Fix a bunch of trivial code warnings

OpenKeychain/build.gradle

@@ -261,7 +261,7 @@ android {
 
     variantFilter { variant ->
         if(variant.buildType.name.equals('debug') && variant.getFlavors().get(0).name.equals('google')) {
-            variant.setIgnore(true);
+            variant.setIgnore(true)
         }
     }
 

OpenKeychain/src/main/java/android/support/v4/widget/FlingNestedScrollView.java

@@ -94,7 +94,7 @@ public class FlingNestedScrollView extends FrameLayout implements NestedScrollin
     private float mVerticalScrollFactor;
 
     public FlingNestedScrollView(Context context) {
-        this(context, (AttributeSet)null);
+        this(context, null);
     }
 
     public FlingNestedScrollView(Context context, AttributeSet attrs) {
@@ -176,7 +176,7 @@ public class FlingNestedScrollView extends FrameLayout implements NestedScrollin
         this.scrollBy(0, dyUnconsumed);
         int myConsumed = this.getScrollY() - oldScrollY;
         int myUnconsumed = dyUnconsumed - myConsumed;
-        this.dispatchNestedScroll(0, myConsumed, 0, myUnconsumed, (int[])null);
+        this.dispatchNestedScroll(0, myConsumed, 0, myUnconsumed, null);
     }
 
     public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) {
@@ -1061,8 +1061,9 @@ public class FlingNestedScrollView extends FrameLayout implements NestedScrollin
             direction = 33;
         }
 
-        View nextFocus = previouslyFocusedRect == null?FocusFinder.getInstance().findNextFocus(this, (View)null, direction):FocusFinder.getInstance().findNextFocusFromRect(this, previouslyFocusedRect, direction);
+        View nextFocus = previouslyFocusedRect == null?FocusFinder.getInstance().findNextFocus(this, null, direction):FocusFinder.getInstance().findNextFocusFromRect(this, previouslyFocusedRect, direction);
-        return nextFocus == null?false:(this.isOffScreen(nextFocus)?false:nextFocus.requestFocus(direction, previouslyFocusedRect));
+        return nextFocus != null && (!this.isOffScreen(nextFocus) &&
+                nextFocus.requestFocus(direction, previouslyFocusedRect));
     }
 
     public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) {

OpenKeychain/src/main/java/android/support/v4/widget/NoScrollableSwipeRefreshLayout.java

@@ -450,7 +450,7 @@ public class NoScrollableSwipeRefreshLayout extends ViewGroup {
      * triggers a refresh should implement this interface.
      */
     public interface OnRefreshListener {
-        public void onRefresh();
+        void onRefresh();
     }
 
     /**

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/results/OperationResult.java

@@ -926,7 +926,6 @@ public abstract class OperationResult implements Parcelable {
         MSG_TRUST_INITIALIZE (LogLevel.INFO, R.string.msg_trust_initialize),
         MSG_TRUST_COUNT_NONE (LogLevel.DEBUG, R.string.msg_trust_count_none),
         MSG_TRUST_COUNT (LogLevel.DEBUG, R.plurals.msg_trust_count);
-        ;
 
         public final int mMsgId;
         public final LogLevel mLevel;

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PassphraseCacheInterface.java

@@ -20,13 +20,13 @@ package org.sufficientlysecure.keychain.pgp;
 import org.sufficientlysecure.keychain.util.Passphrase;
 
 public interface PassphraseCacheInterface {
-    public static class NoSecretKeyException extends Exception {
+    class NoSecretKeyException extends Exception {
         public NoSecretKeyException() {
         }
     }
 
-    public Passphrase getCachedPassphrase(long subKeyId) throws NoSecretKeyException;
+    Passphrase getCachedPassphrase(long subKeyId) throws NoSecretKeyException;
 
-    public Passphrase getCachedPassphrase(long masterKeyId, long subKeyId) throws NoSecretKeyException;
+    Passphrase getCachedPassphrase(long masterKeyId, long subKeyId) throws NoSecretKeyException;
 
 }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerifyOperation.java

@@ -579,7 +579,6 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp
         CanonicalizedSecretKey decryptionKey = null;
         CachingDataDecryptorFactory cachedKeyDecryptorFactory = new CachingDataDecryptorFactory(
                 Constants.BOUNCY_CASTLE_PROVIDER_NAME, cryptoInput.getCryptoData());
-        ;
 
         Passphrase passphrase = null;
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/UncachedKeyRing.java

@@ -255,8 +255,8 @@ public class UncachedKeyRing {
     }
 
     public interface IteratorWithIOThrow<E> {
-        public boolean hasNext() throws IOException;
+        boolean hasNext() throws IOException;
-        public E next() throws IOException;
+        E next() throws IOException;
     }
     public void encodeArmored(OutputStream out, String version) throws IOException {
         ArmoredOutputStream aos = new ArmoredOutputStream(out);

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/AppSettingsActivity.java

@@ -61,8 +61,8 @@ public class AppSettingsActivity extends BaseActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        mAppNameView = (TextView) findViewById(R.id.api_app_settings_app_name);
+        mAppNameView = findViewById(R.id.api_app_settings_app_name);
-        mAppIconView = (ImageView) findViewById(R.id.api_app_settings_app_icon);
+        mAppIconView = findViewById(R.id.api_app_settings_app_icon);
 
         findViewById(R.id.fab).setOnClickListener(new View.OnClickListener() {
             @Override

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/AppSettingsAllowedKeysListFragment.java

@@ -76,7 +76,7 @@ public class AppSettingsAllowedKeysListFragment extends ListFragmentWorkaround i
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
         View layout = super.onCreateView(inflater, container, savedInstanceState);
-        ListView lv = (ListView) layout.findViewById(android.R.id.list);
+        ListView lv = layout.findViewById(android.R.id.list);
         ViewGroup parent = (ViewGroup) lv.getParent();
 
         /*

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/AppSettingsHeaderFragment.java

@@ -63,10 +63,10 @@ public class AppSettingsHeaderFragment extends Fragment {
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.api_app_settings_fragment, container, false);
-        mAppNameView = (TextView) view.findViewById(R.id.api_app_settings_app_name);
+        mAppNameView = view.findViewById(R.id.api_app_settings_app_name);
-        mAppIconView = (ImageView) view.findViewById(R.id.api_app_settings_app_icon);
+        mAppIconView = view.findViewById(R.id.api_app_settings_app_icon);
-        mPackageName = (TextView) view.findViewById(R.id.api_app_settings_package_name);
+        mPackageName = view.findViewById(R.id.api_app_settings_package_name);
-        mPackageCertificate = (TextView) view.findViewById(R.id.api_app_settings_package_certificate);
+        mPackageCertificate = view.findViewById(R.id.api_app_settings_package_certificate);
         return view;
     }
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/AppsListFragment.java

@@ -321,9 +321,9 @@ public class AppsListFragment extends ListFragment implements
 
         @Override
         public void bindView(View view, Context context, Cursor cursor) {
-            TextView text = (TextView) view.findViewById(R.id.api_apps_adapter_item_name);
+            TextView text = view.findViewById(R.id.api_apps_adapter_item_name);
-            ImageView icon = (ImageView) view.findViewById(R.id.api_apps_adapter_item_icon);
+            ImageView icon = view.findViewById(R.id.api_apps_adapter_item_icon);
-            ImageView installIcon = (ImageView) view.findViewById(R.id.api_apps_adapter_install_icon);
+            ImageView installIcon = view.findViewById(R.id.api_apps_adapter_install_icon);
 
             String packageName = cursor.getString(INDEX_PACKAGE_NAME);
             Timber.d("packageName: " + packageName);

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/RemoteErrorActivity.java

@@ -63,7 +63,7 @@ public class RemoteErrorActivity extends BaseActivity {
         );
 
         // set text on view
-        TextView textView = (TextView) findViewById(R.id.api_app_error_message_text);
+        TextView textView = findViewById(R.id.api_app_error_message_text);
         textView.setText(redErrorMessage);
     }
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/RemoteRegisterActivity.java

@@ -94,8 +94,8 @@ public class RemoteRegisterActivity extends FragmentActivity {
             View view = LayoutInflater.from(theme).inflate(R.layout.api_remote_register_app, null, false);
             alert.setView(view);
 
-            buttonAllow = (Button) view.findViewById(R.id.button_allow);
+            buttonAllow = view.findViewById(R.id.button_allow);
-            buttonCancel = (Button) view.findViewById(R.id.button_cancel);
+            buttonCancel = view.findViewById(R.id.button_cancel);
 
             setupListenersForPresenter();
             mvpView = createMvpView(view);
@@ -132,8 +132,8 @@ public class RemoteRegisterActivity extends FragmentActivity {
 
