mCurQuery + "%"};
+        }
+
+        // Now create and return a CursorLoader that will take care of
+        // creating a Cursor for the data being displayed.
+        return new CursorLoader(getActivity(), baseUri, projection, where, whereArgs, orderBy);
+    }
+
+    @Override
+    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
+        // Swap the new cursor in. (The framework will take care of closing the
+        // old cursor once we return.)
+        mAdapter.setSearchQuery(mCurQuery);
+        mAdapter.swapCursor(data);
+
+        // The list should now be shown.
+        if (isResumed()) {
+            setListShown(true);
+        } else {
+            setListShownNoAnimation(true);
+        }
+
+        // preselect given master keys
+        preselectMasterKeyIds(mSelectedMasterKeyIds);
+    }
+
+    @Override
+    public void onLoaderReset(Loader<Cursor> loader) {
+        // This is called when the last Cursor provided to onLoadFinished()
+        // above is about to be closed. We need to make sure we are no
+        // longer using it.
+        mAdapter.swapCursor(null);
+    }
+
+    @Override
+    public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {
+
+    }
+
+    @Override
+    public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) {
+
+    }
+
+    @Override
+    public void afterTextChanged(Editable editable) {
+        mCurQuery = !TextUtils.isEmpty(editable.toString()) ? editable.toString() : null;
+        getLoaderManager().restartLoader(0, null, this);
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SelectSecretKeyActivity.java

@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.ActionBarActivity;
+
+import org.sufficientlysecure.keychain.R;
+
+public class SelectSecretKeyActivity extends ActionBarActivity {
+
+    public static final String EXTRA_FILTER_CERTIFY = "filter_certify";
+
+    public static final String RESULT_EXTRA_MASTER_KEY_ID = "master_key_id";
+
+    private boolean mFilterCertify;
+    private SelectSecretKeyFragment mSelectFragment;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.select_secret_key_activity);
+
+        final ActionBar actionBar = getSupportActionBar();
+        actionBar.setDisplayShowTitleEnabled(true);
+        actionBar.setDisplayHomeAsUpEnabled(false);
+        actionBar.setHomeButtonEnabled(false);
+
+        mFilterCertify = getIntent().getBooleanExtra(EXTRA_FILTER_CERTIFY, false);
+
+        // Check that the activity is using the layout version with
+        // the fragment_container FrameLayout
+        if (findViewById(R.id.select_secret_key_fragment_container) != null) {
+
+            // However, if we're being restored from a previous state,
+            // then we don't need to do anything and should return or else
+            // we could end up with overlapping fragments.
+            if (savedInstanceState != null) {
+                return;
+            }
+
+            // Create an instance of the fragment
+            mSelectFragment = SelectSecretKeyFragment.newInstance(mFilterCertify);
+
+            // Add the fragment to the 'fragment_container' FrameLayout
+            getSupportFragmentManager().beginTransaction()
+                    .add(R.id.select_secret_key_fragment_container, mSelectFragment).commit();
+        }
+    }
+
+    /**
+     * This is executed by SelectSecretKeyFragment after clicking on an item
+     *
+     * @param selectedUri
+     */
+    public void afterListSelection(Uri selectedUri) {
+        Intent data = new Intent();
+        data.setData(selectedUri);
+
+        setResult(RESULT_OK, data);
+        finish();
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SelectSecretKeyFragment.java

@@ -0,0 +1,176 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.app.ListFragment;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.content.CursorLoader;
+import android.support.v4.content.Loader;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.AdapterView.OnItemClickListener;
+import android.widget.ListView;
+
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
+import org.sufficientlysecure.keychain.provider.KeychainContract.Keys;
+import org.sufficientlysecure.keychain.provider.KeychainContract.UserIds;
+import org.sufficientlysecure.keychain.provider.KeychainDatabase;
+import org.sufficientlysecure.keychain.provider.KeychainDatabase.Tables;
+import org.sufficientlysecure.keychain.ui.adapter.SelectKeyCursorAdapter;
+
+import java.util.Date;
+
+public class SelectSecretKeyFragment extends ListFragment implements
+        LoaderManager.LoaderCallbacks<Cursor> {
+
+    private SelectSecretKeyActivity mActivity;
+    private SelectKeyCursorAdapter mAdapter;
+    private ListView mListView;
+
+    private boolean mFilterCertify;
+
+    private static final String ARG_FILTER_CERTIFY = "filter_certify";
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static SelectSecretKeyFragment newInstance(boolean filterCertify) {
+        SelectSecretKeyFragment frag = new SelectSecretKeyFragment();
+
+        Bundle args = new Bundle();
+        args.putBoolean(ARG_FILTER_CERTIFY, filterCertify);
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        mFilterCertify = getArguments().getBoolean(ARG_FILTER_CERTIFY);
+    }
+
+    /**
+     * Define Adapter and Loader on create of Activity
+     */
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mActivity = (SelectSecretKeyActivity) getActivity();
+        mListView = getListView();
+
+        mListView.setOnItemClickListener(new OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
+                long masterKeyId = mAdapter.getMasterKeyId(position);
+                Uri result = KeyRings.buildGenericKeyRingUri(String.valueOf(masterKeyId));
+
+                // return data to activity, which results in finishing it
+                mActivity.afterListSelection(result);
+            }
+        });
+
+        // Give some text to display if there is no data. In a real
+        // application this would come from a resource.
+        setEmptyText(getString(R.string.list_empty));
+
+        mAdapter = new SelectKeyCursorAdapter(mActivity, null, 0, mListView, Id.type.secret_key);
+
+        setListAdapter(mAdapter);
+
+        // Start out with a progress indicator.
+        setListShown(false);
+
+        // Prepare the loader. Either re-connect with an existing one,
+        // or start a new one.
+        getLoaderManager().initLoader(0, null, this);
+    }
+
+    @Override
+    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        // This is called when a new Loader needs to be created. This
+        // sample only has one Loader, so we don't care about the ID.
+        Uri baseUri = KeyRings.buildUnifiedKeyRingsUri();
+
+        // These are the rows that we will retrieve.
+        long now = new Date().getTime() / 1000;
+        String[] projection = new String[]{
+                KeyRings._ID,
+                KeyRings.MASTER_KEY_ID,
+                UserIds.USER_ID,
+                "(SELECT COUNT(*) FROM " + Tables.KEYS + " AS k"
+                    + " WHERE k." + Keys.MASTER_KEY_ID + " = "
+                        + KeychainDatabase.Tables.KEYS + "." + KeyRings.MASTER_KEY_ID
+                            + " AND k." + Keys.CAN_CERTIFY + " = '1'"
+                    + ") AS cert",
+                "(SELECT COUNT(*) FROM " + Tables.KEYS + " AS k"
+                    +" WHERE k." + Keys.MASTER_KEY_ID + " = "
+                        + KeychainDatabase.Tables.KEYS + "." + Keys.MASTER_KEY_ID
+                            + " AND k." + Keys.IS_REVOKED + " = '0'"
+                            + " AND k." + Keys.CAN_SIGN + " = '1'"
+                    + ") AS " + SelectKeyCursorAdapter.PROJECTION_ROW_AVAILABLE,
+                "(SELECT COUNT(*) FROM " + Tables.KEYS + " AS k"
+                    + " WHERE k." + Keys.MASTER_KEY_ID + " = "
+                        + KeychainDatabase.Tables.KEYS + "." + Keys.MASTER_KEY_ID
+                            + " AND k." + Keys.IS_REVOKED + " = '0'"
+                            + " AND k." + Keys.CAN_SIGN + " = '1'"
+                            + " AND k." + Keys.CREATION + " <= '" + now + "'"
+                            + " AND ( k." + Keys.EXPIRY + " IS NULL OR k." + Keys.EXPIRY + " >= '" + now + "' )"
+                    + ") AS " + SelectKeyCursorAdapter.PROJECTION_ROW_VALID, };
+
+        String orderBy = UserIds.USER_ID + " ASC";
+
+        String where = Tables.KEY_RINGS_SECRET + "." + KeyRings.MASTER_KEY_ID + " IS NOT NULL";
+        if (mFilterCertify) {
+            where += " AND (cert > 0)";
+        }
+
+        // Now create and return a CursorLoader that will take care of
+        // creating a Cursor for the data being displayed.
+        return new CursorLoader(getActivity(), baseUri, projection, where, null, orderBy);
+    }
+
+    @Override
+    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
+        // Swap the new cursor in. (The framework will take care of closing the
+        // old cursor once we return.)
+        mAdapter.swapCursor(data);
+
+        // The list should now be shown.
+        if (isResumed()) {
+            setListShown(true);
+        } else {
+            setListShownNoAnimation(true);
+        }
+    }
+
+    @Override
+    public void onLoaderReset(Loader<Cursor> loader) {
+        // This is called when the last Cursor provided to onLoadFinished()
+        // above is about to be closed. We need to make sure we are no
+        // longer using it.
+        mAdapter.swapCursor(null);
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SelectSecretKeyLayoutFragment.java

@@ -0,0 +1,211 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.content.CursorLoader;
+import android.support.v4.content.Loader;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import com.beardedhen.androidbootstrap.BootstrapButton;
+
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.KeychainContract;
+
+public class SelectSecretKeyLayoutFragment extends Fragment implements LoaderManager.LoaderCallbacks<Cursor> {
+
+    private TextView mKeyUserId;
+    private TextView mKeyUserIdRest;
+    private TextView mKeyMasterKeyIdHex;
+    private TextView mNoKeySelected;
+    private BootstrapButton mSelectKeyButton;
+    private Boolean mFilterCertify;
+
+    private Uri mReceivedUri = null;
+
+    private SelectSecretKeyCallback mCallback;
+
+    private static final int REQUEST_CODE_SELECT_KEY = 8882;
+
+    private static final int LOADER_ID = 0;
+
+    //The Projection we will retrieve, Master Key ID is for convenience sake,
+    //to avoid having to pass the Key Around
+    final String[] PROJECTION = new String[] {
+            KeychainContract.Keys.MASTER_KEY_ID,
+            KeychainContract.UserIds.USER_ID
+    };
+    final int INDEX_MASTER_KEY_ID = 0;
+    final int INDEX_USER_ID = 1;
+
+    public interface SelectSecretKeyCallback {
+        void onKeySelected(long secretKeyId);
+    }
+
+    public void setCallback(SelectSecretKeyCallback callback) {
+        mCallback = callback;
+    }
+
+    public void setFilterCertify(Boolean filterCertify) {
+        mFilterCertify = filterCertify;
+    }
+
+    public void setNoKeySelected() {
+        mNoKeySelected.setVisibility(View.VISIBLE);
+        mKeyUserId.setVisibility(View.GONE);
+        mKeyUserIdRest.setVisibility(View.GONE);
+        mKeyMasterKeyIdHex.setVisibility(View.GONE);
+    }
+
+    public void setSelectedKeyData(String userName, String email, String masterKeyHex) {
+
+        mNoKeySelected.setVisibility(View.GONE);
+
+        mKeyUserId.setText(userName);
+        mKeyUserIdRest.setText(email);
+        mKeyMasterKeyIdHex.setText(masterKeyHex);
+
+        mKeyUserId.setVisibility(View.VISIBLE);
+        mKeyUserIdRest.setVisibility(View.VISIBLE);
+        mKeyMasterKeyIdHex.setVisibility(View.VISIBLE);
+
+    }
+
+    public void setError(String error) {
+        mNoKeySelected.requestFocus();
+        mNoKeySelected.setError(error);
+    }
+
+    /**
+     * Inflate the layout for this fragment
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.select_secret_key_layout_fragment, container, false);
+
+        mNoKeySelected = (TextView) view.findViewById(R.id.no_key_selected);
+        mKeyUserId = (TextView) view.findViewById(R.id.select_secret_key_user_id);
+        mKeyUserIdRest = (TextView) view.findViewById(R.id.select_secret_key_user_id_rest);
+        mKeyMasterKeyIdHex = (TextView) view.findViewById(R.id.select_secret_key_master_key_hex);
+        mSelectKeyButton = (BootstrapButton) view
+                .findViewById(R.id.select_secret_key_select_key_button);
+        mFilterCertify = false;
+        mSelectKeyButton.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                startSelectKeyActivity();
+            }
+        });
+
+        return view;
+    }
+
+    //For AppSettingsFragment
+    public void selectKey(long masterKeyId) {
+        Uri buildUri = KeychainContract.KeyRings.buildGenericKeyRingUri(String.valueOf(masterKeyId));
+        mReceivedUri = buildUri;
+        getActivity().getSupportLoaderManager().restartLoader(LOADER_ID, null, this);
+    }
+
+    private void startSelectKeyActivity() {
+        Intent intent = new Intent(getActivity(), SelectSecretKeyActivity.class);
+        intent.putExtra(SelectSecretKeyActivity.EXTRA_FILTER_CERTIFY, mFilterCertify);
+        startActivityForResult(intent, REQUEST_CODE_SELECT_KEY);
+    }
+
+    @Override
+    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        Uri uri = KeychainContract.KeyRings.buildUnifiedKeyRingUri(mReceivedUri);
+        //We don't care about the Loader id
+        return new CursorLoader(getActivity(), uri, PROJECTION, null, null, null);
+    }
+
+    @Override
+    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
+        if (data.moveToFirst()) {
+            String userName, email, masterKeyHex;
+            String userID = data.getString(INDEX_USER_ID);
+            long masterKeyID = data.getLong(INDEX_MASTER_KEY_ID);
+
+            String splitUserID[] = PgpKeyHelper.splitUserId(userID);
+
+            if (splitUserID[0] != null) {
+                userName = splitUserID[0];
+            } else {
+                userName = getActivity().getResources().getString(R.string.user_id_no_name);
+            }
+
+            if (splitUserID[1] != null) {
+                email = splitUserID[1];
+            } else {
+                email = getActivity().getResources().getString(R.string.error_user_id_no_email);
+            }
+
+            //TODO Can the cursor return invalid values for the Master Key ?
+            masterKeyHex = PgpKeyHelper.convertKeyIdToHexShort(masterKeyID);
+
+            //Set the data
+            setSelectedKeyData(userName, email, masterKeyHex);
+
+            //Give value to the callback
+            mCallback.onKeySelected(masterKeyID);
+        } else {
+            //Set The empty View
+            setNoKeySelected();
+        }
+
+    }
+
+    @Override
+    public void onLoaderReset(Loader<Cursor> loader) {
+        return;
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode) {
+            case REQUEST_CODE_SELECT_KEY: {
+                if (resultCode == Activity.RESULT_OK) {
+                    mReceivedUri = data.getData();
+
+                    //Must be restartLoader() or the data will not be updated on selecting a new key
+                    getActivity().getSupportLoaderManager().restartLoader(0, null, this);
+
+                    mKeyUserId.setError(null);
+                }
+                break;
+            }
+
+            default:
+                super.onActivityResult(requestCode, resultCode, data);
+
+                break;
+        }
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/UploadKeyActivity.java

@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ * Copyright (C) 2011 Senecaso
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.ProgressDialog;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Message;
+import android.os.Messenger;
+import android.support.v7.app.ActionBarActivity;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.Preferences;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.util.Log;
+
+/**
+ * Sends the selected public key to a keyserver
+ */
+public class UploadKeyActivity extends ActionBarActivity {
+    private BootstrapButton mUploadButton;
+    private Spinner mKeyServerSpinner;
+
+    private Uri mDataUri;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.key_server_export);
+
+        mUploadButton = (BootstrapButton) findViewById(R.id.btn_export_to_server);
+        mKeyServerSpinner = (Spinner) findViewById(R.id.sign_key_keyserver);
+
+        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
+                android.R.layout.simple_spinner_item, Preferences.getPreferences(this)
+                .getKeyServers());
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        mKeyServerSpinner.setAdapter(adapter);
+        if (adapter.getCount() > 0) {
+            mKeyServerSpinner.setSelection(0);
+        } else {
+            mUploadButton.setEnabled(false);
+        }
+
+        mUploadButton.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                uploadKey();
+            }
+        });
+
+        mDataUri = getIntent().getData();
+        if (mDataUri == null) {
+            Log.e(Constants.TAG, "Intent data missing. Should be Uri of key!");
+            finish();
+            return;
+        }
+    }
+
+    private void uploadKey() {
+        // Send all information needed to service to upload key in other thread
+        Intent intent = new Intent(this, KeychainIntentService.class);
+
+        intent.setAction(KeychainIntentService.ACTION_UPLOAD_KEYRING);
+
+        // set data uri as path to keyring
+        intent.setData(mDataUri);
+
+        // fill values for this action
+        Bundle data = new Bundle();
+
+        String server = (String) mKeyServerSpinner.getSelectedItem();
+        data.putString(KeychainIntentService.UPLOAD_KEY_SERVER, server);
+
+        intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+        // Message is received after uploading is done in KeychainIntentService
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(this,
+                getString(R.string.progress_exporting), ProgressDialog.STYLE_HORIZONTAL) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+
+                    Toast.makeText(UploadKeyActivity.this, R.string.key_send_success,
+                            Toast.LENGTH_SHORT).show();
+                    finish();
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(saveHandler);
+        intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+        // show progress dialog
+        saveHandler.showProgressDialog(this);
+
+        // start service with intent
+        startService(intent);
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewCertActivity.java

@@ -0,0 +1,253 @@
+/*
+ * Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Bundle;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.content.CursorLoader;
+import android.support.v4.content.Loader;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.ActionBarActivity;
+import android.text.format.DateFormat;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.TextView;
+
+import org.spongycastle.bcpg.SignatureSubpacket;
+import org.spongycastle.bcpg.SignatureSubpacketTags;
+import org.spongycastle.bcpg.sig.RevocationReason;
+import org.spongycastle.openpgp.PGPException;
+import org.spongycastle.openpgp.PGPKeyRing;
+import org.spongycastle.openpgp.PGPSignature;
+import org.spongycastle.openpgp.operator.jcajce.JcaPGPContentVerifierBuilderProvider;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpConversionHelper;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.KeychainContract;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
+import org.sufficientlysecure.keychain.provider.KeychainContract.Certs;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.security.SignatureException;
+import java.util.Date;
+
+public class ViewCertActivity extends ActionBarActivity
+        implements LoaderManager.LoaderCallbacks<Cursor> {
+
+    // These are the rows that we will retrieve.
+    static final String[] PROJECTION = new String[]{
+            Certs.MASTER_KEY_ID,
+            Certs.USER_ID,
+            Certs.TYPE,
+            Certs.CREATION,
+            Certs.KEY_ID_CERTIFIER,
+            Certs.SIGNER_UID,
+            Certs.DATA,
+    };
+    private static final int INDEX_MASTER_KEY_ID = 0;
+    private static final int INDEX_USER_ID = 1;
+    private static final int INDEX_TYPE = 2;
+    private static final int INDEX_CREATION = 3;
+    private static final int INDEX_KEY_ID_CERTIFIER = 4;
+    private static final int INDEX_SIGNER_UID = 5;
+    private static final int INDEX_DATA = 6;
+
+    private Uri mDataUri;
+
+    private long mSignerKeyId;
+
+    private TextView mSigneeKey, mSigneeUid, mAlgorithm, mType, mRReason, mCreation;
+    private TextView mSignerKey, mSignerUid, mStatus;
+    private View mRowReason;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        ActionBar actionBar = getSupportActionBar();
+        actionBar.setDisplayHomeAsUpEnabled(true);
+
+        setContentView(R.layout.view_cert_activity);
+
+        mStatus = (TextView) findViewById(R.id.status);
+        mSigneeKey = (TextView) findViewById(R.id.signee_key);
+        mSigneeUid = (TextView) findViewById(R.id.signee_uid);
+        mAlgorithm = (TextView) findViewById(R.id.algorithm);
+        mType = (TextView) findViewById(R.id.signature_type);
+        mRReason = (TextView) findViewById(R.id.reason);
+        mCreation = (TextView) findViewById(R.id.creation);
+
+        mSignerKey = (TextView) findViewById(R.id.signer_key_id);
+        mSignerUid = (TextView) findViewById(R.id.signer_uid);
+
+        mRowReason = findViewById(R.id.row_reason);
+
+        mDataUri = getIntent().getData();
+        if (mDataUri == null) {
+            Log.e(Constants.TAG, "Intent data missing. Should be Uri of key!");
+            finish();
+            return;
+        }
+
+        getSupportLoaderManager().initLoader(0, null, this);
+    }
+
+    @Override
+    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        // Now create and return a CursorLoader that will take care of
+        // creating a Cursor for the data being displayed.
+        return new CursorLoader(this, mDataUri, PROJECTION, null, null, null);
+    }
+
+    @Override
+    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
+        if (data.moveToFirst()) {
+            String signeeKey = "0x" + PgpKeyHelper.convertKeyIdToHex(data.getLong(INDEX_MASTER_KEY_ID));
+            mSigneeKey.setText(signeeKey);
+
+            String signeeUid = data.getString(INDEX_USER_ID);
+            mSigneeUid.setText(signeeUid);
+
+            Date creationDate = new Date(data.getLong(INDEX_CREATION) * 1000);
+            mCreation.setText(DateFormat.getDateFormat(getApplicationContext()).format(creationDate));
+
+            mSignerKeyId = data.getLong(INDEX_KEY_ID_CERTIFIER);
+            String signerKey = "0x" + PgpKeyHelper.convertKeyIdToHex(mSignerKeyId);
+            mSignerKey.setText(signerKey);
+
+            String signerUid = data.getString(INDEX_SIGNER_UID);
+            if (signerUid != null) {
+                mSignerUid.setText(signerUid);
+            } else {
+                mSignerUid.setText(R.string.unknown_uid);
+            }
+
+            PGPSignature sig = PgpConversionHelper.BytesToPGPSignature(data.getBlob(INDEX_DATA));
+            PGPKeyRing signeeRing = ProviderHelper.getPGPKeyRing(this,
+                    KeychainContract.KeyRingData.buildPublicKeyRingUri(
+                            Long.toString(data.getLong(INDEX_MASTER_KEY_ID))));
+            PGPKeyRing signerRing = ProviderHelper.getPGPKeyRing(this,
+                    KeychainContract.KeyRingData.buildPublicKeyRingUri(
+                            Long.toString(sig.getKeyID())));
+
+            if (signerRing != null) {
+                try {
+                    sig.init(new JcaPGPContentVerifierBuilderProvider().setProvider(
+                            Constants.BOUNCY_CASTLE_PROVIDER_NAME), signeeRing.getPublicKey());
+                    if (sig.verifyCertification(signeeUid, signerRing.getPublicKey())) {
+                        mStatus.setText("ok");
+                        mStatus.setTextColor(getResources().getColor(R.color.bbutton_success));
+                    } else {
+                        mStatus.setText("failed!");
+                        mStatus.setTextColor(getResources().getColor(R.color.alert));
+                    }
+                } catch (SignatureException e) {
+                    mStatus.setText("error!");
+                    mStatus.setTextColor(getResources().getColor(R.color.alert));
+                } catch (PGPException e) {
+                    mStatus.setText("error!");
+                    mStatus.setTextColor(getResources().getColor(R.color.alert));
+                }
+            } else {
+                mStatus.setText("key unavailable");
+                mStatus.setTextColor(getResources().getColor(R.color.black));
+            }
+
+            String algorithmStr = PgpKeyHelper.getAlgorithmInfo(sig.getKeyAlgorithm(), 0);
+            mAlgorithm.setText(algorithmStr);
+
+            mRowReason.setVisibility(View.GONE);
+            switch (data.getInt(INDEX_TYPE)) {
+                case PGPSignature.DEFAULT_CERTIFICATION:
+                    mType.setText(R.string.cert_default);
+                    break;
+                case PGPSignature.NO_CERTIFICATION:
+                    mType.setText(R.string.cert_none);
+                    break;
+                case PGPSignature.CASUAL_CERTIFICATION:
+                    mType.setText(R.string.cert_casual);
+                    break;
+                case PGPSignature.POSITIVE_CERTIFICATION:
+                    mType.setText(R.string.cert_positive);
+                    break;
+                case PGPSignature.CERTIFICATION_REVOCATION: {
+                    mType.setText(R.string.cert_revoke);
+                    if (sig.getHashedSubPackets().hasSubpacket(SignatureSubpacketTags.REVOCATION_REASON)) {
+                        SignatureSubpacket p = sig.getHashedSubPackets().getSubpacket(
+                                SignatureSubpacketTags.REVOCATION_REASON);
+                        // For some reason, this is missing in SignatureSubpacketInputStream:146
+                        if (!(p instanceof RevocationReason)) {
+                            p = new RevocationReason(false, p.getData());
+                        }
+                        String reason = ((RevocationReason) p).getRevocationDescription();
+                        mRReason.setText(reason);
+                        mRowReason.setVisibility(View.VISIBLE);
+                    }
+                    break;
+                }
+            }
+        }
+    }
+
+    @Override
+    public void onLoaderReset(Loader<Cursor> loader) {
+    }
+
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        super.onCreateOptionsMenu(menu);
+        getMenuInflater().inflate(R.menu.view_cert, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.menu_view_cert_view_signer:
+                // can't do this before the data is initialized
+                Intent viewIntent = null;
+                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
+                    viewIntent = new Intent(this, ViewKeyActivity.class);
+                } else {
+                    viewIntent = new Intent(this, ViewKeyActivityJB.class);
+                }
+                //
+                long signerMasterKeyId = ProviderHelper.getMasterKeyId(this,
+                        KeyRings.buildUnifiedKeyRingsFindBySubkeyUri(Long.toString(mSignerKeyId))
+                );
+                // TODO notify user of this, maybe offer download?
+                if (mSignerKeyId == 0L)
+                    return true;
+                viewIntent.setData(KeyRings.buildGenericKeyRingUri(
+                        Long.toString(signerMasterKeyId))
+                );
+                startActivity(viewIntent);
+                return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java

