Share with NFC, Qr Code sharing refactored, Receiving NFC is not ready yet
This commit is contained in:
Dominik Schürmann
237
APG/src/org/thialfihar/android/apg/ui/ShareNfcBeamActivity.java
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237
APG/src/org/thialfihar/android/apg/ui/ShareNfcBeamActivity.java
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/*
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* Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.thialfihar.android.apg.ui;
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import java.io.IOException;
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import java.io.InputStream;
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import net.nightwhistler.htmlspanner.HtmlSpanner;
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import net.nightwhistler.htmlspanner.JellyBeanSpanFixTextView;
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import org.thialfihar.android.apg.Constants;
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import org.thialfihar.android.apg.R;
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import org.thialfihar.android.apg.helper.OtherHelper;
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import org.thialfihar.android.apg.provider.ProviderHelper;
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import com.actionbarsherlock.app.SherlockFragmentActivity;
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import com.actionbarsherlock.view.Menu;
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import com.actionbarsherlock.view.MenuInflater;
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import com.actionbarsherlock.view.MenuItem;
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import android.annotation.TargetApi;
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import android.content.Intent;
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import android.nfc.NdefMessage;
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import android.nfc.NdefRecord;
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import android.nfc.NfcAdapter;
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import android.nfc.NfcAdapter.CreateNdefMessageCallback;
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import android.nfc.NfcEvent;
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import android.os.Build;
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import android.os.Bundle;
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import android.os.Parcelable;
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import android.util.Log;
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import android.widget.Toast;
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import android.nfc.NfcAdapter.OnNdefPushCompleteCallback;
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import android.os.Handler;
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import android.os.Message;
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import android.provider.Settings;
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import android.text.method.LinkMovementMethod;
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@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
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public class ShareNfcBeamActivity extends SherlockFragmentActivity implements
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CreateNdefMessageCallback, OnNdefPushCompleteCallback {
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public static final String ACTION_SHARE_WITH_NFC = Constants.INTENT_PREFIX + "SHARE_WITH_NFC";
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public static final String EXTRA_MASTER_KEY_ID = "masterKeyId";
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NfcAdapter mNfcAdapter;
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byte[] mSharedKeyringBytes;
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private static final int MESSAGE_SENT = 1;
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
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Toast.makeText(this,
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getString(R.string.error) + ": " + getString(R.string.error_jellyBeanNeeded),
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Toast.LENGTH_LONG).show();
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finish();
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} else {
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// Check for available NFC Adapter
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mNfcAdapter = NfcAdapter.getDefaultAdapter(this);
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if (mNfcAdapter == null) {
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Toast.makeText(this,
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getString(R.string.error) + ": " + getString(R.string.error_nfcNeeded),
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Toast.LENGTH_LONG).show();
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finish();
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} else {
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buildView();
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// handle actions after verifying that nfc works...
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handleActions(getIntent());
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}
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}
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}
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protected void handleActions(Intent intent) {
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String action = intent.getAction();
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Bundle extras = intent.getExtras();
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if (extras == null) {
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extras = new Bundle();
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}
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if (ACTION_SHARE_WITH_NFC.equals(action)) {
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long masterKeyId = getIntent().getExtras().getLong(EXTRA_MASTER_KEY_ID);
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// get public keyring as byte array
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mSharedKeyringBytes = ProviderHelper.getPublicKeyRingsAsByteArray(this,
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new long[] { masterKeyId });
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// Register callback to set NDEF message
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mNfcAdapter.setNdefPushMessageCallback(this, this);
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// Register callback to listen for message-sent success
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mNfcAdapter.setOnNdefPushCompleteCallback(this, this);
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}
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}
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/**
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* Parses the NDEF Message from the intent and prints to the TextView
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*/
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void handleActionNdefDiscovered(Intent intent) {
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Parcelable[] rawMsgs = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);
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// only one message sent during the beam
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NdefMessage msg = (NdefMessage) rawMsgs[0];
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// record 0 contains the MIME type, record 1 is the AAR, if present
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byte[] receivedKeyringBytes = msg.getRecords()[0].getPayload();
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// Log.d(Constants.TAG, new String());
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}
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private void buildView() {
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// load html from html file from /res/raw
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InputStream inputStreamText = getResources().openRawResource(R.raw.nfc_beam_share);
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setContentView(R.layout.share_nfc_beam);
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JellyBeanSpanFixTextView text = (JellyBeanSpanFixTextView) findViewById(R.id.nfc_beam_text);
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// load html into textview
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HtmlSpanner htmlSpanner = new HtmlSpanner();
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htmlSpanner.setStripExtraWhiteSpace(true);
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try {
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text.setText(htmlSpanner.fromHtml(inputStreamText));
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} catch (IOException e) {
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Log.e(Constants.TAG, "Error while reading raw resources as stream", e);
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}
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// make links work
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text.setMovementMethod(LinkMovementMethod.getInstance());
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// no flickering when clicking textview for Android < 4
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text.setTextColor(getResources().getColor(android.R.color.black));
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// set actionbar without home button if called from another app
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OtherHelper.setActionBarBackButton(this);
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}
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/**
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* Implementation for the CreateNdefMessageCallback interface
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*/
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@Override
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public NdefMessage createNdefMessage(NfcEvent event) {
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/**
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* When a device receives a push with an AAR in it, the application specified in the AAR is
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* guaranteed to run. The AAR overrides the tag dispatch system. You can add it back in to
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* guarantee that this activity starts when receiving a beamed message. For now, this code
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* uses the tag dispatch system.
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*/
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NdefMessage msg = new NdefMessage(NdefRecord.createMime(Constants.NFC_MIME,
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mSharedKeyringBytes), NdefRecord.createApplicationRecord(Constants.PACKAGE_NAME));
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return msg;
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}
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/**
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* Implementation for the OnNdefPushCompleteCallback interface
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*/
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@Override
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public void onNdefPushComplete(NfcEvent arg0) {
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// A handler is needed to send messages to the activity when this
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// callback occurs, because it happens from a binder thread
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mHandler.obtainMessage(MESSAGE_SENT).sendToTarget();
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}
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/** This handler receives a message from onNdefPushComplete */
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private final Handler mHandler = new Handler() {
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@Override
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public void handleMessage(Message msg) {
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switch (msg.what) {
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case MESSAGE_SENT:
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Toast.makeText(getApplicationContext(), "Message sent!", Toast.LENGTH_LONG).show();
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break;
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}
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}
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};
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@Override
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public void onResume() {
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super.onResume();
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// Check to see that the Activity started due to an Android Beam
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if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(getIntent().getAction())) {
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handleActionNdefDiscovered(getIntent());
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}
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}
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@Override
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public void onNewIntent(Intent intent) {
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// onResume gets called after this to handle the intent
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setIntent(intent);
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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MenuInflater inflater = getSupportMenuInflater();
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inflater.inflate(R.menu.nfc_beam, menu);
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return true;
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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switch (item.getItemId()) {
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case android.R.id.home:
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// app icon in Action Bar clicked; go to KeyListPublicActivity
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Intent intent = new Intent(this, KeyListPublicActivity.class);
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intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
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startActivity(intent);
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return true;
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case R.id.menu_settings:
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Intent intentSettings = new Intent(Settings.ACTION_NFCSHARING_SETTINGS);
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startActivity(intentSettings);
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return true;
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default:
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return super.onOptionsItemSelected(item);
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}
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}
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}
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