         @NonNull
         private RemoteRegisterView createMvpView(View view) {
-            final TextView titleText = (TextView) view.findViewById(R.id.api_register_text);
+            final TextView titleText = view.findViewById(R.id.api_register_text);
-            final ImageView iconClientApp = (ImageView) view.findViewById(R.id.icon_client_app);
+            final ImageView iconClientApp = view.findViewById(R.id.icon_client_app);
 
             return new RemoteRegisterView() {
                 @Override

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/RemoteSecurityProblemDialogActivity.java

@@ -110,12 +110,12 @@ public class RemoteSecurityProblemDialogActivity extends FragmentActivity {
             View view = LayoutInflater.from(theme).inflate(R.layout.remote_security_issue_dialog, null, false);
             alert.setView(view);
 
-            buttonGotIt = (Button) view.findViewById(R.id.button_allow);
+            buttonGotIt = view.findViewById(R.id.button_allow);
-            buttonViewKey = (Button) view.findViewById(R.id.button_view_key);
+            buttonViewKey = view.findViewById(R.id.button_view_key);
-            buttonOverride = (Button) view.findViewById(R.id.button_override);
+            buttonOverride = view.findViewById(R.id.button_override);
-            buttonOverrideUndo = (Button) view.findViewById(R.id.button_override_undo);
+            buttonOverrideUndo = view.findViewById(R.id.button_override_undo);
-            buttonOverrideBack = (Button) view.findViewById(R.id.button_override_back);
+            buttonOverrideBack = view.findViewById(R.id.button_override_back);
-            buttonOverrideConfirm = (Button) view.findViewById(R.id.button_override_confirm);
+            buttonOverrideConfirm = view.findViewById(R.id.button_override_confirm);
 
             setupListenersForPresenter();
             mvpView = createMvpView(view);
@@ -152,17 +152,17 @@ public class RemoteSecurityProblemDialogActivity extends FragmentActivity {
 
         @NonNull
         private RemoteSecurityProblemView createMvpView(View view) {
-            final LinearLayout insecureWarningLayout = (LinearLayout) view.findViewById(R.id.insecure_warning_layout);
+            final LinearLayout insecureWarningLayout = view.findViewById(R.id.insecure_warning_layout);
-            final ImageView iconClientApp = (ImageView) view.findViewById(R.id.icon_client_app);
+            final ImageView iconClientApp = view.findViewById(R.id.icon_client_app);
-            final TextView explanationText = (TextView) insecureWarningLayout.findViewById(R.id.dialog_insecure_text);
+            final TextView explanationText = insecureWarningLayout.findViewById(R.id.dialog_insecure_text);
             final TextView recommendText =
-                    (TextView) insecureWarningLayout.findViewById(R.id.dialog_insecure_recommend_text);
+                    insecureWarningLayout.findViewById(R.id.dialog_insecure_recommend_text);
             final TextView overrideText =
-                    (TextView) insecureWarningLayout.findViewById(R.id.dialog_insecure_override_text);
+                    insecureWarningLayout.findViewById(R.id.dialog_insecure_override_text);
             final ToolableViewAnimator secondaryLayoutAnimator =
-                    (ToolableViewAnimator) insecureWarningLayout.findViewById(R.id.dialog_insecure_secondary_layout);
+                    insecureWarningLayout.findViewById(R.id.dialog_insecure_secondary_layout);
             final ToolableViewAnimator buttonBarAnimator =
-                    (ToolableViewAnimator) view.findViewById(R.id.dialog_insecure_button_bar);
+                    view.findViewById(R.id.dialog_insecure_button_bar);
 
             return new RemoteSecurityProblemView() {
                 private boolean layoutInitialized = false;

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/RemoteSelectPubKeyActivity.java

@@ -120,7 +120,7 @@ public class RemoteSelectPubKeyActivity extends BaseActivity {
                 });
 
         // set text on view
-        TextView textView = (TextView) findViewById(R.id.api_select_pub_keys_text);
+        TextView textView = findViewById(R.id.api_select_pub_keys_text);
         textView.setText(ssb, TextView.BufferType.SPANNABLE);
 
         // Load select pub keys fragment

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/RequestKeyPermissionActivity.java

@@ -92,8 +92,8 @@ public class RequestKeyPermissionActivity extends FragmentActivity {
             View view = LayoutInflater.from(theme).inflate(R.layout.api_remote_request_key_permission, null, false);
             alert.setView(view);
 
-            buttonAllow = (Button) view.findViewById(R.id.button_allow);
+            buttonAllow = view.findViewById(R.id.button_allow);
-            buttonCancel = (Button) view.findViewById(R.id.button_cancel);
+            buttonCancel = view.findViewById(R.id.button_cancel);
 
             setupListenersForPresenter();
             mvpView = createMvpView(view);
@@ -130,9 +130,9 @@ public class RequestKeyPermissionActivity extends FragmentActivity {
 
         @NonNull
         private RequestKeyPermissionMvpView createMvpView(View view) {
-            final TextView titleText = (TextView) view.findViewById(R.id.select_identity_key_title);
+            final TextView titleText = view.findViewById(R.id.select_identity_key_title);
-            final TextView keyUserIdView = (TextView) view.findViewById(R.id.select_key_item_name);
+            final TextView keyUserIdView = view.findViewById(R.id.select_key_item_name);
-            final ImageView iconClientApp = (ImageView) view.findViewById(R.id.icon_client_app);
+            final ImageView iconClientApp = view.findViewById(R.id.icon_client_app);
             final View keyUnavailableWarning = view.findViewById(R.id.requested_key_unavailable_warning);
             final View keyInfoLayout = view.findViewById(R.id.key_info_layout);
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/SelectSignKeyIdActivity.java

@@ -56,7 +56,7 @@ public class SelectSignKeyIdActivity extends BaseActivity {
                     }
                 });
 
-        TextView noneButton = (TextView) findViewById(R.id.api_select_sign_key_none);
+        TextView noneButton = findViewById(R.id.api_select_sign_key_none);
         noneButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/adapter/SelectEncryptKeyAdapter.java

@@ -139,11 +139,11 @@ public class SelectEncryptKeyAdapter extends KeyCursorAdapter<SelectEncryptKeyAd
             super(itemView);
             itemView.setOnClickListener(this);
 
-            mUserIdText = (TextView) itemView.findViewById(R.id.select_key_item_name);
+            mUserIdText = itemView.findViewById(R.id.select_key_item_name);
-            mUserIdRestText = (TextView) itemView.findViewById(R.id.select_key_item_email);
+            mUserIdRestText = itemView.findViewById(R.id.select_key_item_email);
-            mCreationText = (TextView) itemView.findViewById(R.id.select_key_item_creation);
+            mCreationText = itemView.findViewById(R.id.select_key_item_creation);
-            mStatusIcon = (ImageView) itemView.findViewById(R.id.select_key_item_status_icon);
+            mStatusIcon = itemView.findViewById(R.id.select_key_item_status_icon);
-            mChecked = (CheckBox) itemView.findViewById(R.id.selected);
+            mChecked = itemView.findViewById(R.id.selected);
         }
 
         public void bind(PublicKeyCursor cursor, String query, boolean selected) {

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/adapter/SelectSignKeyAdapter.java

@@ -129,10 +129,10 @@ public class SelectSignKeyAdapter extends KeyCursorAdapter<CursorAdapter.KeyCurs
             itemView.setClickable(true);
             itemView.setOnClickListener(this);
 
-            mUserIdText = (TextView) itemView.findViewById(R.id.select_key_item_name);
+            mUserIdText = itemView.findViewById(R.id.select_key_item_name);
-            mUserIdRestText = (TextView) itemView.findViewById(R.id.select_key_item_email);
+            mUserIdRestText = itemView.findViewById(R.id.select_key_item_email);
-            mCreationText = (TextView) itemView.findViewById(R.id.select_key_item_creation);
+            mCreationText = itemView.findViewById(R.id.select_key_item_creation);
-            mStatusIcon = (ImageView) itemView.findViewById(R.id.select_key_item_status_icon);
+            mStatusIcon = itemView.findViewById(R.id.select_key_item_status_icon);
         }
 
         public void bind(KeyCursor cursor, String query) {

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/dialog/RemoteDeduplicateActivity.java

@@ -117,10 +117,10 @@ public class RemoteDeduplicateActivity extends FragmentActivity {
             View view = layoutInflater.inflate(R.layout.api_remote_deduplicate, null, false);
             alert.setView(view);
 
-            buttonSelect = (Button) view.findViewById(R.id.button_select);
+            buttonSelect = view.findViewById(R.id.button_select);
-            buttonCancel = (Button) view.findViewById(R.id.button_cancel);
+            buttonCancel = view.findViewById(R.id.button_cancel);
 