@@ -0,0 +1,277 @@
+/*
+ * Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ * Copyright (C) 2013 Bahtiar 'kalkin' Gadimov
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.support.v4.view.ViewPager;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.ActionBarActivity;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.Window;
+import android.widget.Toast;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.compatibility.ClipboardReflection;
+import org.sufficientlysecure.keychain.helper.ExportHelper;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.KeychainContract;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.ui.adapter.TabsAdapter;
+import org.sufficientlysecure.keychain.ui.dialog.ShareNfcDialogFragment;
+import org.sufficientlysecure.keychain.ui.dialog.ShareQrCodeDialogFragment;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+
+public class ViewKeyActivity extends ActionBarActivity {
+
+    ExportHelper mExportHelper;
+
+    protected Uri mDataUri;
+
+    public static final String EXTRA_SELECTED_TAB = "selectedTab";
+
+    ViewPager mViewPager;
+    TabsAdapter mTabsAdapter;
+
+    private static final int RESULT_CODE_LOOKUP_KEY = 0x00007006;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
+        super.onCreate(savedInstanceState);
+
+        mExportHelper = new ExportHelper(this);
+
+        // let the actionbar look like Android's contact app
+        ActionBar actionBar = getSupportActionBar();
+        actionBar.setDisplayHomeAsUpEnabled(true);
+        actionBar.setIcon(android.R.color.transparent);
+        actionBar.setHomeButtonEnabled(true);
+        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
+
+        setContentView(R.layout.view_key_activity);
+
+        mViewPager = (ViewPager) findViewById(R.id.pager);
+
+        mTabsAdapter = new TabsAdapter(this, mViewPager);
+
+        int selectedTab = 0;
+        Intent intent = getIntent();
+        if (intent.getExtras() != null && intent.getExtras().containsKey(EXTRA_SELECTED_TAB)) {
+            selectedTab = intent.getExtras().getInt(EXTRA_SELECTED_TAB);
+        }
+
+        mDataUri = getIntent().getData();
+
+        Bundle mainBundle = new Bundle();
+        mainBundle.putParcelable(ViewKeyMainFragment.ARG_DATA_URI, mDataUri);
+        mTabsAdapter.addTab(actionBar.newTab().setText(getString(R.string.key_view_tab_main)),
+                ViewKeyMainFragment.class, mainBundle, (selectedTab == 0));
+
+        Bundle certBundle = new Bundle();
+        certBundle.putParcelable(ViewKeyCertsFragment.ARG_DATA_URI, mDataUri);
+        mTabsAdapter.addTab(actionBar.newTab().setText(getString(R.string.key_view_tab_certs)),
+                ViewKeyCertsFragment.class, certBundle, (selectedTab == 1));
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        super.onCreateOptionsMenu(menu);
+        getMenuInflater().inflate(R.menu.key_view, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case android.R.id.home:
+                Intent homeIntent = new Intent(this, KeyListActivity.class);
+                homeIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+                startActivity(homeIntent);
+                return true;
+            case R.id.menu_key_view_update:
+                updateFromKeyserver(mDataUri);
+                return true;
+            case R.id.menu_key_view_export_keyserver:
+                uploadToKeyserver(mDataUri);
+                return true;
+            case R.id.menu_key_view_export_file:
+                exportToFile(mDataUri);
+                return true;
+            case R.id.menu_key_view_share_default_fingerprint:
+                shareKey(mDataUri, true);
+                return true;
+            case R.id.menu_key_view_share_default:
+                shareKey(mDataUri, false);
+                return true;
+            case R.id.menu_key_view_share_qr_code_fingerprint:
+                shareKeyQrCode(mDataUri, true);
+                return true;
+            case R.id.menu_key_view_share_qr_code:
+                shareKeyQrCode(mDataUri, false);
+                return true;
+            case R.id.menu_key_view_share_nfc:
+                shareNfc();
+                return true;
+            case R.id.menu_key_view_share_clipboard:
+                copyToClipboard(mDataUri);
+                return true;
+            case R.id.menu_key_view_delete: {
+                deleteKey(mDataUri);
+                return true;
+            }
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    private void exportToFile(Uri dataUri) {
+        Uri baseUri = KeychainContract.KeyRings.buildUnifiedKeyRingUri(dataUri);
+
+        HashMap<String, Object> data = ProviderHelper.getGenericData(this,
+                baseUri,
+                new String[]{KeychainContract.Keys.MASTER_KEY_ID, KeychainContract.KeyRings.HAS_SECRET},
+                new int[]{ProviderHelper.FIELD_TYPE_INTEGER, ProviderHelper.FIELD_TYPE_INTEGER});
+
+        mExportHelper.showExportKeysDialog(
+                new long[]{(Long) data.get(KeychainContract.KeyRings.MASTER_KEY_ID)},
+                Constants.Path.APP_DIR_FILE,
+                ((Long) data.get(KeychainContract.KeyRings.HAS_SECRET) == 1)
+        );
+    }
+
+    private void uploadToKeyserver(Uri dataUri) {
+        Intent uploadIntent = new Intent(this, UploadKeyActivity.class);
+        uploadIntent.setData(dataUri);
+        startActivityForResult(uploadIntent, Id.request.export_to_server);
+    }
+
+    private void updateFromKeyserver(Uri dataUri) {
+        byte[] blob = (byte[]) ProviderHelper.getGenericData(
+                this, KeychainContract.KeyRings.buildUnifiedKeyRingUri(dataUri),
+                KeychainContract.Keys.FINGERPRINT, ProviderHelper.FIELD_TYPE_BLOB);
+        String fingerprint = PgpKeyHelper.convertFingerprintToHex(blob);
+
+        Intent queryIntent = new Intent(this, ImportKeysActivity.class);
+        queryIntent.setAction(ImportKeysActivity.ACTION_IMPORT_KEY_FROM_KEYSERVER_AND_RETURN);
+        queryIntent.putExtra(ImportKeysActivity.EXTRA_FINGERPRINT, fingerprint);
+
+        startActivityForResult(queryIntent, RESULT_CODE_LOOKUP_KEY);
+    }
+
+    private void shareKey(Uri dataUri, boolean fingerprintOnly) {
+        String content;
+        if (fingerprintOnly) {
+            byte[] data = (byte[]) ProviderHelper.getGenericData(
+                    this, KeychainContract.KeyRings.buildUnifiedKeyRingUri(dataUri),
+                    KeychainContract.Keys.FINGERPRINT, ProviderHelper.FIELD_TYPE_BLOB);
+            if (data != null) {
+                String fingerprint = PgpKeyHelper.convertFingerprintToHex(data);
+                content = Constants.FINGERPRINT_SCHEME + ":" + fingerprint;
+            } else {
+                Toast.makeText(getApplicationContext(), "Bad key selected!",
+                        Toast.LENGTH_LONG).show();
+                return;
+            }
+        } else {
+            // get public keyring as ascii armored string
+            long masterKeyId = ProviderHelper.getMasterKeyId(this, dataUri);
+            ArrayList<String> keyringArmored = ProviderHelper.getKeyRingsAsArmoredString(
+                    this, new long[]{masterKeyId});
+
+            content = keyringArmored.get(0);
+
+            // Android will fail with android.os.TransactionTooLargeException if key is too big
+            // see http://www.lonestarprod.com/?p=34
+            if (content.length() >= 86389) {
+                Toast.makeText(getApplicationContext(), R.string.key_too_big_for_sharing,
+                        Toast.LENGTH_LONG).show();
+                return;
+            }
+        }
+
+        // let user choose application
+        Intent sendIntent = new Intent(Intent.ACTION_SEND);
+        sendIntent.putExtra(Intent.EXTRA_TEXT, content);
+        sendIntent.setType("text/plain");
+        startActivity(Intent.createChooser(sendIntent,
+                getResources().getText(R.string.action_share_key_with)));
+    }
+
+    private void shareKeyQrCode(Uri dataUri, boolean fingerprintOnly) {
+        ShareQrCodeDialogFragment dialog = ShareQrCodeDialogFragment.newInstance(dataUri,
+                fingerprintOnly);
+        dialog.show(getSupportFragmentManager(), "shareQrCodeDialog");
+    }
+
+    private void copyToClipboard(Uri dataUri) {
+        // get public keyring as ascii armored string
+        long masterKeyId = ProviderHelper.getMasterKeyId(this, dataUri);
+        ArrayList<String> keyringArmored = ProviderHelper.getKeyRingsAsArmoredString(
+                this, new long[]{masterKeyId});
+
+        ClipboardReflection.copyToClipboard(this, keyringArmored.get(0));
+        Toast.makeText(getApplicationContext(), R.string.key_copied_to_clipboard, Toast.LENGTH_LONG)
+                .show();
+    }
+
+    private void shareNfc() {
+        ShareNfcDialogFragment dialog = ShareNfcDialogFragment.newInstance();
+        dialog.show(getSupportFragmentManager(), "shareNfcDialog");
+    }
+
+    private void deleteKey(Uri dataUri) {
+        // Message is received after key is deleted
+        Handler returnHandler = new Handler() {
+            @Override
+            public void handleMessage(Message message) {
+                setResult(RESULT_CANCELED);
+                finish();
+            }
+        };
+
+        mExportHelper.deleteKey(dataUri, returnHandler);
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode) {
+            case RESULT_CODE_LOOKUP_KEY: {
+                if (resultCode == Activity.RESULT_OK) {
+                    // TODO: reload key??? move this into fragment?
+                }
+                break;
+            }
+
+            default: {
+                super.onActivityResult(requestCode, resultCode, data);
+
+                break;
+            }
+        }
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivityJB.java

@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.annotation.TargetApi;
+import android.nfc.NdefMessage;
+import android.nfc.NdefRecord;
+import android.nfc.NfcAdapter;
+import android.nfc.NfcAdapter.CreateNdefMessageCallback;
+import android.nfc.NfcAdapter.OnNdefPushCompleteCallback;
+import android.nfc.NfcEvent;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.widget.Toast;
+
+import com.devspark.appmsg.AppMsg;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.io.IOException;
+
+@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
+public class ViewKeyActivityJB extends ViewKeyActivity implements CreateNdefMessageCallback,
+        OnNdefPushCompleteCallback {
+
+    private NfcAdapter mNfcAdapter;
+    private byte[] mSharedKeyringBytes;
+    private static final int NFC_SENT = 1;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        initNfc();
+    }
+
+    /**
+     * NFC: Initialize NFC sharing if OS and device supports it
+     */
+    private void initNfc() {
+        // check if NFC Beam is supported (>= Android 4.1)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
+            // Check for available NFC Adapter
+            mNfcAdapter = NfcAdapter.getDefaultAdapter(this);
+            if (mNfcAdapter != null) {
+                // init nfc
+                // Register callback to set NDEF message
+                mNfcAdapter.setNdefPushMessageCallback(this, this);
+                // Register callback to listen for message-sent success
+                mNfcAdapter.setOnNdefPushCompleteCallback(this, this);
+            }
+        }
+    }
+
+    /**
+     * NFC: Implementation for the CreateNdefMessageCallback interface
+     */
+    @Override
+    public NdefMessage createNdefMessage(NfcEvent event) {
+        /**
+         * When a device receives a push with an AAR in it, the application specified in the AAR is
+         * guaranteed to run. The AAR overrides the tag dispatch system. You can add it back in to
+         * guarantee that this activity starts when receiving a beamed message. For now, this code
+         * uses the tag dispatch system.
+         */
+        try {
+            // get public keyring as byte array
+            mSharedKeyringBytes = ProviderHelper.getPGPKeyRing(this, mDataUri).getEncoded();
+
+            NdefMessage msg = new NdefMessage(NdefRecord.createMime(Constants.NFC_MIME,
+                    mSharedKeyringBytes), NdefRecord.createApplicationRecord(Constants.PACKAGE_NAME));
+            return msg;
+        } catch(IOException e) {
+            Log.e(Constants.TAG, "Error parsing keyring", e);
+            return null;
+        }
+    }
+
+    /**
+     * NFC: Implementation for the OnNdefPushCompleteCallback interface
+     */
+    @Override
+    public void onNdefPushComplete(NfcEvent arg0) {
+        // A handler is needed to send messages to the activity when this
+        // callback occurs, because it happens from a binder thread
+        mNfcHandler.obtainMessage(NFC_SENT).sendToTarget();
+    }
+
+    /**
+     * NFC: This handler receives a message from onNdefPushComplete
+     */
+    private final Handler mNfcHandler = new Handler() {
+        @Override
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+                case NFC_SENT:
+                    AppMsg.makeText(ViewKeyActivityJB.this, R.string.nfc_successfull,
+                            AppMsg.STYLE_INFO).show();
+                    break;
+            }
+        }
+    };
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyCertsFragment.java

@@ -0,0 +1,311 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.content.CursorLoader;
+import android.support.v4.content.Loader;
+import android.support.v4.widget.CursorAdapter;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.TextView;
+
+import org.spongycastle.openpgp.PGPSignature;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.KeychainContract.Certs;
+import org.sufficientlysecure.keychain.provider.KeychainDatabase.Tables;
+import org.sufficientlysecure.keychain.util.Log;
+
+import se.emilsjolander.stickylistheaders.ApiLevelTooLowException;
+import se.emilsjolander.stickylistheaders.StickyListHeadersAdapter;
+import se.emilsjolander.stickylistheaders.StickyListHeadersListView;
+
+
+public class ViewKeyCertsFragment extends Fragment
+        implements LoaderManager.LoaderCallbacks<Cursor>, AdapterView.OnItemClickListener {
+
+    // These are the rows that we will retrieve.
+    static final String[] PROJECTION = new String[] {
+        Certs._ID,
+        Certs.MASTER_KEY_ID,
+        Certs.VERIFIED,
+        Certs.TYPE,
+        Certs.RANK,
+        Certs.KEY_ID_CERTIFIER,
+        Certs.USER_ID,
+        Certs.SIGNER_UID
+    };
+
+    // sort by our user id,
+    static final String SORT_ORDER =
+              Tables.CERTS + "." + Certs.RANK + " ASC, "
+            + Certs.VERIFIED + " DESC, " + Certs.TYPE + " DESC, " + Certs.SIGNER_UID + " ASC";
+
+    public static final String ARG_DATA_URI = "data_uri";
+
+    private StickyListHeadersListView mStickyList;
+    private CertListAdapter mAdapter;
+
+    private Uri mDataUri;
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.view_key_certs_fragment, container, false);
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mStickyList = (StickyListHeadersListView) getActivity().findViewById(R.id.list);
+
+        if (!getArguments().containsKey(ARG_DATA_URI)) {
+            Log.e(Constants.TAG, "Data missing. Should be Uri of key!");
+            getActivity().finish();
+            return;
+        }
+
+        Uri uri = getArguments().getParcelable(ARG_DATA_URI);
+        mDataUri = Certs.buildCertsUri(uri);
+
+        mStickyList.setAreHeadersSticky(true);
+        mStickyList.setDrawingListUnderStickyHeader(false);
+        mStickyList.setFastScrollEnabled(true);
+        mStickyList.setOnItemClickListener(this);
+
+        try {
+            mStickyList.setFastScrollAlwaysVisible(true);
+        } catch (ApiLevelTooLowException e) {
+        }
+
+        mStickyList.setEmptyView(getActivity().findViewById(R.id.empty));
+
+        // TODO this view is made visible if no data is available
+        // mStickyList.setEmptyView(getActivity().findViewById(R.id.empty));
+
+
+        // Create an empty adapter we will use to display the loaded data.
+        mAdapter = new CertListAdapter(getActivity(), null);
+        mStickyList.setAdapter(mAdapter);
+
+        getLoaderManager().initLoader(0, null, this);
+    }
+
+    @Override
+    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        // Now create and return a CursorLoader that will take care of
+        // creating a Cursor for the data being displayed.
+        return new CursorLoader(getActivity(), mDataUri, PROJECTION, null, null, SORT_ORDER);
+    }
+
+    @Override
+    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
+        // Swap the new cursor in. (The framework will take care of closing the
+        // old cursor once we return.)
+        mAdapter.swapCursor(data);
+
+        mStickyList.setAdapter(mAdapter);
+    }
+
+    /**
+     * On click on item, start key view activity
+     */
+    @Override
+    public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
+        if(view.getTag(R.id.tag_mki) != null) {
+            long masterKeyId = (Long) view.getTag(R.id.tag_mki);
+            long rank = (Long) view.getTag(R.id.tag_rank);
+            long certifierId = (Long) view.getTag(R.id.tag_certifierId);
+
+            Intent viewIntent = new Intent(getActivity(), ViewCertActivity.class);
+            viewIntent.setData(Certs.buildCertsSpecificUri(
+                    Long.toString(masterKeyId), Long.toString(rank), Long.toString(certifierId)));
+            startActivity(viewIntent);
+        }
+    }
+
+    @Override
+    public void onLoaderReset(Loader<Cursor> loader) {
+        // This is called when the last Cursor provided to onLoadFinished()
+        // above is about to be closed. We need to make sure we are no
+        // longer using it.
+        mAdapter.swapCursor(null);
+    }
+
+    /**
+     * Implements StickyListHeadersAdapter from library
+     */
+    private class CertListAdapter extends CursorAdapter implements StickyListHeadersAdapter {
+        private LayoutInflater mInflater;
+        private int mIndexMasterKeyId, mIndexUserId, mIndexRank;
+        private int mIndexSignerKeyId, mIndexSignerUserId;
+        private int mIndexVerified, mIndexType;
+
+        public CertListAdapter(Context context, Cursor c) {
+            super(context, c, 0);
+
+            mInflater = LayoutInflater.from(context);
+            initIndex(c);
+        }
+
+        @Override
+        public Cursor swapCursor(Cursor newCursor) {
+            initIndex(newCursor);
+
+            return super.swapCursor(newCursor);
+        }
+
+        /**
+         * Get column indexes for performance reasons just once in constructor and swapCursor. For a
+         * performance comparison see http://stackoverflow.com/a/17999582
+         *
+         * @param cursor
+         */
+        private void initIndex(Cursor cursor) {
+            if (cursor != null) {
+                mIndexMasterKeyId = cursor.getColumnIndexOrThrow(Certs.MASTER_KEY_ID);
+                mIndexUserId = cursor.getColumnIndexOrThrow(Certs.USER_ID);
+                mIndexRank = cursor.getColumnIndexOrThrow(Certs.RANK);
+                mIndexType = cursor.getColumnIndexOrThrow(Certs.TYPE);
+                mIndexVerified = cursor.getColumnIndexOrThrow(Certs.VERIFIED);
+                mIndexSignerKeyId = cursor.getColumnIndexOrThrow(Certs.KEY_ID_CERTIFIER);
+                mIndexSignerUserId = cursor.getColumnIndexOrThrow(Certs.SIGNER_UID);
+            }
+        }
+
+        /**
+         * Bind cursor data to the item list view
+         * <p/>
+         * NOTE: CursorAdapter already implements the ViewHolder pattern in its getView() method.
+         * Thus no ViewHolder is required here.
+         */
+        @Override
+        public void bindView(View view, Context context, Cursor cursor) {
+
+            // set name and stuff, common to both key types
+            TextView wSignerKeyId = (TextView) view.findViewById(R.id.signerKeyId);
+            TextView wSignerUserId = (TextView) view.findViewById(R.id.signerUserId);
+            TextView wSignStatus = (TextView) view.findViewById(R.id.signStatus);
+
+            String signerKeyId = PgpKeyHelper.convertKeyIdToHex(cursor.getLong(mIndexSignerKeyId));
+            String signerUserId = cursor.getString(mIndexSignerUserId);
+            switch(cursor.getInt(mIndexType)) {
+                case PGPSignature.DEFAULT_CERTIFICATION: // 0x10
+                    wSignStatus.setText(R.string.cert_default); break;
+                case PGPSignature.NO_CERTIFICATION: // 0x11
+                    wSignStatus.setText(R.string.cert_none); break;
+                case PGPSignature.CASUAL_CERTIFICATION: // 0x12
+                    wSignStatus.setText(R.string.cert_casual); break;
+                case PGPSignature.POSITIVE_CERTIFICATION: // 0x13
+                    wSignStatus.setText(R.string.cert_positive); break;
+                case PGPSignature.CERTIFICATION_REVOCATION: // 0x30
+                    wSignStatus.setText(R.string.cert_revoke); break;
+            }
+
+            wSignerUserId.setText(signerUserId);
+            wSignerKeyId.setText(signerKeyId);
+
+            view.setTag(R.id.tag_mki, cursor.getLong(mIndexMasterKeyId));
+            view.setTag(R.id.tag_rank, cursor.getLong(mIndexRank));
+            view.setTag(R.id.tag_certifierId, cursor.getLong(mIndexSignerKeyId));
+        }
+
+        @Override
+        public View newView(Context context, Cursor cursor, ViewGroup parent) {
+            return mInflater.inflate(R.layout.view_key_certs_item, parent, false);
+        }
+
+        /**
+         * Creates a new header view and binds the section headers to it. It uses the ViewHolder
+         * pattern. Most functionality is similar to getView() from Android's CursorAdapter.
+         * <p/>
+         * NOTE: The variables mDataValid and mCursor are available due to the super class
+         * CursorAdapter.
+         */
+        @Override
+        public View getHeaderView(int position, View convertView, ViewGroup parent) {
+            HeaderViewHolder holder;
+            if (convertView == null) {
+                holder = new HeaderViewHolder();
+                convertView = mInflater.inflate(R.layout.view_key_certs_header, parent, false);
+                holder.text = (TextView) convertView.findViewById(R.id.stickylist_header_text);
+                holder.count = (TextView) convertView.findViewById(R.id.certs_num);
+                convertView.setTag(holder);
+            } else {
+                holder = (HeaderViewHolder) convertView.getTag();
+            }
+
+            if (!mDataValid) {
+                // no data available at this point
+                Log.d(Constants.TAG, "getHeaderView: No data available at this point!");
+                return convertView;
+            }
+
+            if (!mCursor.moveToPosition(position)) {
+                throw new IllegalStateException("couldn't move cursor to position " + position);
+            }
+
+            // set header text as first char in user id
+            String userId = mCursor.getString(mIndexUserId);
+            holder.text.setText(userId);
+            holder.count.setVisibility(View.GONE);
+            return convertView;
+        }
+
+        /**
+         * Header IDs should be static, position=1 should always return the same Id that is.
+         */
+        @Override
+        public long getHeaderId(int position) {
+            if (!mDataValid) {
+                // no data available at this point
+                Log.d(Constants.TAG, "getHeaderView: No data available at this point!");
+                return -1;
+            }
+
+            if (!mCursor.moveToPosition(position)) {
+                throw new IllegalStateException("couldn't move cursor to position " + position);
+            }
+
+            // otherwise, return the first character of the name as ID
+            return mCursor.getInt(mIndexRank);
+
+            // sort by the first four characters (should be enough I guess?)
+            // return ByteBuffer.wrap(userId.getBytes()).asLongBuffer().get(0);
+        }
+
+        class HeaderViewHolder {
+            TextView text;
+            TextView count;
+        }
+
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyMainFragment.java

@@ -0,0 +1,347 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui;
+
+import android.content.Intent;
+import android.database.Cursor;
+import android.graphics.Color;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.content.CursorLoader;
+import android.support.v4.content.Loader;
+import android.text.format.DateFormat;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.LinearLayout;
+import android.widget.ListView;
+import android.widget.TextView;
+
+import com.beardedhen.androidbootstrap.BootstrapButton;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
+import org.sufficientlysecure.keychain.provider.KeychainContract.Keys;
+import org.sufficientlysecure.keychain.provider.KeychainContract.UserIds;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.ui.adapter.ViewKeyKeysAdapter;
+import org.sufficientlysecure.keychain.ui.adapter.ViewKeyUserIdsAdapter;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.util.Date;
+
+
+public class ViewKeyMainFragment extends Fragment implements
+        LoaderManager.LoaderCallbacks<Cursor> {
+
+    public static final String ARG_DATA_URI = "uri";
+
+    private LinearLayout mContainer;
+    private TextView mName;
+    private TextView mEmail;
+    private TextView mComment;
+    private TextView mAlgorithm;
+    private TextView mKeyId;
+    private TextView mExpiry;
+    private TextView mCreation;
+    private TextView mFingerprint;
+    private TextView mSecretKey;
+    private BootstrapButton mActionEdit;
+    private BootstrapButton mActionEncrypt;
+    private BootstrapButton mActionCertify;
+
+    private ListView mUserIds;
+    private ListView mKeys;
+
+    private static final int LOADER_ID_UNIFIED = 0;
+    private static final int LOADER_ID_USER_IDS = 1;
+    private static final int LOADER_ID_KEYS = 2;
+
+    private ViewKeyUserIdsAdapter mUserIdsAdapter;
+    private ViewKeyKeysAdapter mKeysAdapter;
+
+    private Uri mDataUri;
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.view_key_main_fragment, container, false);
+
+        mContainer = (LinearLayout) view.findViewById(R.id.container);
+        mName = (TextView) view.findViewById(R.id.name);
+        mEmail = (TextView) view.findViewById(R.id.email);
+        mComment = (TextView) view.findViewById(R.id.comment);
+        mKeyId = (TextView) view.findViewById(R.id.key_id);
+        mAlgorithm = (TextView) view.findViewById(R.id.algorithm);
+        mCreation = (TextView) view.findViewById(R.id.creation);
+        mExpiry = (TextView) view.findViewById(R.id.expiry);
+        mFingerprint = (TextView) view.findViewById(R.id.fingerprint);
+        mSecretKey = (TextView) view.findViewById(R.id.secret_key);
+        mUserIds = (ListView) view.findViewById(R.id.user_ids);
+        mKeys = (ListView) view.findViewById(R.id.keys);
+        mActionEdit = (BootstrapButton) view.findViewById(R.id.action_edit);
+        mActionEncrypt = (BootstrapButton) view.findViewById(R.id.action_encrypt);
+        mActionCertify = (BootstrapButton) view.findViewById(R.id.action_certify);
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        Uri dataUri = getArguments().getParcelable(ARG_DATA_URI);
+        if (dataUri == null) {
+            Log.e(Constants.TAG, "Data missing. Should be Uri of key!");
+            getActivity().finish();
+            return;
+        }
+
+        loadData(dataUri);
+    }
+
+    private void loadData(Uri dataUri) {
+        if (dataUri.equals(mDataUri)) {
+            Log.d(Constants.TAG, "Same URI, no need to load the data again!");
+            return;
+        }
+
+        getActivity().setProgressBarIndeterminateVisibility(Boolean.TRUE);
+        mContainer.setVisibility(View.GONE);
+
+        mDataUri = dataUri;
+
+        Log.i(Constants.TAG, "mDataUri: " + mDataUri.toString());
+
+        mActionEncrypt.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                encryptToContact(mDataUri);
+            }
+        });
+        mActionCertify.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View view) {
+                certifyKey(mDataUri);
+            }
+        });
+
+        mUserIdsAdapter = new ViewKeyUserIdsAdapter(getActivity(), null, 0);
+        mUserIds.setAdapter(mUserIdsAdapter);
+
+        mKeysAdapter = new ViewKeyKeysAdapter(getActivity(), null, 0);
+        mKeys.setAdapter(mKeysAdapter);
+
+        // Prepare the loaders. Either re-connect with an existing ones,
+        // or start new ones.
+        getActivity().getSupportLoaderManager().initLoader(LOADER_ID_UNIFIED, null, this);
+        getActivity().getSupportLoaderManager().initLoader(LOADER_ID_USER_IDS, null, this);
+        getActivity().getSupportLoaderManager().initLoader(LOADER_ID_KEYS, null, this);
+    }
+
+    static final String[] UNIFIED_PROJECTION = new String[] {
+        KeyRings._ID, KeyRings.MASTER_KEY_ID, KeyRings.HAS_SECRET,
+            KeyRings.USER_ID, KeyRings.FINGERPRINT,
+            KeyRings.ALGORITHM, KeyRings.KEY_SIZE, KeyRings.CREATION, KeyRings.EXPIRY,
+
+    };
+    static final int INDEX_UNIFIED_MKI = 1;
+    static final int INDEX_UNIFIED_HAS_SECRET = 2;
+    static final int INDEX_UNIFIED_UID = 3;
+    static final int INDEX_UNIFIED_FINGERPRINT = 4;
+    static final int INDEX_UNIFIED_ALGORITHM = 5;
+    static final int INDEX_UNIFIED_KEY_SIZE = 6;
+    static final int INDEX_UNIFIED_CREATION = 7;
+    static final int INDEX_UNIFIED_EXPIRY = 8;
+
+    static final String[] KEYS_PROJECTION = new String[] {
+            Keys._ID,
+            Keys.KEY_ID, Keys.RANK, Keys.ALGORITHM, Keys.KEY_SIZE,
+            Keys.CAN_CERTIFY, Keys.CAN_ENCRYPT, Keys.CAN_SIGN, Keys.IS_REVOKED,
+            Keys.CREATION, Keys.EXPIRY, Keys.FINGERPRINT
+    };
+    static final int KEYS_INDEX_CAN_ENCRYPT = 6;
+
+    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        switch (id) {
+            case LOADER_ID_UNIFIED: {
+                Uri baseUri = KeyRings.buildUnifiedKeyRingUri(mDataUri);
+                return new CursorLoader(getActivity(), baseUri, UNIFIED_PROJECTION, null, null, null);
+            }
+            case LOADER_ID_USER_IDS: {
+                Uri baseUri = UserIds.buildUserIdsUri(mDataUri);
+                return new CursorLoader(getActivity(), baseUri, ViewKeyUserIdsAdapter.USER_IDS_PROJECTION, null, null, null);
+            }
+            case LOADER_ID_KEYS: {
+                Uri baseUri = Keys.buildKeysUri(mDataUri);
+                return new CursorLoader(getActivity(), baseUri, KEYS_PROJECTION, null, null, null);
+            }
+
+            default:
+                return null;
+        }
+    }
+
+    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
+        /* TODO better error handling? May cause problems when a key is deleted,
+         * because the notification triggers faster than the activity closes.
+         */
+        // Avoid NullPointerExceptions...
+        if(data.getCount() == 0)
+            return;
+        // Swap the new cursor in. (The framework will take care of closing the
+        // old cursor once we return.)
+        switch (loader.getId()) {
+            case LOADER_ID_UNIFIED: {
+                if (data.moveToFirst()) {
+                    // get name, email, and comment from USER_ID
+                    String[] mainUserId = PgpKeyHelper.splitUserId(data.getString(INDEX_UNIFIED_UID));
+                    if (mainUserId[0] != null) {
+                        getActivity().setTitle(mainUserId[0]);
+                        mName.setText(mainUserId[0]);
+                    } else {
+                        getActivity().setTitle(R.string.user_id_no_name);
+                        mName.setText(R.string.user_id_no_name);
+                    }
+                    mEmail.setText(mainUserId[1]);
+                    mComment.setText(mainUserId[2]);
+
+                    if (data.getInt(INDEX_UNIFIED_HAS_SECRET) != 0) {
+                        mSecretKey.setTextColor(getResources().getColor(R.color.emphasis));
+                        mSecretKey.setText(R.string.secret_key_yes);
+
+                        // edit button
+                        mActionEdit.setVisibility(View.VISIBLE);
+                        mActionEdit.setOnClickListener(new View.OnClickListener() {
+                            public void onClick(View view) {
+                                Intent editIntent = new Intent(getActivity(), EditKeyActivity.class);
+                                editIntent.setData(mDataUri);
+                                editIntent.setAction(EditKeyActivity.ACTION_EDIT_KEY);
+                                startActivityForResult(editIntent, 0);
+                            }
+                        });
+                    } else {
+                        mSecretKey.setTextColor(Color.BLACK);
+                        mSecretKey.setText(getResources().getString(R.string.secret_key_no));
+
+                        // certify button
+                        mActionCertify.setVisibility(View.VISIBLE);
+                        // edit button
+                        mActionEdit.setVisibility(View.GONE);
+                    }
+
+                    // get key id from MASTER_KEY_ID
+                    long masterKeyId = data.getLong(INDEX_UNIFIED_MKI);
+                    String keyIdStr = PgpKeyHelper.convertKeyIdToHex(masterKeyId);
+                    mKeyId.setText(keyIdStr);
+
+                    // get creation date from CREATION
+                    if (data.isNull(INDEX_UNIFIED_CREATION)) {
+                        mCreation.setText(R.string.none);
+                    } else {
+                        Date creationDate = new Date(data.getLong(INDEX_UNIFIED_CREATION) * 1000);
+
+                        mCreation.setText(
+                                DateFormat.getDateFormat(getActivity().getApplicationContext()).format(
+                                        creationDate));
+                    }
+
+                    // get expiry date from EXPIRY
+                    if (data.isNull(INDEX_UNIFIED_EXPIRY)) {
+                        mExpiry.setText(R.string.none);
+                    } else {
+                        Date expiryDate = new Date(data.getLong(INDEX_UNIFIED_EXPIRY) * 1000);
+
+                        mExpiry.setText(
+                                DateFormat.getDateFormat(getActivity().getApplicationContext()).format(
+                                        expiryDate));
+                    }
+
+                    String algorithmStr = PgpKeyHelper.getAlgorithmInfo(
+                            data.getInt(INDEX_UNIFIED_ALGORITHM), data.getInt(INDEX_UNIFIED_KEY_SIZE));
+                    mAlgorithm.setText(algorithmStr);
+
+                    byte[] fingerprintBlob = data.getBlob(INDEX_UNIFIED_FINGERPRINT);
+                    String fingerprint = PgpKeyHelper.convertFingerprintToHex(fingerprintBlob);
+                    mFingerprint.setText(PgpKeyHelper.colorizeFingerprint(fingerprint));
+
+                    break;
+                }
+            }
+
+            case LOADER_ID_USER_IDS:
+                mUserIdsAdapter.swapCursor(data);
+                break;
+
+            case LOADER_ID_KEYS:
+                // hide encrypt button if no encryption key is available
+                boolean canEncrypt = false;
+                data.moveToFirst();
+                do {
+                    if (data.getInt(KEYS_INDEX_CAN_ENCRYPT) == 1) {
+                        canEncrypt = true;
+                        break;
+                    }
+                } while (data.moveToNext());
+                if (!canEncrypt) {
+                    mActionEncrypt.setVisibility(View.GONE);
+                }
+
+                mKeysAdapter.swapCursor(data);
+                break;
+        }
+        getActivity().setProgressBarIndeterminateVisibility(Boolean.FALSE);
+        mContainer.setVisibility(View.VISIBLE);
+    }
+
+    /**
+     * This is called when the last Cursor provided to onLoadFinished() above is about to be closed.
+     * We need to make sure we are no longer using it.
+     */
+    public void onLoaderReset(Loader<Cursor> loader) {
+        switch (loader.getId()) {
+            case LOADER_ID_USER_IDS:
+                mUserIdsAdapter.swapCursor(null);
+                break;
+            case LOADER_ID_KEYS:
+                mKeysAdapter.swapCursor(null);
+                break;
+        }
+    }
+
+    private void encryptToContact(Uri dataUri) {
+        // TODO preselect from uri? should be feasible without trivial query
+        long keyId = ProviderHelper.getMasterKeyId(getActivity(), dataUri);
+
+        long[] encryptionKeyIds = new long[]{ keyId };
+        Intent intent = new Intent(getActivity(), EncryptActivity.class);
+        intent.setAction(EncryptActivity.ACTION_ENCRYPT);
+        intent.putExtra(EncryptActivity.EXTRA_ENCRYPTION_KEY_IDS, encryptionKeyIds);
+        // used instead of startActivity set actionbar based on callingPackage
+        startActivityForResult(intent, 0);
+    }
+
+    private void certifyKey(Uri dataUri) {
+        Intent signIntent = new Intent(getActivity(), CertifyKeyActivity.class);
+        signIntent.setData(dataUri);
+        startActivity(signIntent);
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/AsyncTaskResultWrapper.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.adapter;
+
+/**
+ * The AsyncTaskResultWrapper is used to wrap a result from a AsyncTask (for example: Loader).
+ * You can pass the result and an exception in it if an error occurred.
+ * Concept found at:
+ * https://stackoverflow.com/questions/19593577/how-to-handle-errors-in-custom-asynctaskloader
+ *
+ * @param <T> - Typ of the result which is wrapped
+ */
+public class AsyncTaskResultWrapper<T> {
+
+    private final T mResult;
+    private final Exception mError;
+
+    public AsyncTaskResultWrapper(T result, Exception error) {
+        this.mResult = result;
+        this.mError = error;
+    }
+
+    public T getResult() {
+        return mResult;
+    }
+
+    public Exception getError() {
+        return mError;
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/HighlightQueryCursorAdapter.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.adapter;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.support.v4.widget.CursorAdapter;
+import android.text.Spannable;
+import android.text.style.ForegroundColorSpan;
+import org.sufficientlysecure.keychain.R;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public abstract class HighlightQueryCursorAdapter extends CursorAdapter {
+
+    private String mCurQuery;
+
+    public HighlightQueryCursorAdapter(Context context, Cursor c, int flags) {
+        super(context, c, flags);
+        mCurQuery = null;
+    }
+
+    public void setSearchQuery(String searchQuery) {
+        mCurQuery = searchQuery;
+    }
+
+    public String getSearchQuery() {
+        return mCurQuery;
+    }
+
+    protected Spannable highlightSearchQuery(String text) {
+        Spannable highlight = Spannable.Factory.getInstance().newSpannable(text);
+
+        if (mCurQuery != null) {
+            Pattern pattern = Pattern.compile("(?i)" + mCurQuery);
+            Matcher matcher = pattern.matcher(text);
+            if (matcher.find()) {
+                highlight.setSpan(
+                        new ForegroundColorSpan(mContext.getResources().getColor(R.color.emphasis)),
+                        matcher.start(),
+                        matcher.end(),
+                        Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
+            }
+            return highlight;
+        } else {
+            return highlight;
+        }
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/ImportKeysAdapter.java

@@ -0,0 +1,186 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.adapter;
+
+import android.annotation.SuppressLint;
+import android.app.Activity;
+import android.content.Context;
+import android.graphics.Color;
+import android.os.Build;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.CheckBox;
+import android.widget.LinearLayout;
+import android.widget.LinearLayout.LayoutParams;
+import android.widget.TextView;
+
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class ImportKeysAdapter extends ArrayAdapter<ImportKeysListEntry> {
+    protected LayoutInflater mInflater;
+    protected Activity mActivity;
+
+    protected List<ImportKeysListEntry> mData;
+
+    static class ViewHolder {
+        public TextView mainUserId;
+        public TextView mainUserIdRest;
+        public TextView keyId;
+        public TextView fingerprint;
+        public TextView algorithm;
+        public TextView status;
+    }
+
+    public ImportKeysAdapter(Activity activity) {
+        super(activity, -1);
+        mActivity = activity;
+        mInflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+    }
+
+    @SuppressLint("NewApi")
+    public void setData(List<ImportKeysListEntry> data) {
+        clear();
+        if (data != null) {
+            this.mData = data;
+
+            // add data to extended ArrayAdapter
+            if (Build.VERSION.SDK_INT >= 11) {
+                addAll(data);
+            } else {
+                for (ImportKeysListEntry entry : data) {
+                    add(entry);
+                }
+            }
+        }
+    }
+
+    public List<ImportKeysListEntry> getData() {
+        return mData;
+    }
+
+    public ArrayList<ImportKeysListEntry> getSelectedData() {
+        ArrayList<ImportKeysListEntry> selectedData = new ArrayList<ImportKeysListEntry>();
+        for (ImportKeysListEntry entry : mData) {
+            if (entry.isSelected()) {
+                selectedData.add(entry);
+            }
+        }
+        return selectedData;
+    }
+
+    @Override
+    public boolean hasStableIds() {
+        return true;
+    }
+
+    public View getView(int position, View convertView, ViewGroup parent) {
+        ImportKeysListEntry entry = mData.get(position);
+        ViewHolder holder;
+        if (convertView == null) {
+            holder = new ViewHolder();
+            convertView = mInflater.inflate(R.layout.import_keys_list_entry, null);
+            holder.mainUserId = (TextView) convertView.findViewById(R.id.mainUserId);
+            holder.mainUserIdRest = (TextView) convertView.findViewById(R.id.mainUserIdRest);
+            holder.keyId = (TextView) convertView.findViewById(R.id.keyId);
+            holder.fingerprint = (TextView) convertView.findViewById(R.id.fingerprint);
+            holder.algorithm = (TextView) convertView.findViewById(R.id.algorithm);
+            holder.status = (TextView) convertView.findViewById(R.id.status);
+            convertView.setTag(holder);
+        } else {
+            holder = (ViewHolder) convertView.getTag();
+        }
+        // main user id
+        String userId = entry.userIds.get(0);
+        String[] userIdSplit = PgpKeyHelper.splitUserId(userId);
+
+        // name
+        if (userIdSplit[0] != null) {
+            // show red user id if it is a secret key
+            if (entry.secretKey) {
+                userIdSplit[0] = mActivity.getString(R.string.secret_key) + " " + userIdSplit[0];
+                holder.mainUserId.setTextColor(Color.RED);
+            }
+            holder.mainUserId.setText(userIdSplit[0]);
+        } else {
+            holder.mainUserId.setText(R.string.user_id_no_name);
+        }
+
+        // email
+        if (userIdSplit[1] != null) {
+            holder.mainUserIdRest.setText(userIdSplit[1]);
+            holder.mainUserIdRest.setVisibility(View.VISIBLE);
+        } else {
+            holder.mainUserIdRest.setVisibility(View.GONE);
+        }
+
+        holder.keyId.setText(entry.keyIdHex);
+
+        if (entry.fingerPrintHex != null) {
+            holder.fingerprint.setText(PgpKeyHelper.colorizeFingerprint(entry.fingerPrintHex));
+            holder.fingerprint.setVisibility(View.VISIBLE);
+        } else {
+            holder.fingerprint.setVisibility(View.GONE);
+        }
+
+        holder.algorithm.setText("" + entry.bitStrength + "/" + entry.algorithm);
+
+        if (entry.revoked) {
+            holder.status.setText(R.string.revoked);
+        } else {
+            holder.status.setVisibility(View.GONE);
+        }
+
+        LinearLayout ll = (LinearLayout) convertView.findViewById(R.id.list);
+        ll.removeAllViews();
+        if (entry.userIds.size() == 1) {
+            ll.setVisibility(View.GONE);
+        } else {
+            boolean first = true;
+            boolean second = true;
+            for (String uid : entry.userIds) {
+                if (first) {
+                    first = false;
+                    continue;
+                }
+                if (!second) {
+                    View sep = new View(mActivity);
+                    sep.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, 1));
+                    sep.setBackgroundResource(android.R.drawable.divider_horizontal_dark);
+                    ll.addView(sep);
+                }
+                TextView uidView = (TextView) mInflater.inflate(
+                        R.layout.import_keys_list_entry_user_id, null);
+                uidView.setText(uid);
+                ll.addView(uidView);
+                second = false;
+            }
+        }
+
+        CheckBox cBox = (CheckBox) convertView.findViewById(R.id.selected);
+        cBox.setChecked(entry.isSelected());
+
+        return convertView;
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/ImportKeysListEntry.java

@@ -0,0 +1,274 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.adapter;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.util.SparseArray;
+
+import org.spongycastle.openpgp.PGPKeyRing;
+import org.spongycastle.openpgp.PGPPublicKey;
+import org.spongycastle.openpgp.PGPSecretKeyRing;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.util.IterableIterator;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.io.IOException;
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Date;
+
+public class ImportKeysListEntry implements Serializable, Parcelable {
+    private static final long serialVersionUID = -7797972103284992662L;
+
+    public ArrayList<String> userIds;
+    public long keyId;
+    public String keyIdHex;
+    public boolean revoked;
+    public Date date; // TODO: not displayed
+    public String fingerPrintHex;
+    public int bitStrength;
+    public String algorithm;
+    public boolean secretKey;
+
+    private boolean mSelected;
+
+    private byte[] mBytes = new byte[]{};
+
+    public ImportKeysListEntry(ImportKeysListEntry b) {
+        this.userIds = b.userIds;
+        this.keyId = b.keyId;
+        this.revoked = b.revoked;
+        this.date = b.date;
+        this.fingerPrintHex = b.fingerPrintHex;
+        this.keyIdHex = b.keyIdHex;
+        this.bitStrength = b.bitStrength;
+        this.algorithm = b.algorithm;
+        this.secretKey = b.secretKey;
+        this.mSelected = b.mSelected;
+        this.mBytes = b.mBytes;
+    }
+
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeStringList(userIds);
+        dest.writeLong(keyId);
+        dest.writeByte((byte) (revoked ? 1 : 0));
+        dest.writeSerializable(date);
+        dest.writeString(fingerPrintHex);
+        dest.writeString(keyIdHex);
+        dest.writeInt(bitStrength);
+        dest.writeString(algorithm);
+        dest.writeByte((byte) (secretKey ? 1 : 0));
+        dest.writeByte((byte) (mSelected ? 1 : 0));
+        dest.writeInt(mBytes.length);
+        dest.writeByteArray(mBytes);
+    }
+
+    public static final Creator<ImportKeysListEntry> CREATOR = new Creator<ImportKeysListEntry>() {
+        public ImportKeysListEntry createFromParcel(final Parcel source) {
+            ImportKeysListEntry vr = new ImportKeysListEntry();
+            vr.userIds = new ArrayList<String>();
+            source.readStringList(vr.userIds);
+            vr.keyId = source.readLong();
+            vr.revoked = source.readByte() == 1;
+            vr.date = (Date) source.readSerializable();
+            vr.fingerPrintHex = source.readString();
+            vr.keyIdHex = source.readString();
+            vr.bitStrength = source.readInt();
+            vr.algorithm = source.readString();
+            vr.secretKey = source.readByte() == 1;
+            vr.mSelected = source.readByte() == 1;
+            vr.mBytes = new byte[source.readInt()];
+            source.readByteArray(vr.mBytes);
+
+            return vr;
+        }
+
+        public ImportKeysListEntry[] newArray(final int size) {
+            return new ImportKeysListEntry[size];
+        }
+    };
+
+    public String getKeyIdHex() {
+        return keyIdHex;
+    }
+
+    public byte[] getBytes() {
+        return mBytes;
+    }
+
+    public void setBytes(byte[] bytes) {
+        this.mBytes = bytes;
+    }
+
+    public boolean isSelected() {
+        return mSelected;
+    }
+
+    public void setSelected(boolean selected) {
+        this.mSelected = selected;
+    }
+
+    public long getKeyId() {
+        return keyId;
+    }
+
+    public void setKeyId(long keyId) {
+        this.keyId = keyId;
+    }
+
+    public void setKeyIdHex(String keyIdHex) {
+        this.keyIdHex = keyIdHex;
+    }
+
+    public boolean isRevoked() {
+        return revoked;
+    }
+
+    public void setRevoked(boolean revoked) {
+        this.revoked = revoked;
+    }
+
+    public Date getDate() {
+        return date;
+    }
+
+    public void setDate(Date date) {
+        this.date = date;
+    }
+
+    public String getFingerPrintHex() {
+        return fingerPrintHex;
+    }
+
+    public void setFingerPrintHex(String fingerPrintHex) {
+        this.fingerPrintHex = fingerPrintHex;
+    }
+
+    public int getBitStrength() {
+        return bitStrength;
+    }
+
+    public void setBitStrength(int bitStrength) {
+        this.bitStrength = bitStrength;
+    }
+
+    public String getAlgorithm() {
+        return algorithm;
+    }
+
+    public void setAlgorithm(String algorithm) {
+        this.algorithm = algorithm;
+    }
+
+    public boolean isSecretKey() {
+        return secretKey;
+    }
+
+    public void setSecretKey(boolean secretKey) {
+        this.secretKey = secretKey;
+    }
+
+    public ArrayList<String> getUserIds() {
+        return userIds;
+    }
+
+    public void setUserIds(ArrayList<String> userIds) {
+        this.userIds = userIds;
+    }
+
+    /**
+     * Constructor for later querying from keyserver
+     */
+    public ImportKeysListEntry() {
+        // keys from keyserver are always public keys
+        secretKey = false;
+        // do not select by default
+        mSelected = false;
+        userIds = new ArrayList<String>();
+    }
+
+    /**
+     * Constructor based on key object, used for import from NFC, QR Codes, files
+     */
+    @SuppressWarnings("unchecked")
+    public ImportKeysListEntry(PGPKeyRing pgpKeyRing) {
+        // save actual key object into entry, used to import it later
+        try {
+            this.mBytes = pgpKeyRing.getEncoded();
+        } catch (IOException e) {
+            Log.e(Constants.TAG, "IOException on pgpKeyRing.getEncoded()", e);
+        }
+
+        // selected is default
+        this.mSelected = true;
+
+        if (pgpKeyRing instanceof PGPSecretKeyRing) {
+            secretKey = true;
+        } else {
+            secretKey = false;
+        }
+
+        userIds = new ArrayList<String>();
+        for (String userId : new IterableIterator<String>(pgpKeyRing.getPublicKey().getUserIDs())) {
+            userIds.add(userId);
+        }
+
+        this.keyId = pgpKeyRing.getPublicKey().getKeyID();
+        this.keyIdHex = PgpKeyHelper.convertKeyIdToHex(keyId);
+
+        this.revoked = pgpKeyRing.getPublicKey().isRevoked();
+        this.fingerPrintHex = PgpKeyHelper.convertFingerprintToHex(pgpKeyRing.getPublicKey()
+                .getFingerprint());
+        this.bitStrength = pgpKeyRing.getPublicKey().getBitStrength();
+        final int algorithm = pgpKeyRing.getPublicKey().getAlgorithm();
+        this.algorithm = getAlgorithmFromId(algorithm);
+    }
+
+    /**
+     * Based on <a href="http://tools.ietf.org/html/rfc2440#section-9.1">OpenPGP Message Format</a>
+     */
+    private static final SparseArray<String> ALGORITHM_IDS = new SparseArray<String>() {{
+        put(-1, "unknown"); // TODO: with resources
+        put(0, "unencrypted");
+        put(PGPPublicKey.RSA_GENERAL, "RSA");
+        put(PGPPublicKey.RSA_ENCRYPT, "RSA");
+        put(PGPPublicKey.RSA_SIGN, "RSA");
+        put(PGPPublicKey.ELGAMAL_ENCRYPT, "ElGamal");
+        put(PGPPublicKey.ELGAMAL_GENERAL, "ElGamal");
+        put(PGPPublicKey.DSA, "DSA");
+        put(PGPPublicKey.EC, "ECC");
+        put(PGPPublicKey.ECDSA, "ECC");
+        put(PGPPublicKey.ECDH, "ECC");
+    }};
+
+    /**
+     * Based on <a href="http://tools.ietf.org/html/rfc2440#section-9.1">OpenPGP Message Format</a>
+     */
+    public static String getAlgorithmFromId(int algorithmId) {
+        return (ALGORITHM_IDS.get(algorithmId) != null ?
+                    ALGORITHM_IDS.get(algorithmId) :
+                    ALGORITHM_IDS.get(-1));
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/ImportKeysListLoader.java