-            keyChoiceList = (RecyclerView) view.findViewById(R.id.duplicate_key_list);
+            keyChoiceList = view.findViewById(R.id.duplicate_key_list);
             keyChoiceList.setLayoutManager(new LinearLayoutManager(activity));
             keyChoiceList.addItemDecoration(
                     new DividerItemDecoration(activity, DividerItemDecoration.VERTICAL_LIST, true));
@@ -160,9 +160,9 @@ public class RemoteDeduplicateActivity extends FragmentActivity {
 
         @NonNull
         private RemoteDeduplicateView createMvpView(View view, LayoutInflater layoutInflater) {
-            final ImageView iconClientApp = (ImageView) view.findViewById(R.id.icon_client_app);
+            final ImageView iconClientApp = view.findViewById(R.id.icon_client_app);
             final KeyChoiceAdapter keyChoiceAdapter = new KeyChoiceAdapter(layoutInflater, getResources());
-            final TextView addressText = (TextView) view.findViewById(R.id.select_key_item_name);
+            final TextView addressText = view.findViewById(R.id.select_key_item_name);
             keyChoiceList.setAdapter(keyChoiceAdapter);
 
             return new RemoteDeduplicateView() {
@@ -314,9 +314,9 @@ public class RemoteDeduplicateActivity extends FragmentActivity {
         KeyChoiceViewHolder(View itemView) {
             super(itemView);
 
-            vName = (TextView) itemView.findViewById(R.id.key_list_item_name);
+            vName = itemView.findViewById(R.id.key_list_item_name);
-            vCreation = (TextView) itemView.findViewById(R.id.key_list_item_creation);
+            vCreation = itemView.findViewById(R.id.key_list_item_creation);
-            vIcon = (ImageView) itemView.findViewById(R.id.key_list_item_icon);
+            vIcon = itemView.findViewById(R.id.key_list_item_icon);
         }
 
         void bind(KeyInfo keyInfo, Drawable selectionIcon) {

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/ui/dialog/RemoteSelectAuthenticationKeyActivity.java

@@ -140,10 +140,10 @@ public class RemoteSelectAuthenticationKeyActivity extends FragmentActivity {
             View view = layoutInflater.inflate(R.layout.api_remote_select_authentication_key, null, false);
             alert.setView(view);
 
-            buttonSelect = (Button) view.findViewById(R.id.button_select);
+            buttonSelect = view.findViewById(R.id.button_select);
-            buttonCancel = (Button) view.findViewById(R.id.button_cancel);
+            buttonCancel = view.findViewById(R.id.button_cancel);
 
-            keyChoiceList = (RecyclerView) view.findViewById(R.id.authentication_key_list);
+            keyChoiceList = view.findViewById(R.id.authentication_key_list);
             keyChoiceList.setLayoutManager(new LinearLayoutManager(activity));
             keyChoiceList.addItemDecoration(
                     new DividerItemDecoration(activity, DividerItemDecoration.VERTICAL_LIST, true));
@@ -183,7 +183,7 @@ public class RemoteSelectAuthenticationKeyActivity extends FragmentActivity {
 
         @NonNull
         private RemoteSelectAuthenticationKeyView createMvpView(View view, LayoutInflater layoutInflater) {
-            final ImageView iconClientApp = (ImageView) view.findViewById(R.id.icon_client_app);
+            final ImageView iconClientApp = view.findViewById(R.id.icon_client_app);
             final KeyChoiceAdapter keyChoiceAdapter = new KeyChoiceAdapter(layoutInflater, getResources());
             keyChoiceList.setAdapter(keyChoiceAdapter);
 
@@ -328,9 +328,9 @@ public class RemoteSelectAuthenticationKeyActivity extends FragmentActivity {
         KeyChoiceViewHolder(View itemView) {
             super(itemView);
 
-            vName = (TextView) itemView.findViewById(R.id.key_list_item_name);
+            vName = itemView.findViewById(R.id.key_list_item_name);
-            vCreation = (TextView) itemView.findViewById(R.id.key_list_item_creation);
+            vCreation = itemView.findViewById(R.id.key_list_item_creation);
-            vIcon = (ImageView) itemView.findViewById(R.id.key_list_item_icon);
+            vIcon = itemView.findViewById(R.id.key_list_item_icon);
         }
 
         void bind(KeyInfo keyInfo, Drawable selectionIcon) {

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/KeychainService.java

@@ -99,7 +99,7 @@ public class KeychainService extends Service implements Progressable {
                 Bundle extras = intent.getExtras();
 
                 // Set messenger for communication (for this particular thread)
-                mMessenger.set(extras.<Messenger>getParcelable(EXTRA_MESSENGER));
+                mMessenger.set(extras.getParcelable(EXTRA_MESSENGER));
 
                 // Input
                 Parcelable inputParcel = extras.getParcelable(EXTRA_OPERATION_INPUT);

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/input/CryptoInputParcel.java

@@ -65,7 +65,7 @@ public abstract class CryptoInputParcel implements Parcelable {
 
 
     public static CryptoInputParcel createCryptoInputParcel() {
-        return new AutoValue_CryptoInputParcel(null, null, null, true, null, Collections.<ByteBuffer,byte[]>emptyMap());
+        return new AutoValue_CryptoInputParcel(null, null, null, true, null, Collections.emptyMap());
     }
 
     public static CryptoInputParcel createCryptoInputParcel(Date signatureTime, Passphrase passphrase) {
@@ -73,11 +73,11 @@ public abstract class CryptoInputParcel implements Parcelable {
             signatureTime = new Date();
         }
         return new AutoValue_CryptoInputParcel(signatureTime, passphrase, null, true, null,
-                Collections.<ByteBuffer,byte[]>emptyMap());
+                Collections.emptyMap());
     }
 
     public static CryptoInputParcel createCryptoInputParcel(Passphrase passphrase) {
-        return new AutoValue_CryptoInputParcel(null, passphrase, null, true, null, Collections.<ByteBuffer,byte[]>emptyMap());
+        return new AutoValue_CryptoInputParcel(null, passphrase, null, true, null, Collections.emptyMap());
     }
 
     public static CryptoInputParcel createCryptoInputParcel(Date signatureTime) {
@@ -85,7 +85,7 @@ public abstract class CryptoInputParcel implements Parcelable {
             signatureTime = new Date();
         }
         return new AutoValue_CryptoInputParcel(signatureTime, null, null, true, null,
-                Collections.<ByteBuffer,byte[]>emptyMap());
+                Collections.emptyMap());
     }
 
     public static CryptoInputParcel createCryptoInputParcel(ParcelableProxy parcelableProxy) {

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

@@ -261,21 +261,21 @@ public class BackupCodeFragment extends CryptoOperationFragment<BackupKeyringPar
         mExecuteBackupOperation = args.getBoolean(ARG_EXECUTE_BACKUP_OPERATION, true);
 
         mCodeEditText = new EditText[6];
-        mCodeEditText[0] = (EditText) view.findViewById(R.id.backup_code_1);
+        mCodeEditText[0] = view.findViewById(R.id.backup_code_1);
-        mCodeEditText[1] = (EditText) view.findViewById(R.id.backup_code_2);
+        mCodeEditText[1] = view.findViewById(R.id.backup_code_2);
-        mCodeEditText[2] = (EditText) view.findViewById(R.id.backup_code_3);
+        mCodeEditText[2] = view.findViewById(R.id.backup_code_3);
-        mCodeEditText[3] = (EditText) view.findViewById(R.id.backup_code_4);
+        mCodeEditText[3] = view.findViewById(R.id.backup_code_4);
-        mCodeEditText[4] = (EditText) view.findViewById(R.id.backup_code_5);
+        mCodeEditText[4] = view.findViewById(R.id.backup_code_5);
-        mCodeEditText[5] = (EditText) view.findViewById(R.id.backup_code_6);
+        mCodeEditText[5] = view.findViewById(R.id.backup_code_6);
 
         {
             TextView[] codeDisplayText = new TextView[6];
-            codeDisplayText[0] = (TextView) view.findViewById(R.id.backup_code_display_1);
+            codeDisplayText[0] = view.findViewById(R.id.backup_code_display_1);
-            codeDisplayText[1] = (TextView) view.findViewById(R.id.backup_code_display_2);
+            codeDisplayText[1] = view.findViewById(R.id.backup_code_display_2);
-            codeDisplayText[2] = (TextView) view.findViewById(R.id.backup_code_display_3);
+            codeDisplayText[2] = view.findViewById(R.id.backup_code_display_3);
-            codeDisplayText[3] = (TextView) view.findViewById(R.id.backup_code_display_4);
+            codeDisplayText[3] = view.findViewById(R.id.backup_code_display_4);
-            codeDisplayText[4] = (TextView) view.findViewById(R.id.backup_code_display_5);
+            codeDisplayText[4] = view.findViewById(R.id.backup_code_display_5);
-            codeDisplayText[5] = (TextView) view.findViewById(R.id.backup_code_display_6);
+            codeDisplayText[5] = view.findViewById(R.id.backup_code_display_6);
 