@@ -0,0 +1,167 @@
+/*
+ * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.adapter;
+
+import android.content.Context;
+import android.support.v4.content.AsyncTaskLoader;
+import org.spongycastle.openpgp.PGPKeyRing;
+import org.spongycastle.openpgp.PGPObjectFactory;
+import org.spongycastle.openpgp.PGPUtil;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.util.InputData;
+import org.sufficientlysecure.keychain.util.Log;
+import org.sufficientlysecure.keychain.util.PositionAwareInputStream;
+
+import java.io.BufferedInputStream;
+import java.io.InputStream;
+import java.util.ArrayList;
+
+public class ImportKeysListLoader
+        extends AsyncTaskLoader<AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>> {
+
+    public static class FileHasNoContent extends Exception {
+
+    }
+
+    public static class NonPgpPart extends Exception {
+        private int mCount;
+
+        public NonPgpPart(int count) {
+            this.mCount = count;
+        }
+
+        public int getCount() {
+            return mCount;
+        }
+    }
+
+    Context mContext;
+
+    InputData mInputData;
+
+    ArrayList<ImportKeysListEntry> mData = new ArrayList<ImportKeysListEntry>();
+    AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>> mEntryListWrapper;
+
+    public ImportKeysListLoader(Context context, InputData inputData) {
+        super(context);
+        this.mContext = context;
+        this.mInputData = inputData;
+    }
+
+    @Override
+    public AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>> loadInBackground() {
+
+        mEntryListWrapper = new AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>(mData, null);
+
+        if (mInputData == null) {
+            Log.e(Constants.TAG, "Input data is null!");
+            return mEntryListWrapper;
+        }
+
+        generateListOfKeyrings(mInputData);
+
+        return mEntryListWrapper;
+    }
+
+    @Override
+    protected void onReset() {
+        super.onReset();
+
+        // Ensure the loader is stopped
+        onStopLoading();
+    }
+
+    @Override
+    protected void onStartLoading() {
+        forceLoad();
+    }
+
+    @Override
+    protected void onStopLoading() {
+        cancelLoad();
+    }
+
+    @Override
+    public void deliverResult(AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>> data) {
+        super.deliverResult(data);
+    }
+
+    /**
+     * Reads all PGPKeyRing objects from input
+     *
+     * @param inputData
+     * @return
+     */
+    private void generateListOfKeyrings(InputData inputData) {
+
+        boolean isEmpty = true;
+        int nonPgpCounter = 0;
+
+        PositionAwareInputStream progressIn = new PositionAwareInputStream(
+                inputData.getInputStream());
+
+        // need to have access to the bufferedInput, so we can reuse it for the possible
+        // PGPObject chunks after the first one, e.g. files with several consecutive ASCII
+        // armor blocks
+        BufferedInputStream bufferedInput = new BufferedInputStream(progressIn);
+        try {
+
+            // read all available blocks... (asc files can contain many blocks with BEGIN END)
+            while (bufferedInput.available() > 0) {
+                isEmpty = false;
+                InputStream in = PGPUtil.getDecoderStream(bufferedInput);
+                PGPObjectFactory objectFactory = new PGPObjectFactory(in);
+
+                // go through all objects in this block
+                Object obj;
+                while ((obj = objectFactory.nextObject()) != null) {
+                    Log.d(Constants.TAG, "Found class: " + obj.getClass());
+
+                    if (obj instanceof PGPKeyRing) {
+                        PGPKeyRing newKeyring = (PGPKeyRing) obj;
+                        addToData(newKeyring);
+                    } else {
+                        Log.e(Constants.TAG, "Object not recognized as PGPKeyRing!");
+                        nonPgpCounter++;
+                    }
+                }
+            }
+        } catch (Exception e) {
+            Log.e(Constants.TAG, "Exception on parsing key file!", e);
+            mEntryListWrapper = new AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>(mData, e);
+            nonPgpCounter = 0;
+        }
+
+        if (isEmpty) {
+            Log.e(Constants.TAG, "File has no content!", new FileHasNoContent());
+            mEntryListWrapper = new AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>
+                    (mData, new FileHasNoContent());
+        }
+
+        if (nonPgpCounter > 0) {
+            mEntryListWrapper = new AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>
+                    (mData, new NonPgpPart(nonPgpCounter));
+        }
+    }
+
+    private void addToData(PGPKeyRing keyring) {
+        ImportKeysListEntry item = new ImportKeysListEntry(keyring);
+        mData.add(item);
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/ImportKeysListServerLoader.java

@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.adapter;
+
+import android.content.Context;
+import android.support.v4.content.AsyncTaskLoader;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.util.HkpKeyServer;
+import org.sufficientlysecure.keychain.util.KeyServer;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.util.ArrayList;
+
+public class ImportKeysListServerLoader
+        extends AsyncTaskLoader<AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>> {
+    Context mContext;
+
+    String mServerQuery;
+    String mKeyServer;
+
+    private ArrayList<ImportKeysListEntry> mEntryList = new ArrayList<ImportKeysListEntry>();
+    private AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>> mEntryListWrapper;
+
+    public ImportKeysListServerLoader(Context context, String serverQuery, String keyServer) {
+        super(context);
+        mContext = context;
+        mServerQuery = serverQuery;
+        mKeyServer = keyServer;
+    }
+
+    @Override
+    public AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>> loadInBackground() {
+
+        mEntryListWrapper = new AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>(mEntryList, null);
+
+        if (mServerQuery == null) {
+            Log.e(Constants.TAG, "mServerQuery is null!");
+            return mEntryListWrapper;
+        }
+
+        if (mServerQuery.startsWith("0x") && mServerQuery.length() == 42) {
+            Log.d(Constants.TAG, "This search is based on a unique fingerprint. Enforce a fingerprint check!");
+            queryServer(mServerQuery, mKeyServer, true);
+        } else {
+            queryServer(mServerQuery, mKeyServer, false);
+        }
+
+        return mEntryListWrapper;
+    }
+
+    @Override
+    protected void onReset() {
+        super.onReset();
+
+        // Ensure the loader is stopped
+        onStopLoading();
+    }
+
+    @Override
+    protected void onStartLoading() {
+        forceLoad();
+    }
+
+    @Override
+    protected void onStopLoading() {
+        cancelLoad();
+    }
+
+    @Override
+    public void deliverResult(AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>> data) {
+        super.deliverResult(data);
+    }
+
+    /**
+     * Query keyserver
+     */
+    private void queryServer(String query, String keyServer, boolean enforceFingerprint) {
+        HkpKeyServer server = new HkpKeyServer(keyServer);
+        try {
+            ArrayList<ImportKeysListEntry> searchResult = server.search(query);
+
+            mEntryList.clear();
+            // add result to data
+            if (enforceFingerprint) {
+                String fingerprint = query.substring(2);
+                Log.d(Constants.TAG, "fingerprint: " + fingerprint);
+                // query must return only one result!
+                if (searchResult.size() > 0) {
+                    ImportKeysListEntry uniqueEntry = searchResult.get(0);
+                    /*
+                     * set fingerprint explicitly after query
+                     * to enforce a check when the key is imported by KeychainIntentService
+                     */
+                    uniqueEntry.setFingerPrintHex(fingerprint);
+                    uniqueEntry.setSelected(true);
+                    mEntryList.add(uniqueEntry);
+                }
+            } else {
+                mEntryList.addAll(searchResult);
+            }
+            mEntryListWrapper = new AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>(mEntryList, null);
+        } catch (KeyServer.InsufficientQuery e) {
+            Log.e(Constants.TAG, "InsufficientQuery", e);
+            mEntryListWrapper = new AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>(mEntryList, e);
+        } catch (KeyServer.QueryException e) {
+            Log.e(Constants.TAG, "QueryException", e);
+            mEntryListWrapper = new AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>(mEntryList, e);
+        } catch (KeyServer.TooManyResponses e) {
+            Log.e(Constants.TAG, "TooManyResponses", e);
+            mEntryListWrapper = new AsyncTaskResultWrapper<ArrayList<ImportKeysListEntry>>(mEntryList, e);
+        }
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/KeyValueSpinnerAdapter.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.adapter;
+
+import android.content.Context;
+import android.widget.ArrayAdapter;
+
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.SortedSet;
+import java.util.TreeSet;
+
+public class KeyValueSpinnerAdapter extends ArrayAdapter<String> {
+    private final HashMap<Integer, String> mData;
+    private final int[] mKeys;
+    private final String[] mValues;
+
+    static <K, V extends Comparable<? super V>> SortedSet<Map.Entry<K, V>> entriesSortedByValues(
+            Map<K, V> map) {
+        SortedSet<Map.Entry<K, V>> sortedEntries = new TreeSet<Map.Entry<K, V>>(
+                new Comparator<Map.Entry<K, V>>() {
+                    @Override
+                    public int compare(Map.Entry<K, V> e1, Map.Entry<K, V> e2) {
+                        return e1.getValue().compareTo(e2.getValue());
+                    }
+                });
+        sortedEntries.addAll(map.entrySet());
+        return sortedEntries;
+    }
+
+    public KeyValueSpinnerAdapter(Context context, HashMap<Integer, String> objects) {
+        // To make the drop down a simple text box
+        super(context, android.R.layout.simple_spinner_item);
+        mData = objects;
+
+        // To make the drop down view a radio button list
+        setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+
+        SortedSet<Map.Entry<Integer, String>> sorted = entriesSortedByValues(objects);
+
+        // Assign hash keys with a position so that we can present and retrieve them
+        int i = 0;
+        mKeys = new int[mData.size()];
+        mValues = new String[mData.size()];
+        for (Map.Entry<Integer, String> entry : sorted) {
+            mKeys[i] = entry.getKey();
+            mValues[i] = entry.getValue();
+            i++;
+        }
+    }
+
+    public int getCount() {
+        return mData.size();
+    }
+
+    /**
+     * Returns the value
+     */
+    @Override
+    public String getItem(int position) {
+        // return the value based on the position. This is displayed in the list.
+        return mValues[position];
+    }
+
+    /**
+     * Returns item key
+     */
+    public long getItemId(int position) {
+        // Return an id to represent the item.
+
+        return mKeys[position];
+    }
+
+    /**
+     * Find position from key
+     */
+    public int getPosition(long itemId) {
+        for (int i = 0; i < mKeys.length; i++) {
+            if ((int) itemId == mKeys[i]) {
+                return i;
+            }
+        }
+        return -1;
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/PagerTabStripAdapter.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.adapter;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentPagerAdapter;
+import android.support.v7.app.ActionBarActivity;
+
+import java.util.ArrayList;
+
+public class PagerTabStripAdapter extends FragmentPagerAdapter {
+    private final Context mContext;
+    private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();
+
+    static final class TabInfo {
+        public final Class<?> clss;
+        public final Bundle args;
+        public final String title;
+
+        TabInfo(Class<?> clss, Bundle args, String title) {
+            this.clss = clss;
+            this.args = args;
+            this.title = title;
+        }
+    }
+
+    public PagerTabStripAdapter(ActionBarActivity activity) {
+        super(activity.getSupportFragmentManager());
+        mContext = activity;
+    }
+
+    public void addTab(Class<?> clss, Bundle args, String title) {
+        TabInfo info = new TabInfo(clss, args, title);
+        mTabs.add(info);
+        notifyDataSetChanged();
+    }
+
+    @Override
+    public int getCount() {
+        return mTabs.size();
+    }
+
+    @Override
+    public Fragment getItem(int position) {
+        TabInfo info = mTabs.get(position);
+        return Fragment.instantiate(mContext, info.clss.getName(), info.args);
+    }
+
+    @Override
+    public CharSequence getPageTitle(int position) {
+        return mTabs.get(position).title;
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/SelectKeyCursorAdapter.java

@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.adapter;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.CheckBox;
+import android.widget.ListView;
+import android.widget.TextView;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
+import org.sufficientlysecure.keychain.provider.KeychainContract.UserIds;
+
+
+public class SelectKeyCursorAdapter extends HighlightQueryCursorAdapter {
+
+    protected int mKeyType;
+
+    private LayoutInflater mInflater;
+    private ListView mListView;
+
+    private int mIndexUserId;
+    private int mIndexMasterKeyId;
+    private int mIndexProjectionValid;
+    private int mIndexProjectionAvailable;
+
+    public static final String PROJECTION_ROW_AVAILABLE = "available";
+    public static final String PROJECTION_ROW_VALID = "valid";
+
+    public SelectKeyCursorAdapter(Context context, Cursor c, int flags, ListView listView,
+                                  int keyType) {
+        super(context, c, flags);
+
+        mInflater = LayoutInflater.from(context);
+        mListView = listView;
+        mKeyType = keyType;
+        initIndex(c);
+    }
+
+    @Override
+    public Cursor swapCursor(Cursor newCursor) {
+        initIndex(newCursor);
+
+        return super.swapCursor(newCursor);
+    }
+
+    /**
+     * Get column indexes for performance reasons just once in constructor and swapCursor. For a
+     * performance comparison see http://stackoverflow.com/a/17999582
+     *
+     * @param cursor
+     */
+    private void initIndex(Cursor cursor) {
+        if (cursor != null) {
+            mIndexUserId = cursor.getColumnIndexOrThrow(UserIds.USER_ID);
+            mIndexMasterKeyId = cursor.getColumnIndexOrThrow(KeyRings.MASTER_KEY_ID);
+            mIndexProjectionValid = cursor.getColumnIndexOrThrow(PROJECTION_ROW_VALID);
+            mIndexProjectionAvailable = cursor.getColumnIndexOrThrow(PROJECTION_ROW_AVAILABLE);
+        }
+    }
+
+    public String getUserId(int position) {
+        mCursor.moveToPosition(position);
+        return mCursor.getString(mIndexUserId);
+    }
+
+    public long getMasterKeyId(int position) {
+        mCursor.moveToPosition(position);
+        return mCursor.getLong(mIndexMasterKeyId);
+    }
+
+    @Override
+    public void bindView(View view, Context context, Cursor cursor) {
+        boolean valid = cursor.getInt(mIndexProjectionValid) > 0;
+
+        TextView mainUserId = (TextView) view.findViewById(R.id.mainUserId);
+        TextView mainUserIdRest = (TextView) view.findViewById(R.id.mainUserIdRest);
+        TextView keyId = (TextView) view.findViewById(R.id.keyId);
+        TextView status = (TextView) view.findViewById(R.id.status);
+
+        String userId = cursor.getString(mIndexUserId);
+        String[] userIdSplit = PgpKeyHelper.splitUserId(userId);
+
+        if (userIdSplit[0] != null) {
+            mainUserId.setText(highlightSearchQuery(userIdSplit[0]));
+        } else {
+            mainUserId.setText(R.string.user_id_no_name);
+        }
+        if (userIdSplit[1] != null) {
+            mainUserIdRest.setText(highlightSearchQuery(userIdSplit[1]));
+        } else {
+            mainUserIdRest.setText("");
+        }
+
+        // TODO: needed to key id to no?
+        keyId.setText(R.string.no_key);
+        long masterKeyId = cursor.getLong(mIndexMasterKeyId);
+        keyId.setText(PgpKeyHelper.convertKeyIdToHexShort(masterKeyId));
+
+        // TODO: needed to set unknown_status?
+        status.setText(R.string.unknown_status);
+        if (valid) {
+            if (mKeyType == Id.type.public_key) {
+                status.setText(R.string.can_encrypt);
+            } else {
+                status.setText(R.string.can_sign);
+            }
+        } else {
+            if (cursor.getInt(mIndexProjectionAvailable) > 0) {
+                // has some CAN_ENCRYPT keys, but col(ROW_VALID) = 0, so must be revoked or
+                // expired
+                status.setText(R.string.expired);
+            } else {
+                status.setText(R.string.no_key);
+            }
+        }
+
+        CheckBox selected = (CheckBox) view.findViewById(R.id.selected);
+        if (mKeyType == Id.type.public_key) {
+            selected.setVisibility(View.VISIBLE);
+
+            if (!valid) {
+                mListView.setItemChecked(cursor.getPosition(), false);
+            }
+
+            selected.setChecked(mListView.isItemChecked(cursor.getPosition()));
+            selected.setEnabled(valid);
+        } else {
+            selected.setVisibility(View.GONE);
+        }
+
+        status.setText(status.getText() + " ");
+
+        view.setEnabled(valid);
+        mainUserId.setEnabled(valid);
+        mainUserIdRest.setEnabled(valid);
+        keyId.setEnabled(valid);
+        status.setEnabled(valid);
+    }
+
+    @Override
+    public View newView(Context context, Cursor cursor, ViewGroup parent) {
+        return mInflater.inflate(R.layout.select_key_item, null);
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/TabsAdapter.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.adapter;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentStatePagerAdapter;
+import android.support.v4.app.FragmentTransaction;
+import android.support.v4.view.ViewPager;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.ActionBarActivity;
+
+import java.util.ArrayList;
+
+public class TabsAdapter extends FragmentStatePagerAdapter implements ActionBar.TabListener,
+        ViewPager.OnPageChangeListener {
+    private final Context mContext;
+    private final ActionBar mActionBar;
+    private final ViewPager mViewPager;
+    private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();
+
+    static final class TabInfo {
+        public final Class<?> clss;
+        public final Bundle args;
+
+        TabInfo(Class<?> clss, Bundle args) {
+            this.clss = clss;
+            this.args = args;
+        }
+    }
+
+    public TabsAdapter(ActionBarActivity activity, ViewPager pager) {
+        super(activity.getSupportFragmentManager());
+        mContext = activity;
+        mActionBar = activity.getSupportActionBar();
+        mViewPager = pager;
+        mViewPager.setAdapter(this);
+        mViewPager.setOnPageChangeListener(this);
+    }
+
+    public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args, boolean selected) {
+        TabInfo info = new TabInfo(clss, args);
+        tab.setTag(info);
+        tab.setTabListener(this);
+        mTabs.add(info);
+        mActionBar.addTab(tab, selected);
+        notifyDataSetChanged();
+    }
+
+    @Override
+    public int getCount() {
+        return mTabs.size();
+    }
+
+    @Override
+    public Fragment getItem(int position) {
+        TabInfo info = mTabs.get(position);
+        return Fragment.instantiate(mContext, info.clss.getName(), info.args);
+    }
+
+    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
+    }
+
+    public void onPageSelected(int position) {
+        mActionBar.setSelectedNavigationItem(position);
+    }
+
+    public void onPageScrollStateChanged(int state) {
+    }
+
+    public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
+        Object tag = tab.getTag();
+        for (int i = 0; i < mTabs.size(); i++) {
+            if (mTabs.get(i) == tag) {
+                mViewPager.setCurrentItem(i);
+            }
+        }
+    }
+
+    public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {
+    }
+
+    public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/ViewKeyKeysAdapter.java

@@ -0,0 +1,175 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.adapter;
+
+import android.content.Context;
+import android.content.res.ColorStateList;
+import android.database.Cursor;
+import android.support.v4.widget.CursorAdapter;
+import android.text.format.DateFormat;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.OtherHelper;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.KeychainContract.Keys;
+
+import java.util.Date;
+
+public class ViewKeyKeysAdapter extends CursorAdapter {
+    private LayoutInflater mInflater;
+
+    private int mIndexKeyId;
+    private int mIndexAlgorithm;
+    private int mIndexKeySize;
+    private int mIndexRank;
+    private int mIndexCanCertify;
+    private int mIndexCanEncrypt;
+    private int mIndexCanSign;
+    private int mIndexRevokedKey;
+    private int mIndexExpiry;
+
+    private ColorStateList mDefaultTextColor;
+
+    public ViewKeyKeysAdapter(Context context, Cursor c, int flags) {
+        super(context, c, flags);
+
+        mInflater = LayoutInflater.from(context);
+
+        initIndex(c);
+    }
+
+    @Override
+    public Cursor swapCursor(Cursor newCursor) {
+        initIndex(newCursor);
+
+        return super.swapCursor(newCursor);
+    }
+
+    /**
+     * Get column indexes for performance reasons just once in constructor and swapCursor. For a
+     * performance comparison see http://stackoverflow.com/a/17999582
+     *
+     * @param cursor
+     */
+    private void initIndex(Cursor cursor) {
+        if (cursor != null) {
+            mIndexKeyId = cursor.getColumnIndexOrThrow(Keys.KEY_ID);
+            mIndexAlgorithm = cursor.getColumnIndexOrThrow(Keys.ALGORITHM);
+            mIndexKeySize = cursor.getColumnIndexOrThrow(Keys.KEY_SIZE);
+            mIndexRank = cursor.getColumnIndexOrThrow(Keys.RANK);
+            mIndexCanCertify = cursor.getColumnIndexOrThrow(Keys.CAN_CERTIFY);
+            mIndexCanEncrypt = cursor.getColumnIndexOrThrow(Keys.CAN_ENCRYPT);
+            mIndexCanSign = cursor.getColumnIndexOrThrow(Keys.CAN_SIGN);
+            mIndexRevokedKey = cursor.getColumnIndexOrThrow(Keys.IS_REVOKED);
+            mIndexExpiry = cursor.getColumnIndexOrThrow(Keys.EXPIRY);
+        }
+    }
+
+    @Override
+    public void bindView(View view, Context context, Cursor cursor) {
+        TextView keyId = (TextView) view.findViewById(R.id.keyId);
+        TextView keyDetails = (TextView) view.findViewById(R.id.keyDetails);
+        TextView keyExpiry = (TextView) view.findViewById(R.id.keyExpiry);
+        ImageView masterKeyIcon = (ImageView) view.findViewById(R.id.ic_masterKey);
+        ImageView certifyIcon = (ImageView) view.findViewById(R.id.ic_certifyKey);
+        ImageView encryptIcon = (ImageView) view.findViewById(R.id.ic_encryptKey);
+        ImageView signIcon = (ImageView) view.findViewById(R.id.ic_signKey);
+        ImageView revokedKeyIcon = (ImageView) view.findViewById(R.id.ic_revokedKey);
+
+        String keyIdStr = PgpKeyHelper.convertKeyIdToHexShort(cursor.getLong(mIndexKeyId));
+        String algorithmStr = PgpKeyHelper.getAlgorithmInfo(cursor.getInt(mIndexAlgorithm),
+                cursor.getInt(mIndexKeySize));
+
+        keyId.setText(keyIdStr);
+        keyDetails.setText("(" + algorithmStr + ")");
+
+        if (cursor.getInt(mIndexRank) == 0) {
+            masterKeyIcon.setVisibility(View.INVISIBLE);
+        } else {
+            masterKeyIcon.setVisibility(View.VISIBLE);
+        }
+
+        if (cursor.getInt(mIndexCanCertify) != 1) {
+            certifyIcon.setVisibility(View.GONE);
+        } else {
+            certifyIcon.setVisibility(View.VISIBLE);
+        }
+
+        if (cursor.getInt(mIndexCanEncrypt) != 1) {
+            encryptIcon.setVisibility(View.GONE);
+        } else {
+            encryptIcon.setVisibility(View.VISIBLE);
+        }
+
+        if (cursor.getInt(mIndexCanSign) != 1) {
+            signIcon.setVisibility(View.GONE);
+        } else {
+            signIcon.setVisibility(View.VISIBLE);
+        }
+
+        boolean valid = true;
+        if (cursor.getInt(mIndexRevokedKey) > 0) {
+            revokedKeyIcon.setVisibility(View.VISIBLE);
+
+            valid = false;
+        } else {
+            keyId.setTextColor(mDefaultTextColor);
+            keyDetails.setTextColor(mDefaultTextColor);
+            keyExpiry.setTextColor(mDefaultTextColor);
+
+            revokedKeyIcon.setVisibility(View.GONE);
+        }
+
+        if (!cursor.isNull(mIndexExpiry)) {
+            Date expiryDate = new Date(cursor.getLong(mIndexExpiry) * 1000);
+
+            valid = valid && expiryDate.after(new Date());
+            keyExpiry.setText("(" +
+                    context.getString(R.string.label_expiry) + ": " +
+                    DateFormat.getDateFormat(context).format(expiryDate) + ")");
+
+            keyExpiry.setVisibility(View.VISIBLE);
+        } else {
+            keyExpiry.setVisibility(View.GONE);
+        }
+        // if key is expired or revoked, strike through text
+        if (!valid) {
+            keyId.setText(OtherHelper.strikeOutText(keyId.getText()));
+            keyDetails.setText(OtherHelper.strikeOutText(keyDetails.getText()));
+            keyExpiry.setText(OtherHelper.strikeOutText(keyExpiry.getText()));
+        }
+        keyId.setEnabled(valid);
+        keyDetails.setEnabled(valid);
+        keyExpiry.setEnabled(valid);
+    }
+
+    @Override
+    public View newView(Context context, Cursor cursor, ViewGroup parent) {
+        View view = mInflater.inflate(R.layout.view_key_keys_item, null);
+        if (mDefaultTextColor == null) {
+            TextView keyId = (TextView) view.findViewById(R.id.keyId);
+            mDefaultTextColor = keyId.getTextColors();
+        }
+        return view;
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/ViewKeyUserIdsAdapter.java

@@ -0,0 +1,181 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.adapter;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.support.v4.widget.CursorAdapter;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.CheckBox;
+import android.widget.CompoundButton;
+import android.widget.ImageView;
+import android.widget.TextView;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.KeychainContract.UserIds;
+import org.sufficientlysecure.keychain.provider.KeychainContract.Certs;
+
+import java.util.ArrayList;
+
+public class ViewKeyUserIdsAdapter extends CursorAdapter implements AdapterView.OnItemClickListener {
+    private LayoutInflater mInflater;
+
+    private int mIndexUserId, mIndexRank;
+    private int mVerifiedId, mIsRevoked, mIsPrimary;
+
+    private final ArrayList<Boolean> mCheckStates;
+
+    public static final String[] USER_IDS_PROJECTION = new String[] {
+            UserIds._ID, UserIds.USER_ID, UserIds.RANK,
+            UserIds.VERIFIED, UserIds.IS_PRIMARY, UserIds.IS_REVOKED
+    };
+
+    public ViewKeyUserIdsAdapter(Context context, Cursor c, int flags, boolean showCheckBoxes) {
+        super(context, c, flags);
+
+        mInflater = LayoutInflater.from(context);
+
+        mCheckStates = showCheckBoxes ? new ArrayList<Boolean>() : null;
+
+        initIndex(c);
+    }
+    public ViewKeyUserIdsAdapter(Context context, Cursor c, int flags) {
+        this(context, c, flags, false);
+    }
+
+    @Override
+    public Cursor swapCursor(Cursor newCursor) {
+        initIndex(newCursor);
+        if (mCheckStates != null) {
+            mCheckStates.clear();
+            if (newCursor != null) {
+                int count = newCursor.getCount();
+                mCheckStates.ensureCapacity(count);
+                // initialize to true (use case knowledge: we usually want to sign all uids)
+                for(int i = 0; i < count; i++) {
+                    newCursor.moveToPosition(i);
+                    int verified = newCursor.getInt(mVerifiedId);
+                    mCheckStates.add(verified != Certs.VERIFIED_SECRET);
+                }
+            }
+        }
+
+        return super.swapCursor(newCursor);
+    }
+
+    /**
+     * Get column indexes for performance reasons just once in constructor and swapCursor. For a
+     * performance comparison see http://stackoverflow.com/a/17999582
+     *
+     * @param cursor
+     */
+    private void initIndex(Cursor cursor) {
+        if (cursor != null) {
+            mIndexUserId = cursor.getColumnIndexOrThrow(UserIds.USER_ID);
+            mIndexRank = cursor.getColumnIndexOrThrow(UserIds.RANK);
+            mVerifiedId = cursor.getColumnIndexOrThrow(UserIds.VERIFIED);
+            mIsRevoked = cursor.getColumnIndexOrThrow(UserIds.IS_REVOKED);
+            mIsPrimary = cursor.getColumnIndexOrThrow(UserIds.IS_PRIMARY);
+        }
+    }
+
+    @Override
+    public void bindView(View view, Context context, Cursor cursor) {
+
+        TextView vRank = (TextView) view.findViewById(R.id.rank);
+        TextView vUserId = (TextView) view.findViewById(R.id.userId);
+        TextView vAddress = (TextView) view.findViewById(R.id.address);
+        ImageView vVerified = (ImageView) view.findViewById(R.id.certified);
+
+        if(cursor.getInt(mIsPrimary) > 0) {
+            vRank.setText("+");
+        } else {
+            vRank.setText(Integer.toString(cursor.getInt(mIndexRank)));
+        }
+
+        String[] userId = PgpKeyHelper.splitUserId(cursor.getString(mIndexUserId));
+        if (userId[0] != null) {
+            vUserId.setText(userId[0]);
+        } else {
+            vUserId.setText(R.string.user_id_no_name);
+        }
+        vAddress.setText(userId[1]);
+
+        if(cursor.getInt(mIsRevoked) > 0) {
+            vRank.setText(" ");
+            vVerified.setImageResource(android.R.drawable.presence_away);
+        } else {
+            int verified = cursor.getInt(mVerifiedId);
+            // TODO introduce own resources for this :)
+            if(verified == Certs.VERIFIED_SECRET)
+                vVerified.setImageResource(android.R.drawable.presence_online);
+            else if(verified == Certs.VERIFIED_SELF)
+                vVerified.setImageResource(android.R.drawable.presence_invisible);
+            else
+                vVerified.setImageResource(android.R.drawable.presence_busy);
+        }
+
+        // don't care further if checkboxes aren't shown
+        if (mCheckStates == null) {
+            return;
+        }
+
+        final CheckBox vCheckBox = (CheckBox) view.findViewById(R.id.checkBox);
+        final int position = cursor.getPosition();
+        vCheckBox.setOnCheckedChangeListener(null);
+        vCheckBox.setChecked(mCheckStates.get(position));
+        vCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
+                mCheckStates.set(position, b);
+            }
+        });
+        vCheckBox.setClickable(false);
+
+    }
+
+    public void onItemClick(AdapterView<?> adapter, View view, int position, long id) {
+        CheckBox box = ((CheckBox) view.findViewById(R.id.checkBox));
+        if(box != null) {
+            box.toggle();
+        }
+    }
+
+    public ArrayList<String> getSelectedUserIds() {
+        ArrayList<String> result = new ArrayList<String>();
+        for (int i = 0; i < mCheckStates.size(); i++) {
+            if (mCheckStates.get(i)) {
+                mCursor.moveToPosition(i);
+                result.add(mCursor.getString(mIndexUserId));
+            }
+        }
+        return result;
+    }
+
+    @Override
+    public View newView(Context context, Cursor cursor, ViewGroup parent) {
+        View view = mInflater.inflate(R.layout.view_key_userids_item, null);
+        // only need to do this once ever, since mShowCheckBoxes is final
+        view.findViewById(R.id.checkBox).setVisibility(mCheckStates != null ? View.VISIBLE : View.GONE);
+        return view;
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/BadImportKeyDialogFragment.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.dialog;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.support.v4.app.DialogFragment;
+import android.support.v4.app.FragmentActivity;
+import org.sufficientlysecure.keychain.R;
+
+public class BadImportKeyDialogFragment extends DialogFragment {
+    private static final String ARG_BAD_IMPORT = "bad_import";
+
+    /**
+     * Creates a new instance of this Bad Import Key DialogFragment
+     *
+     * @param bad
+     * @return
+     */
+    public static BadImportKeyDialogFragment newInstance(int bad) {
+        BadImportKeyDialogFragment frag = new BadImportKeyDialogFragment();
+        Bundle args = new Bundle();
+
+        args.putInt(ARG_BAD_IMPORT, bad);
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final FragmentActivity activity = getActivity();
+        final int badImport = getArguments().getInt(ARG_BAD_IMPORT);
+
+        AlertDialog.Builder alert = new AlertDialog.Builder(activity);
+        alert.setIcon(R.drawable.ic_dialog_alert_holo_light);
+        alert.setTitle(R.string.warning);
+        alert.setMessage(activity.getResources()
+                .getQuantityString(R.plurals.bad_keys_encountered, badImport, badImport));
+        alert.setPositiveButton(android.R.string.ok,
+                new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int id) {
+                        dialog.cancel();
+                    }
+                });
+        alert.setCancelable(true);
+
+        return alert.create();
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/CreateKeyDialogFragment.java

@@ -0,0 +1,159 @@
+/*
+ * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.dialog;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.support.v4.app.DialogFragment;
+import android.support.v4.app.FragmentActivity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.util.Choice;
+
+import java.util.ArrayList;
+
+public class CreateKeyDialogFragment extends DialogFragment {
+
+    public interface OnAlgorithmSelectedListener {
+        public void onAlgorithmSelected(Choice algorithmChoice, int keySize);
+    }
+
+    private static final String ARG_EDITOR_CHILD_COUNT = "child_count";
+
+    private int mNewKeySize;
+    private Choice mNewKeyAlgorithmChoice;
+    private OnAlgorithmSelectedListener mAlgorithmSelectedListener;
+
+    public void setOnAlgorithmSelectedListener(OnAlgorithmSelectedListener listener) {
+        mAlgorithmSelectedListener = listener;
+    }
+
+    public static CreateKeyDialogFragment newInstance(int mEditorChildCount) {
+        CreateKeyDialogFragment frag = new CreateKeyDialogFragment();
+        Bundle args = new Bundle();
+
+        args.putInt(ARG_EDITOR_CHILD_COUNT, mEditorChildCount);
+
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final FragmentActivity context = getActivity();
+        final LayoutInflater mInflater;
+
+        final int childCount = getArguments().getInt(ARG_EDITOR_CHILD_COUNT);
+        mInflater = context.getLayoutInflater();
+
+        AlertDialog.Builder dialog = new AlertDialog.Builder(context);
+
+        View view = mInflater.inflate(R.layout.create_key_dialog, null);
+        dialog.setView(view);
+        dialog.setTitle(R.string.title_create_key);
+
+        boolean wouldBeMasterKey = (childCount == 0);
+
+        final Spinner algorithm = (Spinner) view.findViewById(R.id.create_key_algorithm);
+        ArrayList<Choice> choices = new ArrayList<Choice>();
+        choices.add(new Choice(Id.choice.algorithm.dsa, getResources().getString(
+                R.string.dsa)));
+        if (!wouldBeMasterKey) {
+            choices.add(new Choice(Id.choice.algorithm.elgamal, getResources().getString(
+                    R.string.elgamal)));
+        }
+
+        choices.add(new Choice(Id.choice.algorithm.rsa, getResources().getString(
+                R.string.rsa)));
+
+        ArrayAdapter<Choice> adapter = new ArrayAdapter<Choice>(context,
+                android.R.layout.simple_spinner_item, choices);
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        algorithm.setAdapter(adapter);
+        // make RSA the default
+        for (int i = 0; i < choices.size(); ++i) {
+            if (choices.get(i).getId() == Id.choice.algorithm.rsa) {
+                algorithm.setSelection(i);
+                break;
+            }
+        }
+
+        final Spinner keySize = (Spinner) view.findViewById(R.id.create_key_size);
+        ArrayAdapter<CharSequence> keySizeAdapter = ArrayAdapter.createFromResource(
+                context, R.array.key_size_spinner_values,
+                android.R.layout.simple_spinner_item);
+        keySizeAdapter
+                .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        keySize.setAdapter(keySizeAdapter);
+        keySize.setSelection(3); // Default to 4096 for the key length
+        dialog.setPositiveButton(android.R.string.ok,
+                new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface di, int id) {
+                        di.dismiss();
+                        try {
+                            final String selectedItem = (String) keySize.getSelectedItem();
+                            mNewKeySize = Integer.parseInt(selectedItem);
+                        } catch (NumberFormatException e) {
+                            mNewKeySize = 0;
+                        }
+
+                        mNewKeyAlgorithmChoice = (Choice) algorithm.getSelectedItem();
+                        mAlgorithmSelectedListener.onAlgorithmSelected(mNewKeyAlgorithmChoice, mNewKeySize);
+                    }
+                });
+
+        dialog.setCancelable(true);
+        dialog.setNegativeButton(android.R.string.cancel,
+                new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface di, int id) {
+                        di.dismiss();
+                    }
+                });
+
+        final AlertDialog alertDialog = dialog.create();
+
+        final AdapterView.OnItemSelectedListener weakRsaListener = new AdapterView.OnItemSelectedListener() {
+            @Override
+            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+                final Choice selectedAlgorithm = (Choice) algorithm.getSelectedItem();
+                final int selectedKeySize = Integer.parseInt((String) keySize.getSelectedItem());
+                final boolean isWeakRsa = (selectedAlgorithm.getId() == Id.choice.algorithm.rsa &&
+                                            selectedKeySize <= 1024);
+                alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(!isWeakRsa);
+            }
+
+            @Override
+            public void onNothingSelected(AdapterView<?> parent) {
+            }
+        };
+
+        keySize.setOnItemSelectedListener(weakRsaListener);
+        algorithm.setOnItemSelectedListener(weakRsaListener);
+
+        return alertDialog;
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/DeleteFileDialogFragment.java

@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.dialog;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.app.ProgressDialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Message;
+import android.os.Messenger;
+import android.support.v4.app.DialogFragment;
+import android.support.v4.app.FragmentActivity;
+import android.widget.Toast;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+
+public class DeleteFileDialogFragment extends DialogFragment {
+    private static final String ARG_DELETE_FILE = "delete_file";
+
+    /**
+     * Creates new instance of this delete file dialog fragment
+     */
+    public static DeleteFileDialogFragment newInstance(String deleteFile) {
+        DeleteFileDialogFragment frag = new DeleteFileDialogFragment();
+        Bundle args = new Bundle();
+
+        args.putString(ARG_DELETE_FILE, deleteFile);
+
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    /**
+     * Creates dialog
+     */
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final FragmentActivity activity = getActivity();
+
+        final String deleteFile = getArguments().getString(ARG_DELETE_FILE);
+
+        AlertDialog.Builder alert = new AlertDialog.Builder(activity);
+
+
+        alert.setIcon(R.drawable.ic_dialog_alert_holo_light);
+        alert.setTitle(R.string.warning);
+        alert.setMessage(this.getString(R.string.file_delete_confirmation, deleteFile));
+
+        alert.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
+
+            @Override
+            public void onClick(DialogInterface dialog, int id) {
+                dismiss();
+
+                // Send all information needed to service to edit key in other thread
+                Intent intent = new Intent(activity, KeychainIntentService.class);
+
+                // fill values for this action
+                Bundle data = new Bundle();
+
+                intent.setAction(KeychainIntentService.ACTION_DELETE_FILE_SECURELY);
+                data.putString(KeychainIntentService.DELETE_FILE, deleteFile);
+                intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+                ProgressDialogFragment deletingDialog = ProgressDialogFragment.newInstance(
+                        getString(R.string.progress_deleting_securely),
+                        ProgressDialog.STYLE_HORIZONTAL,
+                        false,
+                        null);
+
+                // Message is received after deleting is done in KeychainIntentService
+                KeychainIntentServiceHandler saveHandler =
+                        new KeychainIntentServiceHandler(activity, deletingDialog) {
+                    public void handleMessage(Message message) {
+                        // handle messages by standard KeychainIntentHandler first
+                        super.handleMessage(message);
+
+                        if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+                            Toast.makeText(activity, R.string.file_delete_successful,
+                                    Toast.LENGTH_SHORT).show();
+                        }
+                    }
+                };
+
+                // Create a new Messenger for the communication back
+                Messenger messenger = new Messenger(saveHandler);
+                intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+                // show progress dialog
+                deletingDialog.show(activity.getSupportFragmentManager(), "deletingDialog");
+
+                // start service with intent
+                activity.startService(intent);
+            }
+        });
+        alert.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
+            public void onClick(DialogInterface dialog, int id) {
+                dismiss();
+            }
+        });
+        alert.setCancelable(true);
+
+        return alert.create();
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/DeleteKeyDialogFragment.java

@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.dialog;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.RemoteException;
+import android.support.v4.app.DialogFragment;
+import android.support.v4.app.FragmentActivity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.CheckBox;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRingData;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
+import org.sufficientlysecure.keychain.provider.KeychainDatabase;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.util.HashMap;
+
+public class DeleteKeyDialogFragment extends DialogFragment {
+    private static final String ARG_MESSENGER = "messenger";
+    private static final String ARG_DELETE_MASTER_KEY_IDS = "delete_master_key_ids";
+
+    public static final int MESSAGE_OKAY = 1;
+    public static final int MESSAGE_ERROR = 0;
+
+    private boolean mIsSingleSelection = false;
+
+    private TextView mMainMessage;
+    private CheckBox mCheckDeleteSecret;
+    private LinearLayout mDeleteSecretKeyView;
+    private View mInflateView;
+
+    private Messenger mMessenger;
+
+    /**
+     * Creates new instance of this delete file dialog fragment
+     */
+    public static DeleteKeyDialogFragment newInstance(Messenger messenger,
+                                                      long[] masterKeyIds) {
+        DeleteKeyDialogFragment frag = new DeleteKeyDialogFragment();
+        Bundle args = new Bundle();
+
+        args.putParcelable(ARG_MESSENGER, messenger);
+        args.putLongArray(ARG_DELETE_MASTER_KEY_IDS, masterKeyIds);
+        //We don't need the key type
+
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+
+        final FragmentActivity activity = getActivity();
+        mMessenger = getArguments().getParcelable(ARG_MESSENGER);
+
+        final long[] masterKeyIds = getArguments().getLongArray(ARG_DELETE_MASTER_KEY_IDS);
+
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+
+        //Setup custom View to display in AlertDialog
+        LayoutInflater inflater = activity.getLayoutInflater();
+        mInflateView = inflater.inflate(R.layout.view_key_delete_fragment, null);
+        builder.setView(mInflateView);
+
+        mDeleteSecretKeyView = (LinearLayout) mInflateView.findViewById(R.id.deleteSecretKeyView);
+        mMainMessage = (TextView) mInflateView.findViewById(R.id.mainMessage);
+        mCheckDeleteSecret = (CheckBox) mInflateView.findViewById(R.id.checkDeleteSecret);
+
+        builder.setTitle(R.string.warning);
+
+        // If only a single key has been selected
+        if (masterKeyIds.length == 1) {
+            mIsSingleSelection = true;
+
+            long masterKeyId = masterKeyIds[0];
+
+            HashMap<String, Object> data = ProviderHelper.getUnifiedData(activity, masterKeyId, new String[]{
+                    KeyRings.USER_ID,
+                    KeyRings.HAS_SECRET
+            }, new int[] { ProviderHelper.FIELD_TYPE_STRING, ProviderHelper.FIELD_TYPE_INTEGER });
+            String userId = (String) data.get(KeyRings.USER_ID);
+            boolean hasSecret = ((Long) data.get(KeyRings.HAS_SECRET)) == 1;
+
+            // Hide the Checkbox and TextView since this is a single selection,user will be notified through message
+            mDeleteSecretKeyView.setVisibility(View.GONE);
+            // Set message depending on which key it is.
+            mMainMessage.setText(getString(
+                    hasSecret ? R.string.secret_key_deletion_confirmation
+                              : R.string.public_key_deletetion_confirmation,
+                    userId));
+        } else {
+            mDeleteSecretKeyView.setVisibility(View.VISIBLE);
+            mMainMessage.setText(R.string.key_deletion_confirmation_multi);
+        }
+
+        builder.setIcon(R.drawable.ic_dialog_alert_holo_light);
+        builder.setPositiveButton(R.string.btn_delete, new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+
+                boolean success = false;
+                for(long masterKeyId : masterKeyIds) {
+                    int count = activity.getContentResolver().delete(
+                            KeyRingData.buildPublicKeyRingUri(Long.toString(masterKeyId)), null, null
+                        );
+                    success = count > 0;
+                }
+                if (success) {
+                    sendMessageToHandler(MESSAGE_OKAY, null);
+                } else {
+                    sendMessageToHandler(MESSAGE_ERROR, null);
+                }
+                dismiss();
+            }
+        });
+        builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
+
+            @Override
+            public void onClick(DialogInterface dialog, int id) {
+                dismiss();
+            }
+        });
+
+        return builder.create();
+    }
+
+    /**
+     * Send message back to handler which is initialized in a activity
+     *
+     * @param what Message integer you want to send
+     */
+    private void sendMessageToHandler(Integer what, Bundle data) {
+        Message msg = Message.obtain();
+        msg.what = what;
+        if (data != null) {
+            msg.setData(data);
+        }
+        try {
+            mMessenger.send(msg);
+        } catch (RemoteException e) {
+            Log.w(Constants.TAG, "Exception sending message, Is handler present?", e);
+        } catch (NullPointerException e) {
+            Log.w(Constants.TAG, "Messenger is null!", e);
+        }
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/FileDialogFragment.java

@@ -0,0 +1,220 @@
+/*
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.dialog;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.RemoteException;
+import android.support.v4.app.DialogFragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.CheckBox;
+import android.widget.EditText;
+import android.widget.TextView;
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.FileHelper;
+import org.sufficientlysecure.keychain.util.Log;
+
+public class FileDialogFragment extends DialogFragment {
+    private static final String ARG_MESSENGER = "messenger";
+    private static final String ARG_TITLE = "title";
+    private static final String ARG_MESSAGE = "message";
+    private static final String ARG_DEFAULT_FILE = "default_file";
+    private static final String ARG_CHECKBOX_TEXT = "checkbox_text";
+
+    public static final int MESSAGE_OKAY = 1;
+
+    public static final String MESSAGE_DATA_FILENAME = "filename";
+    public static final String MESSAGE_DATA_CHECKED = "checked";
+
+    private Messenger mMessenger;
+
+    private EditText mFilename;
+    private BootstrapButton mBrowse;
+    private CheckBox mCheckBox;
+    private TextView mMessageTextView;
+
+    private static final int REQUEST_CODE = 0x00007004;
+
+    /**
+     * Creates new instance of this file dialog fragment
+     */
+    public static FileDialogFragment newInstance(Messenger messenger, String title, String message,
+                                                 String defaultFile, String checkboxText) {
+        FileDialogFragment frag = new FileDialogFragment();
+        Bundle args = new Bundle();
+        args.putParcelable(ARG_MESSENGER, messenger);
+
+        args.putString(ARG_TITLE, title);
+        args.putString(ARG_MESSAGE, message);
+        args.putString(ARG_DEFAULT_FILE, defaultFile);
+        args.putString(ARG_CHECKBOX_TEXT, checkboxText);
+
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    /**
+     * Creates dialog
+     */
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final Activity activity = getActivity();
+
+        mMessenger = getArguments().getParcelable(ARG_MESSENGER);
+
+        String title = getArguments().getString(ARG_TITLE);
+        String message = getArguments().getString(ARG_MESSAGE);
+        String defaultFile = getArguments().getString(ARG_DEFAULT_FILE);
+        String checkboxText = getArguments().getString(ARG_CHECKBOX_TEXT);
+
+        LayoutInflater inflater = (LayoutInflater) activity
+                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+        AlertDialog.Builder alert = new AlertDialog.Builder(activity);
+        alert.setTitle(title);
+
+        View view = inflater.inflate(R.layout.file_dialog, null);
+
+        mMessageTextView = (TextView) view.findViewById(R.id.message);
+        mMessageTextView.setText(message);
+
+        mFilename = (EditText) view.findViewById(R.id.input);
+        mFilename.setText(defaultFile);
+        mBrowse = (BootstrapButton) view.findViewById(R.id.btn_browse);
+        mBrowse.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                // only .asc or .gpg files
+                // setting it to text/plain prevents Cynaogenmod's file manager from selecting asc
+                // or gpg types!
+                FileHelper.openFile(FileDialogFragment.this, mFilename.getText().toString(), "*/*",
+                        REQUEST_CODE);
+            }
+        });
+
+        mCheckBox = (CheckBox) view.findViewById(R.id.checkbox);
+        if (checkboxText == null) {
+            mCheckBox.setEnabled(false);
+            mCheckBox.setVisibility(View.GONE);
+        } else {
+            mCheckBox.setEnabled(true);
+            mCheckBox.setVisibility(View.VISIBLE);
+            mCheckBox.setText(checkboxText);
+        }
+
+        alert.setView(view);
+
+        alert.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
+
+            @Override
+            public void onClick(DialogInterface dialog, int id) {
+                dismiss();
+
+                boolean checked = false;
+                if (mCheckBox.isEnabled()) {
+                    checked = mCheckBox.isChecked();
+                }
+
+                // return resulting data back to activity
+                Bundle data = new Bundle();
+                data.putString(MESSAGE_DATA_FILENAME, mFilename.getText().toString());
+                data.putBoolean(MESSAGE_DATA_CHECKED, checked);
+
+                sendMessageToHandler(MESSAGE_OKAY, data);
+            }
+        });
+
+        alert.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
+
+            @Override
+            public void onClick(DialogInterface dialog, int id) {
+                dismiss();
+            }
+        });
+        return alert.create();
+    }
+
+    /**
+     * Updates filename in dialog, normally called in onActivityResult in activity using the
+     * FileDialog
+     */
+    private void setFilename(String filename) {
+        AlertDialog dialog = (AlertDialog) getDialog();
+        EditText filenameEditText = (EditText) dialog.findViewById(R.id.input);
+
+        if (filenameEditText != null) {
+            filenameEditText.setText(filename);
+        }
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode & 0xFFFF) {
+            case REQUEST_CODE: {
+                if (resultCode == Activity.RESULT_OK && data != null) {
+                    try {
+                        String path = data.getData().getPath();
+                        Log.d(Constants.TAG, "path=" + path);
+
+                        // set filename used in export/import dialogs
+                        setFilename(path);
+                    } catch (NullPointerException e) {
+                        Log.e(Constants.TAG, "Nullpointer while retrieving path!", e);
+                    }
+                }
+
+                break;
+            }
+
+            default:
+                super.onActivityResult(requestCode, resultCode, data);
+
+                break;
+        }
+    }
+
+    /**
+     * Send message back to handler which is initialized in a activity
+     *
+     * @param what Message integer you want to send
+     */
+    private void sendMessageToHandler(Integer what, Bundle data) {
+        Message msg = Message.obtain();
+        msg.what = what;
+        if (data != null) {
+            msg.setData(data);
+        }
+
+        try {
+            mMessenger.send(msg);
+        } catch (RemoteException e) {
+            Log.w(Constants.TAG, "Exception sending message, Is handler present?", e);
+        } catch (NullPointerException e) {
+            Log.w(Constants.TAG, "Messenger is null!", e);
+        }
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/PassphraseDialogFragment.java