             // set backup code in code TextViews
             char[] backupCode = mBackupCode.toCharArray();
@@ -293,9 +293,9 @@ public class BackupCodeFragment extends CryptoOperationFragment<BackupKeyringPar
         setupEditTextFocusNext(mCodeEditText);
         setupEditTextSuccessListener(mCodeEditText);
 
-        mStatusAnimator = (ToolableViewAnimator) view.findViewById(R.id.button_bar_animator);
+        mStatusAnimator = view.findViewById(R.id.button_bar_animator);
-        mTitleAnimator = (ToolableViewAnimator) view.findViewById(R.id.title_animator);
+        mTitleAnimator = view.findViewById(R.id.title_animator);
-        mCodeFieldsAnimator = (ToolableViewAnimator) view.findViewById(R.id.code_animator);
+        mCodeFieldsAnimator = view.findViewById(R.id.code_animator);
 
         View backupInput = view.findViewById(R.id.button_backup_input);
         backupInput.setOnClickListener(new OnClickListener() {

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

@@ -73,12 +73,12 @@ public class CertifyFingerprintFragment extends LoaderFragment implements
         View root = super.onCreateView(inflater, superContainer, savedInstanceState);
         View view = inflater.inflate(R.layout.certify_fingerprint_fragment, getContainer());
 
-        TextView actionNo = (TextView) view.findViewById(R.id.certify_fingerprint_button_no);
+        TextView actionNo = view.findViewById(R.id.certify_fingerprint_button_no);
-        mActionYes = (TextView) view.findViewById(R.id.certify_fingerprint_button_yes);
+        mActionYes = view.findViewById(R.id.certify_fingerprint_button_yes);
 
-        mFingerprint = (TextView) view.findViewById(R.id.certify_fingerprint_fingerprint);
+        mFingerprint = view.findViewById(R.id.certify_fingerprint_fingerprint);
-        mIntro = (TextView) view.findViewById(R.id.certify_fingerprint_intro);
+        mIntro = view.findViewById(R.id.certify_fingerprint_intro);
-        mHeader = (TextView) view.findViewById(R.id.certify_fingerprint_fingerprint_header);
+        mHeader = view.findViewById(R.id.certify_fingerprint_fingerprint_header);
 
         actionNo.setOnClickListener(new View.OnClickListener() {
             @Override

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

@@ -92,14 +92,14 @@ public class CertifyKeyFragment
     public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.certify_key_fragment, null);
 
-        mCertifyKeySpinner = (CertifyKeySpinner) view.findViewById(R.id.certify_key_spinner);
+        mCertifyKeySpinner = view.findViewById(R.id.certify_key_spinner);
-        mUploadKeyCheckbox = (CheckBox) view.findViewById(R.id.sign_key_upload_checkbox);
+        mUploadKeyCheckbox = view.findViewById(R.id.sign_key_upload_checkbox);
         mMultiUserIdsFragment = (MultiUserIdsFragment)
                 getChildFragmentManager().findFragmentById(R.id.multi_user_ids_fragment);
 
         // make certify image gray, like action icons
         ImageView vActionCertifyImage =
-                (ImageView) view.findViewById(R.id.certify_key_action_certify_image);
+                view.findViewById(R.id.certify_key_action_certify_image);
         vActionCertifyImage.setColorFilter(FormattingUtils.getColorFromAttr(getActivity(), R.attr.colorTertiaryText),
                 PorterDuff.Mode.SRC_IN);
 

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

@@ -86,10 +86,10 @@ public class CreateKeyEmailFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.create_key_email_fragment, container, false);
 
-        mEmailEdit = (EmailEditText) view.findViewById(R.id.create_key_email);
+        mEmailEdit = view.findViewById(R.id.create_key_email);
         View backButton = view.findViewById(R.id.create_key_back_button);
         View nextButton = view.findViewById(R.id.create_key_next_button);
-        RecyclerView emailsRecyclerView = (RecyclerView) view.findViewById(R.id.create_key_emails);
+        RecyclerView emailsRecyclerView = view.findViewById(R.id.create_key_emails);
 
         // initial values
         mEmailEdit.setText(mCreateKeyActivity.mEmail);
@@ -286,8 +286,8 @@ public class CreateKeyEmailFragment extends Fragment {
 
             public ViewHolder(View itemView) {
                 super(itemView);
-                mTextView = (TextView) itemView.findViewById(R.id.create_key_email_item_email);
+                mTextView = itemView.findViewById(R.id.create_key_email_item_email);
-                mDeleteButton = (ImageButton) itemView.findViewById(R.id.create_key_email_item_delete_button);
+                mDeleteButton = itemView.findViewById(R.id.create_key_email_item_delete_button);
             }
         }
 
@@ -296,7 +296,7 @@ public class CreateKeyEmailFragment extends Fragment {
 
             public FooterHolder(View itemView) {
                 super(itemView);
-                mAddButton = (Button) itemView.findViewById(R.id.create_key_add_email);
+                mAddButton = itemView.findViewById(R.id.create_key_add_email);
             }
         }
 

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

@@ -104,13 +104,13 @@ public class CreateKeyFinalFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.create_key_final_fragment, container, false);
 
-        mNameEdit = (TextView) view.findViewById(R.id.name);
+        mNameEdit = view.findViewById(R.id.name);
-        mEmailEdit = (TextView) view.findViewById(R.id.email);
+        mEmailEdit = view.findViewById(R.id.email);
-        mUploadCheckbox = (CheckBox) view.findViewById(R.id.create_key_upload);
+        mUploadCheckbox = view.findViewById(R.id.create_key_upload);
         mBackButton = view.findViewById(R.id.create_key_back_button);
         mCreateButton = view.findViewById(R.id.create_key_next_button);
         mCustomKeyLayout = view.findViewById(R.id.custom_key_layout);
-        mCustomKeyRevertButton = (Button) view.findViewById(R.id.revert_key_configuration);
+        mCustomKeyRevertButton = view.findViewById(R.id.revert_key_configuration);
 
         CreateKeyActivity createKeyActivity = (CreateKeyActivity) getActivity();
 
@@ -261,7 +261,7 @@ public class CreateKeyFinalFragment extends Fragment {
         setHasOptionsMenu(true);
 
         if (savedInstanceState != null && savedInstanceState.containsKey(STATE_CUSTOM_CONFIGURATION)) {
-            keyConfigUseCustom(savedInstanceState.<SaveKeyringParcel>getParcelable(STATE_CUSTOM_CONFIGURATION));
+            keyConfigUseCustom(savedInstanceState.getParcelable(STATE_CUSTOM_CONFIGURATION));
         } else {
             keyConfigRevertToDefault();
         }

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

@@ -53,7 +53,7 @@ public class CreateKeyNameFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.create_key_name_fragment, container, false);
 
-        mNameEdit = (NameEditText) view.findViewById(R.id.create_key_name);
+        mNameEdit = view.findViewById(R.id.create_key_name);
         mBackButton = view.findViewById(R.id.create_key_back_button);
         mNextButton = view.findViewById(R.id.create_key_next_button);
 

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

@@ -91,9 +91,9 @@ public class CreateKeyPassphraseFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.create_key_passphrase_fragment, container, false);
 
-        mPassphraseEdit = (PassphraseEditText) view.findViewById(R.id.create_key_passphrase);
+        mPassphraseEdit = view.findViewById(R.id.create_key_passphrase);
-        mPassphraseEditAgain = (EditText) view.findViewById(R.id.create_key_passphrase_again);
+        mPassphraseEditAgain = view.findViewById(R.id.create_key_passphrase_again);
-        mShowPassphrase = (CheckBox) view.findViewById(R.id.create_key_show_passphrase);
+        mShowPassphrase = view.findViewById(R.id.create_key_show_passphrase);
         mBackButton = view.findViewById(R.id.create_key_back_button);
         mNextButton = view.findViewById(R.id.create_key_next_button);
 

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

@@ -72,7 +72,7 @@ public class CreateKeyStartFragment extends Fragment {
         mCreateKey = view.findViewById(R.id.create_key_create_key_button);
         mImportKey = view.findViewById(R.id.create_key_import_button);
         mSecurityToken = view.findViewById(R.id.create_key_security_token_button);
-        mSkipOrCancel = (TextView) view.findViewById(R.id.create_key_cancel);
+        mSkipOrCancel = view.findViewById(R.id.create_key_cancel);
         mSecureDeviceSetup = view.findViewById(R.id.create_key_secure_device_setup);
 
         if (mCreateKeyActivity.mFirstTime) {

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

@@ -87,9 +87,9 @@ public class CreateSecurityTokenAlgorithmFragment extends Fragment {
             }
         });
 
-        mSignKeySpinner = (Spinner) view.findViewById(R.id.create_key_yubi_key_algorithm_sign);
+        mSignKeySpinner = view.findViewById(R.id.create_key_yubi_key_algorithm_sign);
-        mDecKeySpinner = (Spinner) view.findViewById(R.id.create_key_yubi_key_algorithm_dec);
+        mDecKeySpinner = view.findViewById(R.id.create_key_yubi_key_algorithm_dec);
-        mAuthKeySpinner = (Spinner) view.findViewById(R.id.create_key_yubi_key_algorithm_auth);
+        mAuthKeySpinner = view.findViewById(R.id.create_key_yubi_key_algorithm_auth);
 
         ArrayList<Choice<SupportedKeyType>> choices = new ArrayList<>();
 
@@ -175,8 +175,8 @@ public class CreateSecurityTokenAlgorithmFragment extends Fragment {
 
             Choice c = this.getItem(position);
 
-            TextView text1 = (TextView) convertView.findViewById(android.R.id.text1);
+            TextView text1 = convertView.findViewById(android.R.id.text1);
-            TextView text2 = (TextView) convertView.findViewById(android.R.id.text2);
+            TextView text2 = convertView.findViewById(android.R.id.text2);
 
             text1.setText(c.getName());
             text2.setText(Html.fromHtml(c.getDescription()));

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

@@ -115,9 +115,9 @@ public class CreateSecurityTokenPinFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.create_yubi_key_pin_fragment, container, false);
 
-        mPin = (EditText) view.findViewById(R.id.create_yubi_key_pin);
+        mPin = view.findViewById(R.id.create_yubi_key_pin);
-        mPinRepeat = (EditText) view.findViewById(R.id.create_yubi_key_pin_repeat);
+        mPinRepeat = view.findViewById(R.id.create_yubi_key_pin_repeat);
-        mAdminPin = (TextView) view.findViewById(R.id.create_yubi_key_admin_pin);
+        mAdminPin = view.findViewById(R.id.create_yubi_key_admin_pin);
         mBackButton = view.findViewById(R.id.create_key_back_button);
         mNextButton = view.findViewById(R.id.create_key_next_button);
 

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

@@ -93,7 +93,7 @@ public class DecryptActivity extends BaseActivity {
                     // Binary via content provider (could also be files)
                     // override uri to get stream from send
                     if (intent.hasExtra(Intent.EXTRA_STREAM)) {
-                        uris.add(intent.<Uri>getParcelableExtra(Intent.EXTRA_STREAM));
+                        uris.add(intent.getParcelableExtra(Intent.EXTRA_STREAM));
                     } else if (intent.hasExtra(Intent.EXTRA_TEXT)) {
                         String text = intent.getStringExtra(Intent.EXTRA_TEXT);
                         Uri uri = readToTempFile(text);

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

@@ -89,20 +89,20 @@ public abstract class DecryptFragment extends Fragment implements LoaderManager.
         super.onViewCreated(view, savedInstanceState);
 
         // NOTE: These views are inside the activity!
-        mResultLayout = (LinearLayout) getActivity().findViewById(R.id.result_main_layout);
+        mResultLayout = getActivity().findViewById(R.id.result_main_layout);
         mResultLayout.setVisibility(View.GONE);
-        mEncryptionIcon = (ImageView) getActivity().findViewById(R.id.result_encryption_icon);
+        mEncryptionIcon = getActivity().findViewById(R.id.result_encryption_icon);
-        mEncryptionText = (TextView) getActivity().findViewById(R.id.result_encryption_text);
+        mEncryptionText = getActivity().findViewById(R.id.result_encryption_text);
-        mSignatureIcon = (ImageView) getActivity().findViewById(R.id.result_signature_icon);
+        mSignatureIcon = getActivity().findViewById(R.id.result_signature_icon);
-        mSignatureText = (TextView) getActivity().findViewById(R.id.result_signature_text);
+        mSignatureText = getActivity().findViewById(R.id.result_signature_text);
         mSignatureLayout = getActivity().findViewById(R.id.result_signature_layout);
-        mSignatureName = (TextView) getActivity().findViewById(R.id.result_signature_name);
+        mSignatureName = getActivity().findViewById(R.id.result_signature_name);
-        mSignatureEmail = (TextView) getActivity().findViewById(R.id.result_signature_email);
+        mSignatureEmail = getActivity().findViewById(R.id.result_signature_email);
-        mSignatureAction = (TextView) getActivity().findViewById(R.id.result_signature_action);
+        mSignatureAction = getActivity().findViewById(R.id.result_signature_action);
 
         // Overlay
         mOverlayAnimator = (ViewAnimator) view;
-        Button vErrorOverlayButton = (Button) view.findViewById(R.id.decrypt_error_overlay_button);
+        Button vErrorOverlayButton = view.findViewById(R.id.decrypt_error_overlay_button);
         vErrorOverlayButton.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {

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

@@ -165,7 +165,7 @@ public class DecryptListFragment
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.decrypt_files_list_fragment, container, false);
 
-        RecyclerView vFilesList = (RecyclerView) view.findViewById(R.id.decrypted_files_list);
+        RecyclerView vFilesList = view.findViewById(R.id.decrypted_files_list);
 
         vFilesList.addItemDecoration(new SpacesItemDecoration(
                 FormattingUtils.dpToPx(getActivity(), 4)));
@@ -1203,9 +1203,9 @@ public class DecryptListFragment
 
             public SubViewHolder(View itemView) {
                 vFile = itemView.findViewById(R.id.file);
-                vFilename = (TextView) itemView.findViewById(R.id.filename);
+                vFilename = itemView.findViewById(R.id.filename);
-                vFilesize = (TextView) itemView.findViewById(R.id.filesize);
+                vFilesize = itemView.findViewById(R.id.filesize);
-                vThumbnail = (ImageView) itemView.findViewById(R.id.thumbnail);
+                vThumbnail = itemView.findViewById(R.id.thumbnail);
             }
         }
 
@@ -1215,22 +1215,22 @@ public class DecryptListFragment
         public ViewHolder(View itemView) {
             super(itemView);
 
-            vAnimator = (ViewAnimator) itemView.findViewById(R.id.view_animator);
+            vAnimator = itemView.findViewById(R.id.view_animator);
 
-            vProgress = (ProgressBar) itemView.findViewById(R.id.progress);
+            vProgress = itemView.findViewById(R.id.progress);
-            vProgressMsg = (TextView) itemView.findViewById(R.id.progress_msg);
+            vProgressMsg = itemView.findViewById(R.id.progress_msg);
 
-            vEncStatusIcon = (ImageView) itemView.findViewById(R.id.result_encryption_icon);
+            vEncStatusIcon = itemView.findViewById(R.id.result_encryption_icon);
-            vEncStatusText = (TextView) itemView.findViewById(R.id.result_encryption_text);
+            vEncStatusText = itemView.findViewById(R.id.result_encryption_text);
 
-            vSigStatusIcon = (ImageView) itemView.findViewById(R.id.result_signature_icon);
+            vSigStatusIcon = itemView.findViewById(R.id.result_signature_icon);
-            vSigStatusText = (TextView) itemView.findViewById(R.id.result_signature_text);
+            vSigStatusText = itemView.findViewById(R.id.result_signature_text);
             vSignatureLayout = itemView.findViewById(R.id.result_signature_layout);
-            vSignatureName = (TextView) itemView.findViewById(R.id.result_signature_name);
+            vSignatureName = itemView.findViewById(R.id.result_signature_name);
-            vSignatureMail = (TextView) itemView.findViewById(R.id.result_signature_email);
+            vSignatureMail = itemView.findViewById(R.id.result_signature_email);
-            vSignatureAction = (ViewAnimator) itemView.findViewById(R.id.result_signature_action);
+            vSignatureAction = itemView.findViewById(R.id.result_signature_action);
 
-            vFileList = (LinearLayout) itemView.findViewById(R.id.file_list);
+            vFileList = itemView.findViewById(R.id.file_list);
             for (int i = 0; i < vFileList.getChildCount(); i++) {
                 mFileHolderList.add(new SubViewHolder(vFileList.getChildAt(i)));
                 mCurrentFileListSize += 1;
@@ -1238,10 +1238,10 @@ public class DecryptListFragment
 
             vContextMenu = itemView.findViewById(R.id.context_menu);
 