@@ -0,0 +1,328 @@
+/*
+ * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.dialog;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnClickListener;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.RemoteException;
+import android.support.v4.app.DialogFragment;
+import android.support.v4.app.FragmentActivity;
+import android.view.KeyEvent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.WindowManager.LayoutParams;
+import android.view.inputmethod.EditorInfo;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.TextView.OnEditorActionListener;
+import android.widget.Toast;
+import org.spongycastle.openpgp.PGPException;
+import org.spongycastle.openpgp.PGPPrivateKey;
+import org.spongycastle.openpgp.PGPSecretKey;
+import org.spongycastle.openpgp.operator.PBESecretKeyDecryptor;
+import org.spongycastle.openpgp.operator.jcajce.JcePBESecretKeyDecryptorBuilder;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.service.PassphraseCacheService;
+import org.sufficientlysecure.keychain.util.Log;
+
+public class PassphraseDialogFragment extends DialogFragment implements OnEditorActionListener {
+    private static final String ARG_MESSENGER = "messenger";
+    private static final String ARG_SECRET_KEY_ID = "secret_key_id";
+
+    public static final int MESSAGE_OKAY = 1;
+    public static final int MESSAGE_CANCEL = 2;
+
+    public static final String MESSAGE_DATA_PASSPHRASE = "passphrase";
+
+    private Messenger mMessenger;
+    private EditText mPassphraseEditText;
+    private boolean mCanKB;
+
+    /**
+     * Shows passphrase dialog to cache a new passphrase the user enters for using it later for
+     * encryption. Based on mSecretKeyId it asks for a passphrase to open a private key or it asks
+     * for a symmetric passphrase
+     */
+    public static void show(FragmentActivity context, long keyId, Handler returnHandler) {
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(returnHandler);
+
+        try {
+            PassphraseDialogFragment passphraseDialog = PassphraseDialogFragment.newInstance(context,
+                    messenger, keyId);
+
+            passphraseDialog.show(context.getSupportFragmentManager(), "passphraseDialog");
+        } catch (PgpGeneralException e) {
+            Log.d(Constants.TAG, "No passphrase for this secret key, encrypt directly!");
+            // send message to handler to start encryption directly
+            returnHandler.sendEmptyMessage(PassphraseDialogFragment.MESSAGE_OKAY);
+        }
+    }
+
+    /**
+     * Creates new instance of this dialog fragment
+     *
+     * @param secretKeyId secret key id you want to use
+     * @param messenger   to communicate back after caching the passphrase
+     * @return
+     * @throws PgpGeneralException
+     */
+    public static PassphraseDialogFragment newInstance(Context context, Messenger messenger,
+                                                       long secretKeyId) throws PgpGeneralException {
+        // check if secret key has a passphrase
+        if (!(secretKeyId == Id.key.symmetric || secretKeyId == Id.key.none)) {
+            if (!PassphraseCacheService.hasPassphrase(context, secretKeyId)) {
+                throw new PgpGeneralException("No passphrase! No passphrase dialog needed!");
+            }
+        }
+
+        PassphraseDialogFragment frag = new PassphraseDialogFragment();
+        Bundle args = new Bundle();
+        args.putLong(ARG_SECRET_KEY_ID, secretKeyId);
+        args.putParcelable(ARG_MESSENGER, messenger);
+
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    /**
+     * Creates dialog
+     */
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final Activity activity = getActivity();
+        final long secretKeyId = getArguments().getLong(ARG_SECRET_KEY_ID);
+        mMessenger = getArguments().getParcelable(ARG_MESSENGER);
+
+        AlertDialog.Builder alert = new AlertDialog.Builder(activity);
+
+        alert.setTitle(R.string.title_authentication);
+
+        final PGPSecretKey secretKey;
+
+        if (secretKeyId == Id.key.symmetric || secretKeyId == Id.key.none) {
+            secretKey = null;
+            alert.setMessage(R.string.passphrase_for_symmetric_encryption);
+        } else {
+            secretKey = ProviderHelper.getPGPSecretKeyRing(activity, secretKeyId).getSecretKey();
+
+            if (secretKey == null) {
+                alert.setTitle(R.string.title_key_not_found);
+                alert.setMessage(getString(R.string.key_not_found, secretKeyId));
+                alert.setPositiveButton(android.R.string.ok, new OnClickListener() {
+                    public void onClick(DialogInterface dialog, int which) {
+                        dismiss();
+                    }
+                });
+                alert.setCancelable(false);
+                mCanKB = false;
+                return alert.create();
+            }
+            String userId = PgpKeyHelper.getMainUserIdSafe(activity, secretKey);
+
+            Log.d(Constants.TAG, "User id: '" + userId + "'");
+            alert.setMessage(getString(R.string.passphrase_for, userId));
+        }
+
+        LayoutInflater inflater = activity.getLayoutInflater();
+        View view = inflater.inflate(R.layout.passphrase_dialog, null);
+        alert.setView(view);
+
+        mPassphraseEditText = (EditText) view.findViewById(R.id.passphrase_passphrase);
+
+        alert.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
+
+            @Override
+            public void onClick(DialogInterface dialog, int id) {
+                dismiss();
+                long curKeyIndex = 1;
+                boolean keyOK = true;
+                String passphrase = mPassphraseEditText.getText().toString();
+                long keyId;
+                PGPSecretKey clickSecretKey = secretKey;
+
+                if (clickSecretKey != null) {
+                    while (keyOK) {
+                        if (clickSecretKey != null) { // check again for loop
+                            try {
+                                PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder()
+                                        .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME).build(
+                                                passphrase.toCharArray());
+                                PGPPrivateKey testKey = clickSecretKey
+                                        .extractPrivateKey(keyDecryptor);
+                                if (testKey == null) {
+                                    if (!clickSecretKey.isMasterKey()) {
+                                        Toast.makeText(activity,
+                                                R.string.error_could_not_extract_private_key,
+                                                Toast.LENGTH_SHORT).show();
+
+                                        sendMessageToHandler(MESSAGE_CANCEL);
+                                        return;
+                                    } else {
+                                        clickSecretKey = PgpKeyHelper.getKeyNum(ProviderHelper
+                                                .getPGPSecretKeyRingWithKeyId(activity, secretKeyId),
+                                                curKeyIndex);
+                                        curKeyIndex++; // does post-increment work like C?
+                                        continue;
+                                    }
+                                } else {
+                                    keyOK = false;
+                                }
+                            } catch (PGPException e) {
+                                Toast.makeText(activity, R.string.wrong_passphrase,
+                                        Toast.LENGTH_SHORT).show();
+
+                                sendMessageToHandler(MESSAGE_CANCEL);
+                                return;
+                            }
+                        } else {
+                            Toast.makeText(activity, R.string.error_could_not_extract_private_key,
+                                    Toast.LENGTH_SHORT).show();
+
+                            sendMessageToHandler(MESSAGE_CANCEL);
+                            return; // ran out of keys to try
+                        }
+                    }
+                    keyId = secretKey.getKeyID();
+                } else {
+                    keyId = Id.key.symmetric;
+                }
+
+                // cache the new passphrase
+                Log.d(Constants.TAG, "Everything okay! Caching entered passphrase");
+                PassphraseCacheService.addCachedPassphrase(activity, keyId, passphrase);
+                if (!keyOK && clickSecretKey.getKeyID() != keyId) {
+                    PassphraseCacheService.addCachedPassphrase(activity, clickSecretKey.getKeyID(),
+                            passphrase);
+                }
+
+                // also return passphrase back to activity
+                Bundle data = new Bundle();
+                data.putString(MESSAGE_DATA_PASSPHRASE, passphrase);
+
+                sendMessageToHandler(MESSAGE_OKAY, data);
+            }
+        });
+
+        alert.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
+
+            @Override
+            public void onClick(DialogInterface dialog, int id) {
+                dialog.cancel();
+            }
+        });
+
+        mCanKB = true;
+        return alert.create();
+    }
+
+    @Override
+    public void onActivityCreated(Bundle arg0) {
+        super.onActivityCreated(arg0);
+        if (mCanKB) {
+            // request focus and open soft keyboard
+            mPassphraseEditText.requestFocus();
+            getDialog().getWindow().setSoftInputMode(LayoutParams.SOFT_INPUT_STATE_VISIBLE);
+
+            mPassphraseEditText.setOnEditorActionListener(this);
+        }
+    }
+
+    @Override
+    public void onCancel(DialogInterface dialog) {
+        super.onCancel(dialog);
+
+        dismiss();
+        sendMessageToHandler(MESSAGE_CANCEL);
+    }
+
+    /**
+     * Associate the "done" button on the soft keyboard with the okay button in the view
+     */
+    @Override
+    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
+        if (EditorInfo.IME_ACTION_DONE == actionId) {
+            AlertDialog dialog = ((AlertDialog) getDialog());
+            Button bt = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
+
+            bt.performClick();
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Send message back to handler which is initialized in a activity
+     *
+     * @param what Message integer you want to send
+     */
+    private void sendMessageToHandler(Integer what) {
+        Message msg = Message.obtain();
+        msg.what = what;
+
+        try {
+            mMessenger.send(msg);
+        } catch (RemoteException e) {
+            Log.w(Constants.TAG, "Exception sending message, Is handler present?", e);
+        } catch (NullPointerException e) {
+            Log.w(Constants.TAG, "Messenger is null!", e);
+        }
+    }
+
+    /**
+     * Send message back to handler which is initialized in a activity
+     *
+     * @param what Message integer you want to send
+     */
+    private void sendMessageToHandler(Integer what, Bundle data) {
+        Message msg = Message.obtain();
+        msg.what = what;
+        if (data != null) {
+            msg.setData(data);
+        }
+
+        try {
+            mMessenger.send(msg);
+        } catch (RemoteException e) {
+            Log.w(Constants.TAG, "Exception sending message, Is handler present?", e);
+        } catch (NullPointerException e) {
+            Log.w(Constants.TAG, "Messenger is null!", e);
+        }
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/ProgressDialogFragment.java

@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.dialog;
+
+import android.app.Activity;
+import android.app.Dialog;
+import android.app.ProgressDialog;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnCancelListener;
+import android.content.DialogInterface.OnKeyListener;
+import android.os.Bundle;
+import android.support.v4.app.DialogFragment;
+import android.view.KeyEvent;
+import org.sufficientlysecure.keychain.R;
+
+public class ProgressDialogFragment extends DialogFragment {
+    private static final String ARG_MESSAGE = "message";
+    private static final String ARG_STYLE = "style";
+    private static final String ARG_CANCELABLE = "cancelable";
+
+    private OnCancelListener mOnCancelListener;
+
+    /**
+     * Creates new instance of this fragment
+     *
+     * @param message
+     * @param style
+     * @param cancelable
+     * @return
+     */
+    public static ProgressDialogFragment newInstance(String message, int style, boolean cancelable,
+                                                     OnCancelListener onCancelListener) {
+        ProgressDialogFragment frag = new ProgressDialogFragment();
+        Bundle args = new Bundle();
+        args.putString(ARG_MESSAGE, message);
+        args.putInt(ARG_STYLE, style);
+        args.putBoolean(ARG_CANCELABLE, cancelable);
+
+        frag.setArguments(args);
+        frag.mOnCancelListener = onCancelListener;
+
+        return frag;
+    }
+
+    /**
+     * Updates progress of dialog
+     *
+     * @param messageId
+     * @param progress
+     * @param max
+     */
+    public void setProgress(int messageId, int progress, int max) {
+        setProgress(getString(messageId), progress, max);
+    }
+
+    /**
+     * Updates progress of dialog
+     *
+     * @param progress
+     * @param max
+     */
+    public void setProgress(int progress, int max) {
+        ProgressDialog dialog = (ProgressDialog) getDialog();
+
+        dialog.setProgress(progress);
+        dialog.setMax(max);
+    }
+
+    /**
+     * Updates progress of dialog
+     *
+     * @param message
+     * @param progress
+     * @param max
+     */
+    public void setProgress(String message, int progress, int max) {
+        ProgressDialog dialog = (ProgressDialog) getDialog();
+
+        dialog.setMessage(message);
+        dialog.setProgress(progress);
+        dialog.setMax(max);
+    }
+
+    @Override
+    public void onCancel(DialogInterface dialog) {
+        super.onCancel(dialog);
+
+        if (this.mOnCancelListener != null) {
+            this.mOnCancelListener.onCancel(dialog);
+        }
+    }
+
+    /**
+     * Creates dialog
+     */
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final Activity activity = getActivity();
+
+        ProgressDialog dialog = new ProgressDialog(activity);
+        dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
+        dialog.setCancelable(false);
+        dialog.setCanceledOnTouchOutside(false);
+
+        String message = getArguments().getString(ARG_MESSAGE);
+        int style = getArguments().getInt(ARG_STYLE);
+        boolean cancelable = getArguments().getBoolean(ARG_CANCELABLE);
+
+        dialog.setMessage(message);
+        dialog.setProgressStyle(style);
+
+        if (cancelable) {
+            dialog.setButton(DialogInterface.BUTTON_NEGATIVE,
+                    activity.getString(R.string.progress_cancel),
+                    new DialogInterface.OnClickListener() {
+                        @Override
+                        public void onClick(DialogInterface dialog, int which) {
+                            dialog.cancel();
+                        }
+                    });
+        }
+
+        // Disable the back button
+        OnKeyListener keyListener = new OnKeyListener() {
+
+            @Override
+            public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
+                if (keyCode == KeyEvent.KEYCODE_BACK) {
+                    return true;
+                }
+                return false;
+            }
+
+        };
+        dialog.setOnKeyListener(keyListener);
+
+        return dialog;
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/SetPassphraseDialogFragment.java

@@ -0,0 +1,186 @@
+/*
+ * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.dialog;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.RemoteException;
+import android.support.v4.app.DialogFragment;
+import android.view.KeyEvent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.WindowManager.LayoutParams;
+import android.view.inputmethod.EditorInfo;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.TextView.OnEditorActionListener;
+import android.widget.Toast;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.util.Log;
+
+public class SetPassphraseDialogFragment extends DialogFragment implements OnEditorActionListener {
+    private static final String ARG_MESSENGER = "messenger";
+    private static final String ARG_TITLE = "title";
+
+    public static final int MESSAGE_OKAY = 1;
+
+    public static final String MESSAGE_NEW_PASSPHRASE = "new_passphrase";
+
+    private Messenger mMessenger;
+    private EditText mPassphraseEditText;
+    private EditText mPassphraseAgainEditText;
+
+    /**
+     * Creates new instance of this dialog fragment
+     *
+     * @param title     title of dialog
+     * @param messenger to communicate back after setting the passphrase
+     * @return
+     */
+    public static SetPassphraseDialogFragment newInstance(Messenger messenger, int title) {
+        SetPassphraseDialogFragment frag = new SetPassphraseDialogFragment();
+        Bundle args = new Bundle();
+        args.putInt(ARG_TITLE, title);
+        args.putParcelable(ARG_MESSENGER, messenger);
+
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    /**
+     * Creates dialog
+     */
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final Activity activity = getActivity();
+
+        int title = getArguments().getInt(ARG_TITLE);
+        mMessenger = getArguments().getParcelable(ARG_MESSENGER);
+
+        AlertDialog.Builder alert = new AlertDialog.Builder(activity);
+
+        alert.setTitle(title);
+        alert.setMessage(R.string.enter_passphrase_twice);
+
+        LayoutInflater inflater = activity.getLayoutInflater();
+        View view = inflater.inflate(R.layout.passphrase_repeat_dialog, null);
+        alert.setView(view);
+
+        mPassphraseEditText = (EditText) view.findViewById(R.id.passphrase_passphrase);
+        mPassphraseAgainEditText = (EditText) view.findViewById(R.id.passphrase_passphrase_again);
+
+        alert.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
+
+            @Override
+            public void onClick(DialogInterface dialog, int id) {
+                dismiss();
+
+                String passphrase1 = mPassphraseEditText.getText().toString();
+                String passphrase2 = mPassphraseAgainEditText.getText().toString();
+                if (!passphrase1.equals(passphrase2)) {
+                    Toast.makeText(
+                            activity,
+                            getString(R.string.error_message,
+                                    getString(R.string.passphrases_do_not_match)), Toast.LENGTH_SHORT)
+                            .show();
+                    return;
+                }
+
+                if (passphrase1.equals("")) {
+                    Toast.makeText(
+                            activity,
+                            getString(R.string.error_message,
+                                    getString(R.string.passphrase_must_not_be_empty)),
+                            Toast.LENGTH_SHORT).show();
+                    return;
+                }
+
+                // return resulting data back to activity
+                Bundle data = new Bundle();
+                data.putString(MESSAGE_NEW_PASSPHRASE, passphrase1);
+
+                sendMessageToHandler(MESSAGE_OKAY, data);
+            }
+        });
+
+        alert.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
+
+            @Override
+            public void onClick(DialogInterface dialog, int id) {
+                dismiss();
+            }
+        });
+
+        return alert.create();
+    }
+
+    @Override
+    public void onActivityCreated(Bundle arg0) {
+        super.onActivityCreated(arg0);
+
+        // request focus and open soft keyboard
+        mPassphraseEditText.requestFocus();
+        getDialog().getWindow().setSoftInputMode(LayoutParams.SOFT_INPUT_STATE_VISIBLE);
+
+        mPassphraseAgainEditText.setOnEditorActionListener(this);
+    }
+
+    /**
+     * Associate the "done" button on the soft keyboard with the okay button in the view
+     */
+    @Override
+    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
+        if (EditorInfo.IME_ACTION_DONE == actionId) {
+            AlertDialog dialog = ((AlertDialog) getDialog());
+            Button bt = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
+
+            bt.performClick();
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Send message back to handler which is initialized in a activity
+     *
+     * @param what Message integer you want to send
+     */
+    private void sendMessageToHandler(Integer what, Bundle data) {
+        Message msg = Message.obtain();
+        msg.what = what;
+        if (data != null) {
+            msg.setData(data);
+        }
+
+        try {
+            mMessenger.send(msg);
+        } catch (RemoteException e) {
+            Log.w(Constants.TAG, "Exception sending message, Is handler present?", e);
+        } catch (NullPointerException e) {
+            Log.w(Constants.TAG, "Messenger is null!", e);
+        }
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/ShareNfcDialogFragment.java

@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.dialog;
+
+import android.annotation.TargetApi;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.nfc.NfcAdapter;
+import android.os.Build;
+import android.os.Bundle;
+import android.provider.Settings;
+import android.support.v4.app.DialogFragment;
+import android.support.v4.app.FragmentActivity;
+import org.sufficientlysecure.htmltextview.HtmlTextView;
+import org.sufficientlysecure.keychain.R;
+
+@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
+public class ShareNfcDialogFragment extends DialogFragment {
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static ShareNfcDialogFragment newInstance() {
+        ShareNfcDialogFragment frag = new ShareNfcDialogFragment();
+
+        return frag;
+    }
+
+    /**
+     * Creates dialog
+     */
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final FragmentActivity activity = getActivity();
+
+        AlertDialog.Builder alert = new AlertDialog.Builder(activity);
+
+        alert.setTitle(R.string.share_nfc_dialog);
+        alert.setCancelable(true);
+
+        alert.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int id) {
+                dismiss();
+            }
+        });
+
+        HtmlTextView textView = new HtmlTextView(getActivity());
+        textView.setPadding(8, 8, 8, 8);
+        alert.setView(textView);
+
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
+            textView.setText(getString(R.string.error) + ": "
+                    + getString(R.string.error_jelly_bean_needed));
+        } else {
+            // check if NFC Adapter is available
+            NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(getActivity());
+            if (nfcAdapter == null) {
+                textView.setText(getString(R.string.error) + ": "
+                        + getString(R.string.error_nfc_needed));
+            } else {
+                // nfc works...
+                textView.setHtmlFromRawResource(getActivity(), R.raw.nfc_beam_share);
+
+                alert.setNegativeButton(R.string.menu_beam_preferences,
+                        new DialogInterface.OnClickListener() {
+                            @Override
+                            public void onClick(DialogInterface dialog, int id) {
+                                Intent intentSettings = new Intent(
+                                        Settings.ACTION_NFCSHARING_SETTINGS);
+                                startActivity(intentSettings);
+                            }
+                        });
+            }
+        }
+
+        // no flickering when clicking textview for Android < 4
+        // aboutTextView.setTextColor(getResources().getColor(android.R.color.black));
+
+        return alert.create();
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/ShareQrCodeDialogFragment.java