-            vErrorMsg = (TextView) itemView.findViewById(R.id.result_error_msg);
+            vErrorMsg = itemView.findViewById(R.id.result_error_msg);
-            vErrorViewLog = (ImageView) itemView.findViewById(R.id.result_error_log);
+            vErrorViewLog = itemView.findViewById(R.id.result_error_log);
 
-            vCancelledRetry = (ImageView) itemView.findViewById(R.id.cancel_retry);
+            vCancelledRetry = itemView.findViewById(R.id.cancel_retry);
 
         }
 

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

@@ -148,7 +148,7 @@ public class DeleteKeyDialogActivity extends FragmentActivity {
             @Override
             public RevokeKeyringParcel createOperationInput() {
                 return RevokeKeyringParcel.createRevokeKeyringParcel(mMasterKeyIds[0], true,
-                        (HkpKeyserverAddress) getIntent().getParcelableExtra(EXTRA_KEYSERVER));
+                        getIntent().getParcelableExtra(EXTRA_KEYSERVER));
             }
 
             @Override
@@ -261,7 +261,7 @@ public class DeleteKeyDialogActivity extends FragmentActivity {
             mInflateView = inflater.inflate(R.layout.view_key_delete_fragment, null);
             builder.setView(mInflateView);
 
-            mMainMessage = (TextView) mInflateView.findViewById(R.id.mainMessage);
+            mMainMessage = mInflateView.findViewById(R.id.mainMessage);
 
             // If only a single key has been selected
             if (masterKeyIds.length == 1) {
@@ -358,7 +358,7 @@ public class DeleteKeyDialogActivity extends FragmentActivity {
             View view = inflater.inflate(R.layout.del_rev_dialog, null);
             builder.setView(view);
 
-            final Spinner spinner = (Spinner) view.findViewById(R.id.spinner);
+            final Spinner spinner = view.findViewById(R.id.spinner);
 
             builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
 

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

@@ -95,7 +95,7 @@ public class DisplayTextFragment extends DecryptFragment {
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.decrypt_text_fragment, container, false);
-        mText = (TextView) view.findViewById(R.id.decrypt_text_plaintext);
+        mText = view.findViewById(R.id.decrypt_text_plaintext);
         return view;
     }
 

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

@@ -108,9 +108,9 @@ public class EditIdentitiesFragment extends Fragment
     public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.edit_identities_fragment, null);
 
-        mUploadKeyCheckbox = (CheckBox) view.findViewById(R.id.edit_identities_upload_checkbox);
+        mUploadKeyCheckbox = view.findViewById(R.id.edit_identities_upload_checkbox);
-        mUserIdsList = (ListView) view.findViewById(R.id.edit_identities_user_ids);
+        mUserIdsList = view.findViewById(R.id.edit_identities_user_ids);
-        mUserIdsAddedList = (ListView) view.findViewById(R.id.edit_identities_user_ids_added);
+        mUserIdsAddedList = view.findViewById(R.id.edit_identities_user_ids_added);
         mAddUserId = view.findViewById(R.id.edit_identities_add_user_id);
 
         // If this is a debug build, don't upload by default

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

@@ -131,10 +131,10 @@ public class EditKeyFragment extends QueueingCryptoOperationFragment<SaveKeyring
     public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.edit_key_fragment, superContainer, false);
 
-        mUserIdsList = (ListView) view.findViewById(R.id.edit_key_user_ids);
+        mUserIdsList = view.findViewById(R.id.edit_key_user_ids);
-        mSubkeysList = (ListView) view.findViewById(R.id.edit_key_keys);
+        mSubkeysList = view.findViewById(R.id.edit_key_keys);
-        mUserIdsAddedList = (ListView) view.findViewById(R.id.edit_key_user_ids_added);
+        mUserIdsAddedList = view.findViewById(R.id.edit_key_user_ids_added);
-        mSubkeysAddedList = (ListView) view.findViewById(R.id.edit_key_subkeys_added);
+        mSubkeysAddedList = view.findViewById(R.id.edit_key_subkeys_added);
         mChangePassphrase = view.findViewById(R.id.edit_key_action_change_passphrase);
         mAddUserId = view.findViewById(R.id.edit_key_action_add_user_id);
         mAddSubkey = view.findViewById(R.id.edit_key_action_add_key);
@@ -341,7 +341,7 @@ public class EditKeyFragment extends QueueingCryptoOperationFragment<SaveKeyring
                     // cache new returned passphrase!
                     mSkpBuilder.setNewUnlock(ChangeUnlockParcel.createChangeUnlockParcel(
                             mSkpBuilder.getMasterKeyId(), mSkpBuilder.getFingerprint(),
-                            (Passphrase) data.getParcelable(SetPassphraseDialogFragment.MESSAGE_NEW_PASSPHRASE)));
+                            data.getParcelable(SetPassphraseDialogFragment.MESSAGE_NEW_PASSPHRASE)));
                 }
             }
         };

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

@@ -55,7 +55,7 @@ public class EncryptFilesActivity extends EncryptActivity {
         if (Intent.ACTION_SEND.equals(action) && type != null) {
             // Files via content provider, override uri and action
             uris.clear();
-            uris.add(intent.<Uri>getParcelableExtra(Intent.EXTRA_STREAM));
+            uris.add(intent.getParcelableExtra(Intent.EXTRA_STREAM));
         }
 
         if (Intent.ACTION_SEND_MULTIPLE.equals(action) && type != null) {

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

@@ -103,7 +103,7 @@ public class EncryptFilesFragment
 
     private AfterEncryptAction mAfterEncryptAction;
     private enum AfterEncryptAction {
-        SAVE, SHARE, COPY;
+        SAVE, SHARE, COPY
     }
 
     private ArrayList<Uri> mOutputUris;
@@ -140,7 +140,7 @@ public class EncryptFilesFragment
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.encrypt_files_fragment, container, false);
-        mSelectedFiles = (RecyclerView) view.findViewById(R.id.selected_files_list);
+        mSelectedFiles = view.findViewById(R.id.selected_files_list);
 
         mSelectedFiles.addItemDecoration(new SpacesItemDecoration(
                 FormattingUtils.dpToPx(getActivity(), 4)));
@@ -797,10 +797,10 @@ public class EncryptFilesFragment
 
             public ViewHolder(View itemView) {
                 super(itemView);
-                filename = (TextView) itemView.findViewById(R.id.filename);
+                filename = itemView.findViewById(R.id.filename);
-                fileSize = (TextView) itemView.findViewById(R.id.filesize);
+                fileSize = itemView.findViewById(R.id.filesize);
                 removeButton = itemView.findViewById(R.id.action_remove_file_from_list);
-                thumbnail = (ImageView) itemView.findViewById(R.id.thumbnail);
+                thumbnail = itemView.findViewById(R.id.thumbnail);
             }
         }
 
@@ -809,7 +809,7 @@ public class EncryptFilesFragment
 
             public FooterHolder(View itemView) {
                 super(itemView);
-                mAddButton = (Button) itemView.findViewById(R.id.file_list_entry_add);
+                mAddButton = itemView.findViewById(R.id.file_list_entry_add);
             }
         }
 

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

@@ -80,11 +80,11 @@ public class EncryptModeAsymmetricFragment extends EncryptModeFragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.encrypt_asymmetric_fragment, container, false);
 
-        mSignKeySpinner = (KeySpinner) view.findViewById(R.id.sign);
+        mSignKeySpinner = view.findViewById(R.id.sign);
-        mEncryptKeyView = (EncryptKeyCompletionView) view.findViewById(R.id.recipient_list);
+        mEncryptKeyView = view.findViewById(R.id.recipient_list);
         mEncryptKeyView.setThreshold(1); // Start working from first character
 
-        final ViewAnimator vSignatureIcon = (ViewAnimator) view.findViewById(R.id.result_signature_icon);
+        final ViewAnimator vSignatureIcon = view.findViewById(R.id.result_signature_icon);
         mSignKeySpinner.setOnKeyChangedListener(new OnKeyChangedListener() {
             @Override
             public void onKeyChanged(long masterKeyId) {
@@ -95,7 +95,7 @@ public class EncryptModeAsymmetricFragment extends EncryptModeFragment {
             }
         });
 
-        final ViewAnimator vEncryptionIcon = (ViewAnimator) view.findViewById(R.id.result_encryption_icon);
+        final ViewAnimator vEncryptionIcon = view.findViewById(R.id.result_encryption_icon);
         mEncryptKeyView.setTokenListener(new TokenListener<KeyItem>() {
             @Override
             public void onTokenAdded(KeyItem o) {

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

@@ -47,8 +47,8 @@ public class EncryptModeSymmetricFragment extends EncryptModeFragment {
     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);
+        mPassphrase = view.findViewById(R.id.passphrase);
-        mPassphraseAgain = (EditText) view.findViewById(R.id.passphraseAgain);
+        mPassphraseAgain = view.findViewById(R.id.passphraseAgain);
 
         return view;
     }

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

@@ -77,7 +77,7 @@ public class EncryptTextActivity extends EncryptActivity {
                 sharedText = extras.getString(Intent.EXTRA_TEXT);
             } else  if (extras.containsKey(Intent.EXTRA_STREAM)) {
                 try {
-                    sharedText = FileHelper.readTextFromUri(this, extras.<Uri>getParcelable(Intent.EXTRA_STREAM), null);
+                    sharedText = FileHelper.readTextFromUri(this, extras.getParcelable(Intent.EXTRA_STREAM), null);
                 } catch (IOException e) {
                     Toast.makeText(this, R.string.error_preparing_data, Toast.LENGTH_LONG).show();
                     finish();

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

@@ -98,7 +98,7 @@ public class EncryptTextFragment
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.encrypt_text_fragment, container, false);
 
-        TextView textView = (TextView) view.findViewById(R.id.encrypt_text_text);
+        TextView textView = view.findViewById(R.id.encrypt_text_text);
         textView.addTextChangedListener(new TextWatcher() {
             @Override
             public void beforeTextChanged(CharSequence s, int start, int count, int after) {

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

@@ -42,10 +42,10 @@ public class HelpAboutFragment extends Fragment {
     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);
+        TextView versionText = 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);
+        HtmlTextView aboutTextView = view.findViewById(R.id.help_about_text);
 
         // load markdown from raw resource
         try {

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

@@ -63,9 +63,9 @@ public class HelpActivity extends BaseActivity {
             }
         });
 
-        ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
+        ViewPager viewPager = findViewById(R.id.pager);
         PagerSlidingTabStrip slidingTabLayout =
-                (PagerSlidingTabStrip) findViewById(R.id.sliding_tab_layout);
+                findViewById(R.id.sliding_tab_layout);
 
         mTabsAdapter = new PagerTabStripAdapter(this);
         viewPager.setAdapter(mTabsAdapter);

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

@@ -301,7 +301,7 @@ public class ImportKeysActivity extends BaseActivity implements ImportKeysListen
     private boolean isFingerprintValid(String fingerprint) {
         if (fingerprint == null || fingerprint.length() < 40) {
             Notify.create(this, R.string.import_qr_code_too_short_fingerprint, Notify.Style.ERROR)
-                    .show((ViewGroup) findViewById(R.id.import_snackbar));
+                    .show(findViewById(R.id.import_snackbar));
             return false;
         } else {
             return true;

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

@@ -196,11 +196,11 @@ public class KeyListFragment extends RecyclerFragment<KeySectionedListAdapter>
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.key_list_fragment, container, false);
 
-        mFab = (FloatingActionsMenu) view.findViewById(R.id.fab_main);
+        mFab = view.findViewById(R.id.fab_main);
 
-        FloatingActionButton fabQrCode = (FloatingActionButton) view.findViewById(R.id.fab_add_qr_code);
+        FloatingActionButton fabQrCode = view.findViewById(R.id.fab_add_qr_code);
-        FloatingActionButton fabCloud = (FloatingActionButton) view.findViewById(R.id.fab_add_cloud);
+        FloatingActionButton fabCloud = view.findViewById(R.id.fab_add_cloud);
-        FloatingActionButton fabFile = (FloatingActionButton) view.findViewById(R.id.fab_add_file);
+        FloatingActionButton fabFile = view.findViewById(R.id.fab_add_file);
 
         fabQrCode.setOnClickListener(new OnClickListener() {
             @Override
@@ -246,8 +246,8 @@ public class KeyListFragment extends RecyclerFragment<KeySectionedListAdapter>
         hideList(false);
 
         // click on search button (in empty view) starts query for search string
-        vSearchContainer = (ViewAnimator) activity.findViewById(R.id.search_container);
+        vSearchContainer = activity.findViewById(R.id.search_container);
-        vSearchButton = (Button) activity.findViewById(R.id.search_button);
+        vSearchButton = activity.findViewById(R.id.search_button);
         vSearchButton.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -261,7 +261,7 @@ public class KeyListFragment extends RecyclerFragment<KeySectionedListAdapter>
         setAdapter(adapter);
         setLayoutManager(new LayoutManager(getActivity()));
 
-        FastScroller fastScroller = (FastScroller) getActivity().findViewById(R.id.fastscroll);
+        FastScroller fastScroller = getActivity().findViewById(R.id.fastscroll);
         fastScroller.setRecyclerView(getRecyclerView());
 
         // Prepare the loader. Either re-connect with an existing one,

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

@@ -68,7 +68,7 @@ public class MainActivity extends BaseSecurityTokenActivity implements FabContai
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main_activity);
 
-        mToolbar = (Toolbar) findViewById(R.id.toolbar);
+        mToolbar = findViewById(R.id.toolbar);
         mToolbar.setTitle(R.string.app_name);
         setSupportActionBar(mToolbar);
 

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

@@ -76,7 +76,7 @@ public class MultiUserIdsFragment extends Fragment implements LoaderManager.Load
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.multi_user_ids_fragment, null);
 
-        mUserIds = (ListView) view.findViewById(R.id.view_key_user_ids);
+        mUserIds = view.findViewById(R.id.view_key_user_ids);
 
         return view;
     }

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

@@ -186,12 +186,12 @@ public class PassphraseDialogActivity extends FragmentActivity {
                 alert.setView(view);
 
                 mBackupCodeEditText = new EditText[6];
-                mBackupCodeEditText[0] = (EditText) view.findViewById(R.id.backup_code_1);
+                mBackupCodeEditText[0] = view.findViewById(R.id.backup_code_1);
-                mBackupCodeEditText[1] = (EditText) view.findViewById(R.id.backup_code_2);
+                mBackupCodeEditText[1] = view.findViewById(R.id.backup_code_2);
-                mBackupCodeEditText[2] = (EditText) view.findViewById(R.id.backup_code_3);
+                mBackupCodeEditText[2] = view.findViewById(R.id.backup_code_3);
-                mBackupCodeEditText[3] = (EditText) view.findViewById(R.id.backup_code_4);
+                mBackupCodeEditText[3] = view.findViewById(R.id.backup_code_4);
-                mBackupCodeEditText[4] = (EditText) view.findViewById(R.id.backup_code_5);
+                mBackupCodeEditText[4] = view.findViewById(R.id.backup_code_5);
-                mBackupCodeEditText[5] = (EditText) view.findViewById(R.id.backup_code_6);
+                mBackupCodeEditText[5] = view.findViewById(R.id.backup_code_6);
 
                 setupEditTextFocusNext(mBackupCodeEditText);
 
@@ -205,13 +205,13 @@ public class PassphraseDialogActivity extends FragmentActivity {
             mLayout = (ViewAnimator) inflater.inflate(R.layout.passphrase_dialog, null);
             alert.setView(mLayout);
 
-            mPassphraseText = (TextView) mLayout.findViewById(R.id.passphrase_text);
+            mPassphraseText = mLayout.findViewById(R.id.passphrase_text);
-            mPassphraseEditText = (EditText) mLayout.findViewById(R.id.passphrase_passphrase);
+            mPassphraseEditText = mLayout.findViewById(R.id.passphrase_passphrase);
 
             View vTimeToLiveLayout = mLayout.findViewById(R.id.remember_layout);
             vTimeToLiveLayout.setVisibility(mRequiredInput.mSkipCaching ? View.GONE : View.VISIBLE);
 
-            mTimeToLiveSpinner = (CacheTTLSpinner) mLayout.findViewById(R.id.ttl_spinner);
+            mTimeToLiveSpinner = mLayout.findViewById(R.id.ttl_spinner);
             int ttlSeconds = Preferences.getPreferences(getContext()).getCacheTtlSeconds();
             mTimeToLiveSpinner.setSelectedTimeToLive(ttlSeconds);
 
@@ -293,7 +293,7 @@ public class PassphraseDialogActivity extends FragmentActivity {
             mPassphraseEditText.setImeActionLabel(getString(android.R.string.ok), EditorInfo.IME_ACTION_DONE);
             mPassphraseEditText.setOnEditorActionListener(this);
 
-            final ImageButton keyboard = (ImageButton) mLayout.findViewById(R.id.passphrase_keyboard);
+            final ImageButton keyboard = mLayout.findViewById(R.id.passphrase_keyboard);
 
             if (keyType == CanonicalizedSecretKey.SecretKeyType.DIVERT_TO_CARD) {
                 if (Preferences.getPreferences(activity).useNumKeypadForSecurityTokenPin()) {