@@ -0,0 +1,212 @@
+/*
+ * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.dialog;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.app.DialogFragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ImageView;
+import android.widget.TextView;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.util.QrCodeUtils;
+
+import java.util.ArrayList;
+
+public class ShareQrCodeDialogFragment extends DialogFragment {
+    private static final String ARG_KEY_URI = "uri";
+    private static final String ARG_FINGERPRINT_ONLY = "fingerprint_only";
+
+    private ImageView mImage;
+    private TextView mText;
+
+    private boolean mFingerprintOnly;
+
+    private ArrayList<String> mContentList;
+    private int mCounter;
+
+    private static final int QR_CODE_SIZE = 1000;
+
+    /**
+     * Creates new instance of this dialog fragment
+     */
+    public static ShareQrCodeDialogFragment newInstance(Uri dataUri, boolean fingerprintOnly) {
+        ShareQrCodeDialogFragment frag = new ShareQrCodeDialogFragment();
+        Bundle args = new Bundle();
+        args.putParcelable(ARG_KEY_URI, dataUri);
+        args.putBoolean(ARG_FINGERPRINT_ONLY, fingerprintOnly);
+
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    /**
+     * Creates dialog
+     */
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final Activity activity = getActivity();
+
+        Uri dataUri = getArguments().getParcelable(ARG_KEY_URI);
+        mFingerprintOnly = getArguments().getBoolean(ARG_FINGERPRINT_ONLY);
+
+        AlertDialog.Builder alert = new AlertDialog.Builder(getActivity());
+
+        alert.setTitle(R.string.share_qr_code_dialog_title);
+
+        LayoutInflater inflater = activity.getLayoutInflater();
+        View view = inflater.inflate(R.layout.share_qr_code_dialog, null);
+        alert.setView(view);
+
+        mImage = (ImageView) view.findViewById(R.id.share_qr_code_dialog_image);
+        mText = (TextView) view.findViewById(R.id.share_qr_code_dialog_text);
+
+        String content = null;
+        if (mFingerprintOnly) {
+            alert.setPositiveButton(R.string.btn_okay, null);
+
+            byte[] blob = (byte[]) ProviderHelper.getGenericData(
+                    getActivity(), KeyRings.buildUnifiedKeyRingUri(dataUri),
+                    KeyRings.FINGERPRINT, ProviderHelper.FIELD_TYPE_BLOB);
+            if(blob == null) {
+                // TODO error handling?!
+                return null;
+            }
+
+            String fingerprint = PgpKeyHelper.convertFingerprintToHex(blob);
+            mText.setText(getString(R.string.share_qr_code_dialog_fingerprint_text) + " " + fingerprint);
+            content = Constants.FINGERPRINT_SCHEME + ":" + fingerprint;
+            setQrCode(content);
+        } else {
+            mText.setText(R.string.share_qr_code_dialog_start);
+
+            // TODO works, but
+            long masterKeyId = ProviderHelper.getMasterKeyId(getActivity(), dataUri);
+            // get public keyring as ascii armored string
+            ArrayList<String> keyringArmored = ProviderHelper.getKeyRingsAsArmoredString(
+                    getActivity(), new long[] { masterKeyId });
+
+            // TODO: binary?
+
+            content = keyringArmored.get(0);
+
+            // OnClickListener are set in onResume to prevent automatic dismissing of Dialogs
+            // http://bit.ly/O5vfaR
+            alert.setPositiveButton(R.string.btn_next, null);
+            alert.setNegativeButton(android.R.string.cancel, null);
+
+            mContentList = splitString(content, 1000);
+
+            // start with first
+            mCounter = 0;
+            updatePartsQrCode();
+        }
+
+        return alert.create();
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+
+        if (!mFingerprintOnly) {
+            AlertDialog alertDialog = (AlertDialog) getDialog();
+            final Button backButton = alertDialog.getButton(AlertDialog.BUTTON_NEGATIVE);
+            final Button nextButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
+
+            backButton.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    if (mCounter > 0) {
+                        mCounter--;
+                        updatePartsQrCode();
+                        updateDialog(backButton, nextButton);
+                    } else {
+                        dismiss();
+                    }
+                }
+            });
+            nextButton.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+
+                    if (mCounter < mContentList.size() - 1) {
+                        mCounter++;
+                        updatePartsQrCode();
+                        updateDialog(backButton, nextButton);
+                    } else {
+                        dismiss();
+                    }
+                }
+            });
+        }
+    }
+
+    private void updatePartsQrCode() {
+        // Content: <counter>,<size>,<content>
+        setQrCode(mCounter + "," + mContentList.size() + "," + mContentList.get(mCounter));
+    }
+
+    private void setQrCode(String data) {
+        mImage.setImageBitmap(QrCodeUtils.getQRCodeBitmap(data, QR_CODE_SIZE));
+    }
+
+    private void updateDialog(Button backButton, Button nextButton) {
+        if (mCounter == 0) {
+            backButton.setText(android.R.string.cancel);
+        } else {
+            backButton.setText(R.string.btn_back);
+        }
+        if (mCounter == mContentList.size() - 1) {
+            nextButton.setText(android.R.string.ok);
+        } else {
+            nextButton.setText(R.string.btn_next);
+        }
+
+        mText.setText(getResources().getString(R.string.share_qr_code_dialog_progress,
+                mCounter + 1, mContentList.size()));
+    }
+
+    /**
+     * Split String by number of characters
+     *
+     * @param text
+     * @param size
+     * @return
+     */
+    private ArrayList<String> splitString(String text, int size) {
+        ArrayList<String> strings = new ArrayList<String>();
+        int index = 0;
+        while (index < text.length()) {
+            strings.add(text.substring(index, Math.min(index + size, text.length())));
+            index += size;
+        }
+
+        return strings;
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/Editor.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui.widget;
+
+public interface Editor {
+    public interface EditorListener {
+        public void onDeleted(Editor editor, boolean wasNewItem);
+        public void onEdited();
+    }
+
+    public void setEditorListener(EditorListener listener);
+    public boolean needsSaving();
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/FixedListView.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.widget;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.widget.ListView;
+
+/**
+ * Automatically calculate height of ListView based on contained items. This enables to put this
+ * ListView into a ScrollView without messing up.
+ * <p/>
+ * from
+ * http://stackoverflow.com/questions/2419246/how-do-i-create-a-listview-thats-not-in-a-scrollview-
+ * or-has-the-scrollview-dis
+ */
+public class FixedListView extends ListView {
+
+    public FixedListView(Context context) {
+        super(context);
+    }
+
+    public FixedListView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    public FixedListView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        // Calculate height of the entire list by providing a very large
+        // height hint. But do not use the highest 2 bits of this integer;
+        // those are reserved for the MeasureSpec mode.
+        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
+        super.onMeasure(widthMeasureSpec, expandSpec);
+    }
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/FoldableLinearLayout.java

@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.widget;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.animation.AlphaAnimation;
+import android.view.animation.Animation;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import com.beardedhen.androidbootstrap.FontAwesomeText;
+import org.sufficientlysecure.keychain.R;
+
+/**
+ * Class representing a LinearLayout that can fold and hide it's content when pressed
+ * To use just add the following to your xml layout
+
+ <org.sufficientlysecure.keychain.ui.widget.FoldableLinearLayout
+     android:layout_width="wrap_content"
+     android:layout_height="wrap_content"
+     custom:foldedLabel="@string/TEXT_TO_DISPLAY_WHEN_FOLDED"
+     custom:unFoldedLabel="@string/TEXT_TO_DISPLAY_WHEN_UNFOLDED"
+     custom:foldedIcon="ICON_NAME_FROM_FontAwesomeText_TO_USE_WHEN_FOLDED"
+     custom:unFoldedIcon="ICON_NAME_FROM_FontAwesomeText_TO_USE_WHEN_UNFOLDED">
+
+    <include layout="@layout/ELEMENTS_TO_BE_FOLDED"/>
+
+ </org.sufficientlysecure.keychain.ui.widget.FoldableLinearLayout>
+
+ */
+public class FoldableLinearLayout extends LinearLayout {
+
+    private FontAwesomeText mFoldableIcon;
+    private boolean mFolded;
+    private boolean mHasMigrated = false;
+    private Integer mShortAnimationDuration = null;
+    private TextView mFoldableTextView = null;
+    private LinearLayout mFoldableContainer = null;
+    private View mFoldableLayout = null;
+
+    private String mFoldedIconName;
+    private String mUnFoldedIconName;
+    private String mFoldedLabel;
+    private String mUnFoldedLabel;
+
+    public FoldableLinearLayout(Context context) {
+        super(context);
+        processAttributes(context, null);
+    }
+
+    public FoldableLinearLayout(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        processAttributes(context, attrs);
+    }
+
+    public FoldableLinearLayout(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs);
+        processAttributes(context, attrs);
+    }
+
+    /**
+     * Load given attributes to inner variables,
+     * @param context
+     * @param attrs
+     */
+    private void processAttributes(Context context, AttributeSet attrs) {
+        if (attrs != null) {
+            TypedArray a = context.obtainStyledAttributes(attrs,
+                    R.styleable.FoldableLinearLayout, 0, 0);
+            mFoldedIconName = a.getString(R.styleable.FoldableLinearLayout_foldedIcon);
+            mUnFoldedIconName = a.getString(R.styleable.FoldableLinearLayout_unFoldedIcon);
+            mFoldedLabel = a.getString(R.styleable.FoldableLinearLayout_foldedLabel);
+            mUnFoldedLabel = a.getString(R.styleable.FoldableLinearLayout_unFoldedLabel);
+            a.recycle();
+        }
+        // If any attribute isn't found then set a default one
+        mFoldedIconName = (mFoldedIconName == null) ? "fa-chevron-right" : mFoldedIconName;
+        mUnFoldedIconName = (mUnFoldedIconName == null) ? "fa-chevron-down" : mUnFoldedIconName;
+        mFoldedLabel = (mFoldedLabel == null) ? context.getString(R.id.none) : mFoldedLabel;
+        mUnFoldedLabel = (mUnFoldedLabel == null) ? context.getString(R.id.none) : mUnFoldedLabel;
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        // if the migration has already happened
+        // there is no need to move any children
+        if (!mHasMigrated) {
+            migrateChildrenToContainer();
+            mHasMigrated = true;
+        }
+
+        initialiseInnerViews();
+
+        super.onFinishInflate();
+    }
+
+    /**
+     * Migrates Child views as declared in xml to the inner foldableContainer
+     */
+    private void migrateChildrenToContainer() {
+        // Collect children of FoldableLinearLayout as declared in XML
+        int childNum = getChildCount();
+        View[] children = new View[childNum];
+
+        for (int i = 0; i < childNum; i++) {
+            children[i] = getChildAt(i);
+        }
+        if (children[0].getId() == R.id.foldableControl) {
+
+        }
+
+        // remove all of them from FoldableLinearLayout
+        detachAllViewsFromParent();
+
+        // Inflate the inner foldable_linearlayout.xml
+        LayoutInflater inflator = (LayoutInflater) getContext().getSystemService(
+                Context.LAYOUT_INFLATER_SERVICE);
+
+        mFoldableLayout = inflator.inflate(R.layout.foldable_linearlayout, this, true);
+        mFoldableContainer = (LinearLayout) mFoldableLayout.findViewById(R.id.foldableContainer);
+
+        // Push previously collected children into foldableContainer.
+        for (int i = 0; i < childNum; i++) {
+            addView(children[i]);
+        }
+    }
+
+    private void initialiseInnerViews() {
+        mFoldableIcon = (FontAwesomeText) mFoldableLayout.findViewById(R.id.foldableIcon);
+        mFoldableIcon.setIcon(mFoldedIconName);
+        mFoldableTextView = (TextView) mFoldableLayout.findViewById(R.id.foldableText);
+        mFoldableTextView.setText(mFoldedLabel);
+
+        // retrieve and cache the system's short animation time
+        mShortAnimationDuration = getResources().getInteger(android.R.integer.config_shortAnimTime);
+
+        LinearLayout foldableControl = (LinearLayout) mFoldableLayout.findViewById(R.id.foldableControl);
+        foldableControl.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                mFolded = !mFolded;
+                if (mFolded) {
+                    mFoldableIcon.setIcon(mUnFoldedIconName);
+                    mFoldableContainer.setVisibility(View.VISIBLE);
+                    AlphaAnimation animation = new AlphaAnimation(0f, 1f);
+                    animation.setDuration(mShortAnimationDuration);
+                    mFoldableContainer.startAnimation(animation);
+                    mFoldableTextView.setText(mUnFoldedLabel);
+
+                } else {
+                    mFoldableIcon.setIcon(mFoldedIconName);
+                    AlphaAnimation animation = new AlphaAnimation(1f, 0f);
+                    animation.setDuration(mShortAnimationDuration);
+                    animation.setAnimationListener(new Animation.AnimationListener() {
+                        @Override
+                        public void onAnimationStart(Animation animation) { }
+
+                        @Override
+                        public void onAnimationEnd(Animation animation) {
+                            // making sure that at the end the container is completely removed from view
+                            mFoldableContainer.setVisibility(View.GONE);
+                        }
+
+                        @Override
+                        public void onAnimationRepeat(Animation animation) { }
+                    });
+                    mFoldableContainer.startAnimation(animation);
+                    mFoldableTextView.setText(mFoldedLabel);
+                }
+            }
+        });
+
+    }
+
+    /**
+     * Adds provided child view to foldableContainer View
+     * @param child
+     */
+    @Override
+    public void addView(View child) {
+        if (mFoldableContainer != null) {
+            mFoldableContainer.addView(child);
+        }
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/IntegerListPreference.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright 2010 Google Inc.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package org.sufficientlysecure.keychain.ui.widget;
+
+import android.content.Context;
+import android.preference.ListPreference;
+import android.util.AttributeSet;
+
+/**
+ * A list preference which persists its values as integers instead of strings. Code reading the
+ * values should use {@link android.content.SharedPreferences#getInt}. When using XML-declared
+ * arrays for entry values, the arrays should be regular string arrays containing valid integer
+ * values.
+ *
+ * @author Rodrigo Damazio
+ */
+public class IntegerListPreference extends ListPreference {
+
+    public IntegerListPreference(Context context) {
+        super(context);
+
+        verifyEntryValues(null);
+    }
+
+    public IntegerListPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        verifyEntryValues(null);
+    }
+
+    @Override
+    public void setEntryValues(CharSequence[] entryValues) {
+        CharSequence[] oldValues = getEntryValues();
+        super.setEntryValues(entryValues);
+        verifyEntryValues(oldValues);
+    }
+
+    @Override
+    public void setEntryValues(int entryValuesResId) {
+        CharSequence[] oldValues = getEntryValues();
+        super.setEntryValues(entryValuesResId);
+        verifyEntryValues(oldValues);
+    }
+
+    @Override
+    protected String getPersistedString(String defaultReturnValue) {
+        // During initial load, there's no known default value
+        int defaultIntegerValue = Integer.MIN_VALUE;
+        if (defaultReturnValue != null) {
+            defaultIntegerValue = Integer.parseInt(defaultReturnValue);
+        }
+
+        // When the list preference asks us to read a string, instead read an
+        // integer.
+        int value = getPersistedInt(defaultIntegerValue);
+        return Integer.toString(value);
+    }
+
+    @Override
+    protected boolean persistString(String value) {
+        // When asked to save a string, instead save an integer
+        return persistInt(Integer.parseInt(value));
+    }
+
+    private void verifyEntryValues(CharSequence[] oldValues) {
+        CharSequence[] entryValues = getEntryValues();
+        if (entryValues == null) {
+            return;
+        }
+
+        for (CharSequence entryValue : entryValues) {
+            try {
+                Integer.parseInt(entryValue.toString());
+            } catch (NumberFormatException nfe) {
+                super.setEntryValues(oldValues);
+                throw nfe;
+            }
+        }
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/KeyEditor.java

@@ -0,0 +1,377 @@
+/*
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui.widget;
+
+import android.annotation.TargetApi;
+import android.app.DatePickerDialog;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.text.format.DateUtils;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.CheckBox;
+import android.widget.CompoundButton;
+import android.widget.DatePicker;
+import android.widget.LinearLayout;
+import android.widget.TableLayout;
+import android.widget.TableRow;
+import android.widget.TextView;
+
+import com.beardedhen.androidbootstrap.BootstrapButton;
+
+import org.spongycastle.bcpg.sig.KeyFlags;
+import org.spongycastle.openpgp.PGPPublicKey;
+import org.spongycastle.openpgp.PGPSecretKey;
+
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.util.Choice;
+
+import java.text.DateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.GregorianCalendar;
+import java.util.TimeZone;
+import java.util.Vector;
+
+public class KeyEditor extends LinearLayout implements Editor, OnClickListener {
+    private PGPSecretKey mKey;
+
+    private EditorListener mEditorListener = null;
+
+    private boolean mIsMasterKey;
+    BootstrapButton mDeleteButton;
+    TextView mAlgorithm;
+    TextView mKeyId;
+    TextView mCreationDate;
+    BootstrapButton mExpiryDateButton;
+    GregorianCalendar mCreatedDate;
+    GregorianCalendar mExpiryDate;
+    GregorianCalendar mOriginalExpiryDate = null;
+    CheckBox mChkCertify;
+    CheckBox mChkSign;
+    CheckBox mChkEncrypt;
+    CheckBox mChkAuthenticate;
+    int mUsage;
+    int mOriginalUsage;
+    boolean mIsNewKey;
+
+    private CheckBox.OnCheckedChangeListener mCheckChanged = new CheckBox.OnCheckedChangeListener()
+    {
+        @Override
+        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
+        {
+            if (mEditorListener != null) {
+                mEditorListener.onEdited();
+            }
+        }
+    };
+
+
+    private int mDatePickerResultCount = 0;
+    private DatePickerDialog.OnDateSetListener mExpiryDateSetListener =
+            new DatePickerDialog.OnDateSetListener() {
+        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
+            // Note: Ignore results after the first one - android sends multiples.
+            if (mDatePickerResultCount++ == 0) {
+                GregorianCalendar date = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
+                date.set(year, monthOfYear, dayOfMonth);
+                if (mOriginalExpiryDate != null) {
+                    long numDays = (date.getTimeInMillis() / 86400000) -
+                        (mOriginalExpiryDate.getTimeInMillis() / 86400000);
+                    if (numDays == 0) {
+                        setExpiryDate(mOriginalExpiryDate);
+                    } else {
+                        setExpiryDate(date);
+                    }
+                } else {
+                    setExpiryDate(date);
+                }
+                if (mEditorListener != null) {
+                    mEditorListener.onEdited();
+                }
+            }
+        }
+    };
+
+    public KeyEditor(Context context) {
+        super(context);
+    }
+
+    public KeyEditor(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        setDrawingCacheEnabled(true);
+        setAlwaysDrawnWithCacheEnabled(true);
+
+        mAlgorithm = (TextView) findViewById(R.id.algorithm);
+        mKeyId = (TextView) findViewById(R.id.keyId);
+        mCreationDate = (TextView) findViewById(R.id.creation);
+        mExpiryDateButton = (BootstrapButton) findViewById(R.id.expiry);
+
+        mDeleteButton = (BootstrapButton) findViewById(R.id.delete);
+        mDeleteButton.setOnClickListener(this);
+        mChkCertify =  (CheckBox) findViewById(R.id.chkCertify);
+        mChkCertify.setOnCheckedChangeListener(mCheckChanged);
+        mChkSign =  (CheckBox) findViewById(R.id.chkSign);
+        mChkSign.setOnCheckedChangeListener(mCheckChanged);
+        mChkEncrypt =  (CheckBox) findViewById(R.id.chkEncrypt);
+        mChkEncrypt.setOnCheckedChangeListener(mCheckChanged);
+        mChkAuthenticate =  (CheckBox) findViewById(R.id.chkAuthenticate);
+        mChkAuthenticate.setOnCheckedChangeListener(mCheckChanged);
+
+        setExpiryDate(null);
+
+        mExpiryDateButton.setOnClickListener(new OnClickListener() {
+            @TargetApi(11)
+            public void onClick(View v) {
+                GregorianCalendar date = mExpiryDate;
+                if (date == null) {
+                    date = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
+                }
+                /*
+                 * Using custom DatePickerDialog which overrides the setTitle because
+                 * the DatePickerDialog title is buggy (unix warparound bug).
+                 * See: https://code.google.com/p/android/issues/detail?id=49066
+                 */
+                DatePickerDialog dialog = new ExpiryDatePickerDialog(getContext(),
+                        mExpiryDateSetListener, date.get(Calendar.YEAR), date.get(Calendar.MONTH),
+                        date.get(Calendar.DAY_OF_MONTH));
+                mDatePickerResultCount = 0;
+                dialog.setCancelable(true);
+                dialog.setButton(Dialog.BUTTON_NEGATIVE,
+                        getContext().getString(R.string.btn_no_date),
+                        new DialogInterface.OnClickListener() {
+                            public void onClick(DialogInterface dialog, int which) {
+                                // Note: Ignore results after the first one - android sends multiples.
+                                if (mDatePickerResultCount++ == 0) {
+                                    setExpiryDate(null);
+                                    if (mEditorListener != null) {
+                                        mEditorListener.onEdited();
+                                    }
+                                }
+                            }
+                        });
+
+                // setCalendarViewShown() is supported from API 11 onwards.
+                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB) {
+                    // Hide calendarView in tablets because of the unix warparound bug.
+                    dialog.getDatePicker().setCalendarViewShown(false);
+                }
+                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB) {
+                    if (dialog != null && mCreatedDate != null) {
+                        dialog.getDatePicker()
+                                .setMinDate(
+                                        mCreatedDate.getTime().getTime() + DateUtils.DAY_IN_MILLIS);
+                    } else {
+                        //When created date isn't available
+                        dialog.getDatePicker().setMinDate(date.getTime().getTime() + DateUtils.DAY_IN_MILLIS);
+                    }
+                }
+
+                dialog.show();
+            }
+        });
+
+        super.onFinishInflate();
+    }
+
+    public void setCanBeEdited(boolean canBeEdited) {
+        if (!canBeEdited) {
+            mDeleteButton.setVisibility(View.INVISIBLE);
+            mExpiryDateButton.setEnabled(false);
+            mChkSign.setEnabled(false); //certify is always disabled
+            mChkEncrypt.setEnabled(false);
+            mChkAuthenticate.setEnabled(false);
+        }
+    }
+
+    public void setValue(PGPSecretKey key, boolean isMasterKey, int usage, boolean isNewKey) {
+        mKey = key;
+
+        mIsMasterKey = isMasterKey;
+        if (mIsMasterKey) {
+            mDeleteButton.setVisibility(View.INVISIBLE);
+        }
+
+        mAlgorithm.setText(PgpKeyHelper.getAlgorithmInfo(key));
+        String keyIdStr = PgpKeyHelper.convertKeyIdToHex(key.getKeyID());
+        mKeyId.setText(keyIdStr);
+
+        Vector<Choice> choices = new Vector<Choice>();
+        boolean isElGamalKey = (key.getPublicKey().getAlgorithm() == PGPPublicKey.ELGAMAL_ENCRYPT);
+        boolean isDSAKey = (key.getPublicKey().getAlgorithm() == PGPPublicKey.DSA);
+        if (isElGamalKey) {
+            mChkSign.setVisibility(View.INVISIBLE);
+            TableLayout table = (TableLayout) findViewById(R.id.table_keylayout);
+            TableRow row = (TableRow) findViewById(R.id.row_sign);
+            table.removeView(row);
+        }
+        if (isDSAKey) {
+            mChkEncrypt.setVisibility(View.INVISIBLE);
+            TableLayout table = (TableLayout) findViewById(R.id.table_keylayout);
+            TableRow row = (TableRow) findViewById(R.id.row_encrypt);
+            table.removeView(row);
+        }
+        if (!mIsMasterKey) {
+            mChkCertify.setVisibility(View.INVISIBLE);
+            TableLayout table = (TableLayout) findViewById(R.id.table_keylayout);
+            TableRow row = (TableRow) findViewById(R.id.row_certify);
+            table.removeView(row);
+        } else {
+            TextView mLabelUsage2 = (TextView) findViewById(R.id.label_usage2);
+            mLabelUsage2.setVisibility(View.INVISIBLE);
+        }
+
+        int selectId = 0;
+        mIsNewKey = isNewKey;
+        if (isNewKey) {
+            mUsage = usage;
+            mChkCertify.setChecked((usage & KeyFlags.CERTIFY_OTHER) == KeyFlags.CERTIFY_OTHER);
+            mChkSign.setChecked((usage & KeyFlags.SIGN_DATA) == KeyFlags.SIGN_DATA);
+            mChkEncrypt.setChecked(((usage & KeyFlags.ENCRYPT_COMMS) == KeyFlags.ENCRYPT_COMMS) ||
+                    ((usage & KeyFlags.ENCRYPT_STORAGE) == KeyFlags.ENCRYPT_STORAGE));
+            mChkAuthenticate.setChecked((usage & KeyFlags.AUTHENTICATION) == KeyFlags.AUTHENTICATION);
+        } else {
+            mUsage = PgpKeyHelper.getKeyUsage(key);
+            mOriginalUsage = mUsage;
+            if (key.isMasterKey()) {
+                mChkCertify.setChecked(PgpKeyHelper.isCertificationKey(key));
+            }
+            mChkSign.setChecked(PgpKeyHelper.isSigningKey(key));
+            mChkEncrypt.setChecked(PgpKeyHelper.isEncryptionKey(key));
+            mChkAuthenticate.setChecked(PgpKeyHelper.isAuthenticationKey(key));
+        }
+
+        GregorianCalendar cal = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
+        cal.setTime(PgpKeyHelper.getCreationDate(key));
+        setCreatedDate(cal);
+        cal = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
+        Date expiryDate = PgpKeyHelper.getExpiryDate(key);
+        if (expiryDate == null) {
+            setExpiryDate(null);
+        } else {
+            cal.setTime(PgpKeyHelper.getExpiryDate(key));
+            setExpiryDate(cal);
+            mOriginalExpiryDate = cal;
+        }
+
+    }
+
+    public PGPSecretKey getValue() {
+        return mKey;
+    }
+
+    public void onClick(View v) {
+        final ViewGroup parent = (ViewGroup) getParent();
+        if (v == mDeleteButton) {
+            parent.removeView(this);
+            if (mEditorListener != null) {
+                mEditorListener.onDeleted(this, mIsNewKey);
+            }
+        }
+    }
+
+    public void setEditorListener(EditorListener listener) {
+        mEditorListener = listener;
+    }
+
+    private void setCreatedDate(GregorianCalendar date) {
+        mCreatedDate = date;
+        if (date == null) {
+            mCreationDate.setText(getContext().getString(R.string.none));
+        } else {
+            mCreationDate.setText(DateFormat.getDateInstance().format(date.getTime()));
+        }
+    }
+
+    private void setExpiryDate(GregorianCalendar date) {
+        mExpiryDate = date;
+        if (date == null) {
+            mExpiryDateButton.setText(getContext().getString(R.string.none));
+        } else {
+            mExpiryDateButton.setText(DateFormat.getDateInstance().format(date.getTime()));
+        }
+    }
+
+    public GregorianCalendar getExpiryDate() {
+        return mExpiryDate;
+    }
+
+    public int getUsage() {
+        mUsage  = (mUsage & ~KeyFlags.CERTIFY_OTHER) |
+            (mChkCertify.isChecked() ? KeyFlags.CERTIFY_OTHER : 0);
+        mUsage  = (mUsage & ~KeyFlags.SIGN_DATA) |
+            (mChkSign.isChecked() ? KeyFlags.SIGN_DATA : 0);
+        mUsage  = (mUsage & ~KeyFlags.ENCRYPT_COMMS) |
+            (mChkEncrypt.isChecked() ? KeyFlags.ENCRYPT_COMMS : 0);
+        mUsage  = (mUsage & ~KeyFlags.ENCRYPT_STORAGE) |
+            (mChkEncrypt.isChecked() ? KeyFlags.ENCRYPT_STORAGE : 0);
+        mUsage  = (mUsage & ~KeyFlags.AUTHENTICATION) |
+            (mChkAuthenticate.isChecked() ? KeyFlags.AUTHENTICATION : 0);
+
+        return mUsage;
+    }
+
+    public boolean needsSaving() {
+        if (mIsNewKey) {
+            return true;
+        }
+
+        boolean retval = (getUsage() != mOriginalUsage);
+
+        boolean dateChanged;
+        boolean mOEDNull = (mOriginalExpiryDate == null);
+        boolean mEDNull = (mExpiryDate == null);
+        if (mOEDNull != mEDNull) {
+            dateChanged = true;
+        } else {
+            if (mOEDNull) {
+                //both null, no change
+                dateChanged = false;
+            } else {
+                dateChanged = ((mExpiryDate.compareTo(mOriginalExpiryDate)) != 0);
+            }
+        }
+        retval |= dateChanged;
+
+        return retval;
+    }
+
+    public boolean getIsNewKey() {
+        return mIsNewKey;
+    }
+}
+
+class ExpiryDatePickerDialog extends DatePickerDialog {
+
+    public ExpiryDatePickerDialog(Context context, OnDateSetListener callBack,
+                                  int year, int monthOfYear, int dayOfMonth) {
+        super(context, callBack, year, monthOfYear, dayOfMonth);
+    }
+
+    //Set permanent title.
+    public void setTitle(CharSequence title) {
+        super.setTitle(getContext().getString(R.string.expiry_date_dialog_title));
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/KeyServerEditor.java

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui.widget;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import com.beardedhen.androidbootstrap.BootstrapButton;
+import org.sufficientlysecure.keychain.R;
+
+public class KeyServerEditor extends LinearLayout implements Editor, OnClickListener {
+    private EditorListener mEditorListener = null;
+
+    BootstrapButton mDeleteButton;
+    TextView mServer;
+
+    public KeyServerEditor(Context context) {
+        super(context);
+    }
+
+    public KeyServerEditor(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        setDrawingCacheEnabled(true);
+        setAlwaysDrawnWithCacheEnabled(true);
+
+        mServer = (TextView) findViewById(R.id.server);
+
+        mDeleteButton = (BootstrapButton) findViewById(R.id.delete);
+        mDeleteButton.setOnClickListener(this);
+
+        super.onFinishInflate();
+    }
+
+    public void setValue(String value) {
+        mServer.setText(value);
+    }
+
+    public String getValue() {
+        return mServer.getText().toString().trim();
+    }
+
+    public void onClick(View v) {
+        final ViewGroup parent = (ViewGroup) getParent();
+        if (v == mDeleteButton) {
+            parent.removeView(this);
+            if (mEditorListener != null) {
+                mEditorListener.onDeleted(this, false);
+            }
+        }
+    }
+
+    @Override
+    public boolean needsSaving() {
+        return false;
+    }
+
+    public void setEditorListener(EditorListener listener) {
+        mEditorListener = listener;
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/SectionView.java

@@ -0,0 +1,429 @@
+/*
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui.widget;
+
+import android.app.ProgressDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Message;
+import android.os.Messenger;
+import android.support.v7.app.ActionBarActivity;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import com.beardedhen.androidbootstrap.BootstrapButton;
+
+import org.spongycastle.openpgp.PGPKeyFlags;
+import org.spongycastle.openpgp.PGPSecretKey;
+
+import org.sufficientlysecure.keychain.Id;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpConversionHelper;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.PassphraseCacheService;
+import org.sufficientlysecure.keychain.ui.dialog.CreateKeyDialogFragment;
+import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
+import org.sufficientlysecure.keychain.ui.widget.Editor.EditorListener;
+import org.sufficientlysecure.keychain.util.Choice;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Vector;
+
+public class SectionView extends LinearLayout implements OnClickListener, EditorListener, Editor {
+    private LayoutInflater mInflater;
+    private BootstrapButton mPlusButton;
+    private ViewGroup mEditors;
+    private TextView mTitle;
+    private int mType = 0;
+    private EditorListener mEditorListener = null;
+
+    private Choice mNewKeyAlgorithmChoice;
+    private int mNewKeySize;
+    private boolean mOldItemDeleted = false;
+    private ArrayList<String> mDeletedIDs = new ArrayList<String>();
+    private ArrayList<PGPSecretKey> mDeletedKeys = new ArrayList<PGPSecretKey>();
+    private boolean mCanBeEdited = true;
+
+    private ActionBarActivity mActivity;
+
+    private ProgressDialogFragment mGeneratingDialog;
+
+    public void setEditorListener(EditorListener listener) {
+        mEditorListener = listener;
+    }
+
+    public SectionView(Context context) {
+        super(context);
+        mActivity = (ActionBarActivity) context;
+    }
+
+    public SectionView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        mActivity = (ActionBarActivity) context;
+    }
+
+    public ViewGroup getEditors() {
+        return mEditors;
+    }
+
+    public void setType(int type) {
+        mType = type;
+        switch (type) {
+            case Id.type.user_id: {
+                mTitle.setText(R.string.section_user_ids);
+                break;
+            }
+
+            case Id.type.key: {
+                mTitle.setText(R.string.section_keys);
+                break;
+            }
+
+            default: {
+                break;
+            }
+        }
+    }
+
+    public void setCanBeEdited(boolean canBeEdited) {
+        mCanBeEdited = canBeEdited;
+        if (!mCanBeEdited) {
+            mPlusButton.setVisibility(View.INVISIBLE);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    protected void onFinishInflate() {
+        mInflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+
+        setDrawingCacheEnabled(true);
+        setAlwaysDrawnWithCacheEnabled(true);
+
+        mPlusButton = (BootstrapButton) findViewById(R.id.plusbutton);
+        mPlusButton.setOnClickListener(this);
+
+        mEditors = (ViewGroup) findViewById(R.id.editors);
+        mTitle = (TextView) findViewById(R.id.title);
+
+        updateEditorsVisible();
+        super.onFinishInflate();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public void onDeleted(Editor editor, boolean wasNewItem) {
+        mOldItemDeleted |= !wasNewItem;
+        if (mOldItemDeleted) {
+            if (mType == Id.type.user_id) {
+                mDeletedIDs.add(((UserIdEditor) editor).getOriginalID());
+            } else if (mType == Id.type.key) {
+                mDeletedKeys.add(((KeyEditor) editor).getValue());
+            }
+        }
+        this.updateEditorsVisible();
+        if (mEditorListener != null) {
+            mEditorListener.onEdited();
+        }
+    }
+
+    @Override
+    public void onEdited() {
+        if (mEditorListener != null) {
+            mEditorListener.onEdited();
+        }
+    }
+
+    protected void updateEditorsVisible() {
+        final boolean hasChildren = mEditors.getChildCount() > 0;
+        mEditors.setVisibility(hasChildren ? View.VISIBLE : View.GONE);
+    }
+
+    public boolean needsSaving() {
+        //check each view for needs saving, take account of deleted items
+        boolean ret = mOldItemDeleted;
+        for (int i = 0; i < mEditors.getChildCount(); ++i) {
+            Editor editor = (Editor) mEditors.getChildAt(i);
+            ret |= editor.needsSaving();
+            if (mType == Id.type.user_id) {
+                ret |= ((UserIdEditor) editor).primarySwapped();
+            }
+        }
+        return ret;
+    }
+
+    public boolean primaryChanged() {
+        boolean ret = false;
+        for (int i = 0; i < mEditors.getChildCount(); ++i) {
+            Editor editor = (Editor) mEditors.getChildAt(i);
+            if (mType == Id.type.user_id) {
+                ret |= ((UserIdEditor) editor).primarySwapped();
+            }
+        }
+        return ret;
+    }
+
+    public String getOriginalPrimaryID() {
+        //NB: this will have to change when we change how Primary IDs are chosen, and so we need to be
+        //    careful about where Master key capabilities are stored... multiple primaries and
+        //    revoked ones make this harder than the simple case we are continuing to assume here
+        for (int i = 0; i < mEditors.getChildCount(); ++i) {
+            Editor editor = (Editor) mEditors.getChildAt(i);
+            if (mType == Id.type.user_id) {
+                if (((UserIdEditor) editor).getIsOriginallyMainUserID()) {
+                    return ((UserIdEditor) editor).getOriginalID();
+                }
+            }
+        }
+        return null;
+    }
+
+    public ArrayList<String> getOriginalIDs() {
+        ArrayList<String> orig = new ArrayList<String>();
+        if (mType == Id.type.user_id) {
+            for (int i = 0; i < mEditors.getChildCount(); ++i) {
+                UserIdEditor editor = (UserIdEditor) mEditors.getChildAt(i);
+                if (editor.isMainUserId()) {
+                    orig.add(0, editor.getOriginalID());
+                } else {
+                    orig.add(editor.getOriginalID());
+                }
+            }
+            return orig;
+        } else {
+            return null;
+        }
+    }
+
+    public ArrayList<String> getDeletedIDs() {
+        return mDeletedIDs;
+    }
+
+    public ArrayList<PGPSecretKey> getDeletedKeys() {
+        return mDeletedKeys;
+    }
+
+    public List<Boolean> getNeedsSavingArray() {
+        ArrayList<Boolean> mList = new ArrayList<Boolean>();
+        for (int i = 0; i < mEditors.getChildCount(); ++i) {
+            Editor editor = (Editor) mEditors.getChildAt(i);
+            mList.add(editor.needsSaving());
+        }
+        return mList;
+    }
+
+    public List<Boolean> getNewIDFlags() {
+        ArrayList<Boolean> mList = new ArrayList<Boolean>();
+        for (int i = 0; i < mEditors.getChildCount(); ++i) {
+            UserIdEditor editor = (UserIdEditor) mEditors.getChildAt(i);
+            if (editor.isMainUserId()) {
+                mList.add(0, editor.getIsNewID());
+            } else {
+                mList.add(editor.getIsNewID());
+            }
+        }
+        return mList;
+    }
+
+    public List<Boolean> getNewKeysArray() {
+        ArrayList<Boolean> mList = new ArrayList<Boolean>();
+        if (mType == Id.type.key) {
+            for (int i = 0; i < mEditors.getChildCount(); ++i) {
+                KeyEditor editor = (KeyEditor) mEditors.getChildAt(i);
+                mList.add(editor.getIsNewKey());
+            }
+        }
+        return mList;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public void onClick(View v) {
+        if (mCanBeEdited) {
+            switch (mType) {
+                case Id.type.user_id: {
+                    UserIdEditor view = (UserIdEditor) mInflater.inflate(
+                            R.layout.edit_key_user_id_item, mEditors, false);
+                    view.setEditorListener(this);
+                    view.setValue("", mEditors.getChildCount() == 0, true);
+                    mEditors.addView(view);
+                    if (mEditorListener != null) {
+                        mEditorListener.onEdited();
+                    }
+                    break;
+                }
+
+                case Id.type.key: {
+                    CreateKeyDialogFragment mCreateKeyDialogFragment =
+                            CreateKeyDialogFragment.newInstance(mEditors.getChildCount());
+                    mCreateKeyDialogFragment
+                            .setOnAlgorithmSelectedListener(
+                                    new CreateKeyDialogFragment.OnAlgorithmSelectedListener() {
+                                        @Override
+                                        public void onAlgorithmSelected(Choice algorithmChoice, int keySize) {
+                                            mNewKeyAlgorithmChoice = algorithmChoice;
+                                            mNewKeySize = keySize;
+                                            createKey();
+                                        }
+                                    });
+                    mCreateKeyDialogFragment.show(mActivity.getSupportFragmentManager(), "createKeyDialog");
+                    break;
+                }
+
+                default: {
+                    break;
+                }
+            }
+            this.updateEditorsVisible();
+        }
+    }
+
+    public void setUserIds(Vector<String> list) {
+        if (mType != Id.type.user_id) {
+            return;
+        }
+
+        mEditors.removeAllViews();
+        for (String userId : list) {
+            UserIdEditor view = (UserIdEditor) mInflater.inflate(R.layout.edit_key_user_id_item,
+                    mEditors, false);
+            view.setEditorListener(this);
+            view.setValue(userId, mEditors.getChildCount() == 0, false);
+            view.setCanBeEdited(mCanBeEdited);
+            mEditors.addView(view);
+        }
+
+        this.updateEditorsVisible();
+    }
+
+    public void setKeys(Vector<PGPSecretKey> list, Vector<Integer> usages, boolean newKeys) {
+        if (mType != Id.type.key) {
+            return;
+        }
+
+        mEditors.removeAllViews();
+
+        // go through all keys and set view based on them
+        for (int i = 0; i < list.size(); i++) {
+            KeyEditor view = (KeyEditor) mInflater.inflate(R.layout.edit_key_key_item, mEditors,
+                    false);
+            view.setEditorListener(this);
+            boolean isMasterKey = (mEditors.getChildCount() == 0);
+            view.setValue(list.get(i), isMasterKey, usages.get(i), newKeys);
+            view.setCanBeEdited(mCanBeEdited);
+            mEditors.addView(view);
+        }
+
+        this.updateEditorsVisible();
+    }
+
+    private void createKey() {
+        // Send all information needed to service to edit key in other thread
+        final Intent intent = new Intent(mActivity, KeychainIntentService.class);
+
+        intent.setAction(KeychainIntentService.ACTION_GENERATE_KEY);
+
+        // fill values for this action
+        Bundle data = new Bundle();
+        Boolean isMasterKey;
+
+        String passphrase;
+        if (mEditors.getChildCount() > 0) {
+            PGPSecretKey masterKey = ((KeyEditor) mEditors.getChildAt(0)).getValue();
+            passphrase = PassphraseCacheService
+                    .getCachedPassphrase(mActivity, masterKey.getKeyID());
+            isMasterKey = false;
+        } else {
+            passphrase = "";
+            isMasterKey = true;
+        }
+        data.putBoolean(KeychainIntentService.GENERATE_KEY_MASTER_KEY, isMasterKey);
+        data.putString(KeychainIntentService.GENERATE_KEY_SYMMETRIC_PASSPHRASE, passphrase);
+        data.putInt(KeychainIntentService.GENERATE_KEY_ALGORITHM, mNewKeyAlgorithmChoice.getId());
+        data.putInt(KeychainIntentService.GENERATE_KEY_KEY_SIZE, mNewKeySize);
+
+        intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+        // show progress dialog
+        mGeneratingDialog = ProgressDialogFragment.newInstance(
+                getResources().getQuantityString(R.plurals.progress_generating, 1),
+                ProgressDialog.STYLE_SPINNER,
+                true,
+                new DialogInterface.OnCancelListener() {
+                    @Override
+                    public void onCancel(DialogInterface dialog) {
+                        mActivity.stopService(intent);
+                    }
+                });
+
+        // Message is received after generating is done in KeychainIntentService
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(mActivity,
+                mGeneratingDialog) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+                    // get new key from data bundle returned from service
+                    Bundle data = message.getData();
+                    PGPSecretKey newKey = (PGPSecretKey) PgpConversionHelper
+                            .BytesToPGPSecretKey(data
+                                    .getByteArray(KeychainIntentService.RESULT_NEW_KEY));
+                    addGeneratedKeyToView(newKey);
+                }
+            }
+        };
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(saveHandler);
+        intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+        mGeneratingDialog.show(mActivity.getSupportFragmentManager(), "dialog");
+
+        // start service with intent
+        mActivity.startService(intent);
+    }
+
+    private void addGeneratedKeyToView(PGPSecretKey newKey) {
+        // add view with new key
+        KeyEditor view = (KeyEditor) mInflater.inflate(R.layout.edit_key_key_item,
+                mEditors, false);
+        view.setEditorListener(SectionView.this);
+        int usage = 0;
+        if (mEditors.getChildCount() == 0) {
+            usage = PGPKeyFlags.CAN_CERTIFY;
+        }
+        view.setValue(newKey, newKey.isMasterKey(), usage, true);
+        mEditors.addView(view);
+        SectionView.this.updateEditorsVisible();
+        if (mEditorListener != null) {
+            mEditorListener.onEdited();
+        }
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/UnderlineTextView.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2013 Eric Frohnhoefer
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui.widget;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.util.AttributeSet;
+import android.util.TypedValue;
+import android.widget.TextView;
+
+/**
+ * Copied from StickyListHeaders lib example
+ *
+ * @author Eric Frohnhoefer
+ */
+public class UnderlineTextView extends TextView {
+    private final Paint mPaint = new Paint();
+    private int mUnderlineHeight = 0;
+
+    public UnderlineTextView(Context context) {
+        this(context, null);
+    }
+
+    public UnderlineTextView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public UnderlineTextView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+
+        init(context, attrs);
+    }
+
+    private void init(Context context, AttributeSet attrs) {
+        Resources r = getResources();
+        mUnderlineHeight = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 2,
+                r.getDisplayMetrics());
+    }
+
+    @Override
+    public void setPadding(int left, int top, int right, int bottom) {
+        super.setPadding(left, top, right, bottom + mUnderlineHeight);
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        super.onDraw(canvas);
+
+        // Draw the underline the same color as the text
+        mPaint.setColor(getTextColors().getDefaultColor());
+        canvas.drawRect(0, getHeight() - mUnderlineHeight, getWidth(), getHeight(), mPaint);
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/UserIdEditor.java

@@ -0,0 +1,265 @@
+/*
+ * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.ui.widget;
+
+import android.content.Context;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.util.AttributeSet;
+import android.util.Patterns;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.AutoCompleteTextView;
+import android.widget.EditText;
+import android.widget.LinearLayout;
+import android.widget.RadioButton;
+import com.beardedhen.androidbootstrap.BootstrapButton;
+
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.ContactHelper;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+
+import java.util.regex.Matcher;
+
+public class UserIdEditor extends LinearLayout implements Editor, OnClickListener {
+    private EditorListener mEditorListener = null;
+
+    private BootstrapButton mDeleteButton;
+    private RadioButton mIsMainUserId;
+    private String mOriginalID;
+    private EditText mName;
+    private String mOriginalName;
+    private AutoCompleteTextView mEmail;
+    private String mOriginalEmail;
+    private EditText mComment;
+    private String mOriginalComment;
+    private boolean mOriginallyMainUserID;
+    private boolean mIsNewId;
+
+    public void setCanBeEdited(boolean canBeEdited) {
+        if (!canBeEdited) {
+            mDeleteButton.setVisibility(View.INVISIBLE);
+            mName.setEnabled(false);
+            mIsMainUserId.setEnabled(false);
+            mEmail.setEnabled(false);
+            mComment.setEnabled(false);
+        }
+    }
+
+    public static class InvalidEmailException extends Exception {
+        static final long serialVersionUID = 0xf812773345L;
+
+        public InvalidEmailException(String message) {
+            super(message);
+        }
+    }
+
+    public UserIdEditor(Context context) {
+        super(context);
+    }
+
+    public UserIdEditor(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    TextWatcher mTextWatcher = new TextWatcher() {
+        @Override
+        public void onTextChanged(CharSequence s, int start, int before, int count) {
+        }
+
+        @Override
+        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+        }
+
+        @Override
+        public void afterTextChanged(Editable s) {
+            if (mEditorListener != null) {
+                mEditorListener.onEdited();
+            }
+        }
+    };
+
+    @Override
+    protected void onFinishInflate() {
+        setDrawingCacheEnabled(true);
+        setAlwaysDrawnWithCacheEnabled(true);
+
+        mDeleteButton = (BootstrapButton) findViewById(R.id.delete);
+        mDeleteButton.setOnClickListener(this);
+        mIsMainUserId = (RadioButton) findViewById(R.id.isMainUserId);
+        mIsMainUserId.setOnClickListener(this);
+
+        mName = (EditText) findViewById(R.id.name);
+        mName.addTextChangedListener(mTextWatcher);
+        mEmail = (AutoCompleteTextView) findViewById(R.id.email);
+        mComment = (EditText) findViewById(R.id.comment);
+        mComment.addTextChangedListener(mTextWatcher);
+
+
+        mEmail.setThreshold(1); // Start working from first character
+        mEmail.setAdapter(
+                new ArrayAdapter<String>
+                        (this.getContext(), android.R.layout.simple_dropdown_item_1line,
+                                ContactHelper.getMailAccounts(getContext())
+                        ));
+        mEmail.addTextChangedListener(new TextWatcher(){
+            @Override
+            public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) { }
+
+            @Override
+            public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) { }
+
+            @Override
+            public void afterTextChanged(Editable editable) {
+                String email = editable.toString();
+                if (email.length() > 0) {
+                    Matcher emailMatcher = Patterns.EMAIL_ADDRESS.matcher(email);
+                    if (emailMatcher.matches()) {
+                        mEmail.setCompoundDrawablesWithIntrinsicBounds(0, 0,
+                                    android.R.drawable.presence_online, 0);
+                    } else {
+                        mEmail.setCompoundDrawablesWithIntrinsicBounds(0, 0,
+                                    android.R.drawable.presence_offline, 0);
+                    }
+                } else {
+                    // remove drawable if email is empty
+                    mEmail.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
+                }
+                if (mEditorListener != null) {
+                    mEditorListener.onEdited();
+                }
+            }
+        });
+
+        super.onFinishInflate();
+    }
+
+    public void setValue(String userId, boolean isMainID, boolean isNewId) {
+
+        mName.setText("");
+        mOriginalName = "";
+        mComment.setText("");
+        mOriginalComment = "";
+        mEmail.setText("");
+        mOriginalEmail = "";
+        mIsNewId = isNewId;
+        mOriginalID = userId;
+
+        String[] result = PgpKeyHelper.splitUserId(userId);
+        if (result[0] != null) {
+            mName.setText(result[0]);
+            mOriginalName = result[0];
+        }
+        if (result[1] != null) {
+            mEmail.setText(result[1]);
+            mOriginalEmail = result[1];
+        }
+        if (result[2] != null) {
+            mComment.setText(result[2]);
+            mOriginalComment = result[2];
+        }
+
+        mOriginallyMainUserID = isMainID;
+        setIsMainUserId(isMainID);
+    }
+
+    public String getValue() {
+        String name = ("" + mName.getText()).trim();
+        String email = ("" + mEmail.getText()).trim();
+        String comment = ("" + mComment.getText()).trim();
+
+        String userId = name;
+        if (comment.length() > 0) {
+            userId += " (" + comment + ")";
+        }
+        if (email.length() > 0) {
+            userId += " <" + email + ">";
+        }
+
+        if (userId.equals("")) {
+            // ok, empty one...
+            return userId;
+        }
+        //TODO: check gpg accepts an entirely empty ID packet. specs say this is allowed
+        return userId;
+    }
+
+    public void onClick(View v) {
+        final ViewGroup parent = (ViewGroup) getParent();
+        if (v == mDeleteButton) {
+            boolean wasMainUserId = mIsMainUserId.isChecked();
+            parent.removeView(this);
+            if (mEditorListener != null) {
+                mEditorListener.onDeleted(this, mIsNewId);
+            }
+            if (wasMainUserId && parent.getChildCount() > 0) {
+                UserIdEditor editor = (UserIdEditor) parent.getChildAt(0);
+                editor.setIsMainUserId(true);
+            }
+        } else if (v == mIsMainUserId) {
+            for (int i = 0; i < parent.getChildCount(); ++i) {
+                UserIdEditor editor = (UserIdEditor) parent.getChildAt(i);
+                if (editor == this) {
+                    editor.setIsMainUserId(true);
+                } else {
+                    editor.setIsMainUserId(false);
+                }
+            }
+            if (mEditorListener != null) {
+                mEditorListener.onEdited();
+            }
+        }
+    }
+
+    public void setIsMainUserId(boolean value) {
+        mIsMainUserId.setChecked(value);
+    }
+
+    public boolean isMainUserId() {
+        return mIsMainUserId.isChecked();
+    }
+
+    public void setEditorListener(EditorListener listener) {
+        mEditorListener = listener;
+    }
+
+    @Override
+    public boolean needsSaving() {
+        boolean retval = false; //(mOriginallyMainUserID != isMainUserId());
+        retval |= !(mOriginalName.equals(("" + mName.getText()).trim()));
+        retval |= !(mOriginalEmail.equals(("" + mEmail.getText()).trim()));
+        retval |= !(mOriginalComment.equals(("" + mComment.getText()).trim()));
+        retval |= mIsNewId;
+        return retval;
+    }
+
+    public  boolean getIsOriginallyMainUserID() {
+        return mOriginallyMainUserID;
+    }
+
+    public boolean primarySwapped() {
+        return (mOriginallyMainUserID != isMainUserId());
+    }
+
+    public String getOriginalID() {
+        return mOriginalID;
+    }
+
+    public boolean getIsNewID() { return mIsNewId; }
+}