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

@@ -45,7 +45,7 @@ public class QrCodeCaptureActivity extends FragmentActivity {
 
         setContentView(R.layout.qr_code_capture_activity);
 
-        barcodeScannerView = (CompoundBarcodeView) findViewById(R.id.zxing_barcode_scanner);
+        barcodeScannerView = findViewById(R.id.zxing_barcode_scanner);
         barcodeScannerView.setStatusText(getString(R.string.import_qr_code_text));
 
         if (savedInstanceState != null) {

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

@@ -65,8 +65,8 @@ public class QrCodeViewActivity extends BaseActivity {
             return;
         }
 
-        mQrCode = (ImageView) findViewById(R.id.qr_code_image);
+        mQrCode = findViewById(R.id.qr_code_image);
-        mQrCodeLayout = (CardView) findViewById(R.id.qr_code_image_layout);
+        mQrCodeLayout = findViewById(R.id.qr_code_image_layout);
 
         mQrCodeLayout.setOnClickListener(new View.OnClickListener() {
             @Override

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

@@ -75,7 +75,7 @@ public class SafeSlingerActivity extends BaseActivity
 
         mMasterKeyId = getIntent().getLongExtra(EXTRA_MASTER_KEY_ID, 0);
 
-        NumberPicker picker = (NumberPicker) findViewById(R.id.safe_slinger_picker);
+        NumberPicker picker = findViewById(R.id.safe_slinger_picker);
         picker.setMinValue(2);
         picker.setMaxValue(10);
         picker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
@@ -85,7 +85,7 @@ public class SafeSlingerActivity extends BaseActivity
             }
         });
 
-        ImageView buttonIcon = (ImageView) findViewById(R.id.safe_slinger_button_image);
+        ImageView buttonIcon = findViewById(R.id.safe_slinger_button_image);
         buttonIcon.setColorFilter(FormattingUtils.getColorFromAttr(this, R.attr.colorTertiaryText),
                 PorterDuff.Mode.SRC_IN);
 

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

@@ -75,7 +75,7 @@ public class SecurityTokenChangePinOperationActivity extends BaseSecurityTokenAc
         super.onCreate(savedInstanceState);
         Timber.d("NfcOperationActivity.onCreate");
 
-        nfcGuideView = (NfcGuideView) findViewById(R.id.nfc_guide_view);
+        nfcGuideView = findViewById(R.id.nfc_guide_view);
 
         // prevent annoying orientation changes while fumbling with the device
         OrientationUtils.lockOrientation(this);
@@ -86,14 +86,14 @@ public class SecurityTokenChangePinOperationActivity extends BaseSecurityTokenAc
 
         setTitle(R.string.security_token_nfc_text);
 
-        vAnimator = (ViewAnimator) findViewById(R.id.view_animator);
+        vAnimator = findViewById(R.id.view_animator);
         vAnimator.setDisplayedChild(0);
 
         nfcGuideView.setCurrentStatus(NfcGuideView.NfcGuideViewStatus.STARTING_POSITION);
 
-        vErrorText = (TextView) findViewById(R.id.security_token_activity_3_error_text);
+        vErrorText = findViewById(R.id.security_token_activity_3_error_text);
-        vErrorTextPin = (TextView) findViewById(R.id.security_token_activity_4_error_text);
+        vErrorTextPin = findViewById(R.id.security_token_activity_4_error_text);
-        vErrorTryAgainButton = (Button) findViewById(R.id.security_token_activity_3_error_try_again);
+        vErrorTryAgainButton = findViewById(R.id.security_token_activity_3_error_try_again);
         vErrorTryAgainButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -105,7 +105,7 @@ public class SecurityTokenChangePinOperationActivity extends BaseSecurityTokenAc
                 nfcGuideView.setCurrentStatus(NfcGuideView.NfcGuideViewStatus.STARTING_POSITION);
             }
         });
-        Button vCancel = (Button) findViewById(R.id.security_token_activity_0_cancel);
+        Button vCancel = findViewById(R.id.security_token_activity_0_cancel);
         vCancel.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {

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

@@ -94,7 +94,7 @@ public class SecurityTokenOperationActivity extends BaseSecurityTokenActivity {
         super.onCreate(savedInstanceState);
         Timber.d("NfcOperationActivity.onCreate");
 
-        nfcGuideView = (NfcGuideView) findViewById(R.id.nfc_guide_view);
+        nfcGuideView = findViewById(R.id.nfc_guide_view);
 
         // prevent annoying orientation changes while fumbling with the device
         OrientationUtils.lockOrientation(this);
@@ -107,13 +107,13 @@ public class SecurityTokenOperationActivity extends BaseSecurityTokenActivity {
 
         setTitle(R.string.security_token_nfc_text);
 
-        vAnimator = (ViewAnimator) findViewById(R.id.view_animator);
+        vAnimator = findViewById(R.id.view_animator);
         vAnimator.setDisplayedChild(0);
 
         nfcGuideView.setCurrentStatus(NfcGuideView.NfcGuideViewStatus.STARTING_POSITION);
 
-        vErrorText = (TextView) findViewById(R.id.security_token_activity_3_error_text);
+        vErrorText = findViewById(R.id.security_token_activity_3_error_text);
-        vErrorTryAgainButton = (Button) findViewById(R.id.security_token_activity_3_error_try_again);
+        vErrorTryAgainButton = findViewById(R.id.security_token_activity_3_error_try_again);
         vErrorTryAgainButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -126,7 +126,7 @@ public class SecurityTokenOperationActivity extends BaseSecurityTokenActivity {
                 nfcGuideView.setCurrentStatus(NfcGuideView.NfcGuideViewStatus.STARTING_POSITION);
             }
         });
-        Button vCancel = (Button) findViewById(R.id.security_token_activity_0_cancel);
+        Button vCancel = findViewById(R.id.security_token_activity_0_cancel);
         vCancel.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {

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

@@ -100,7 +100,7 @@ public class SettingsActivity extends AppCompatPreferenceActivity {
      * Hack to get Toolbar in PreferenceActivity. See http://stackoverflow.com/a/26614696
      */
     private void setupToolbar() {
-        ViewGroup root = (ViewGroup) findViewById(android.R.id.content);
+        ViewGroup root = findViewById(android.R.id.content);
         LinearLayout content = (LinearLayout) root.getChildAt(0);
         LinearLayout toolbarContainer = (LinearLayout) View.inflate(this, R.layout.preference_toolbar, null);
 
@@ -108,7 +108,7 @@ public class SettingsActivity extends AppCompatPreferenceActivity {
         toolbarContainer.addView(content);
         root.addView(toolbarContainer);
 
-        Toolbar toolbar = (Toolbar) toolbarContainer.findViewById(R.id.toolbar);
+        Toolbar toolbar = toolbarContainer.findViewById(R.id.toolbar);
 
         toolbar.setTitle(R.string.title_preferences);
         // noinspection deprecation, TODO use alternative in API level 21

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

@@ -92,7 +92,7 @@ public class SettingsKeyserverFragment extends Fragment implements RecyclerItemC
 
         mAdapter = new KeyserverListAdapter(mKeyserversMutable);
 
-        RecyclerView recyclerView = (RecyclerView) view.findViewById(R.id.keyserver_recycler_view);
+        RecyclerView recyclerView = view.findViewById(R.id.keyserver_recycler_view);
         // recyclerView.setHasFixedSize(true); // the size of the first item changes
         recyclerView.setAdapter(mAdapter);
         recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
@@ -312,11 +312,11 @@ public class SettingsKeyserverFragment extends Fragment implements RecyclerItemC
 
             public ViewHolder(View itemView) {
                 super(itemView);
-                outerLayout = (ViewGroup) itemView.findViewById(R.id.outer_layout);
+                outerLayout = itemView.findViewById(R.id.outer_layout);
-                selectedServerLabel = (TextView) itemView.findViewById(
+                selectedServerLabel = itemView.findViewById(
                         R.id.selected_keyserver_title);
-                keyserverUrl = (TextView) itemView.findViewById(R.id.keyserver_tv);
+                keyserverUrl = itemView.findViewById(R.id.keyserver_tv);
-                dragHandleView = (ImageView) itemView.findViewById(R.id.drag_handle);
+                dragHandleView = itemView.findViewById(R.id.drag_handle);
 
                 itemView.setClickable(true);
             }

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

@@ -95,7 +95,7 @@ public class SettingsSmartPGPAuthorityFragment extends Fragment implements Recyc
         mAuthorities = new ArrayList<>(authorities);
         mAdapter = new AuthorityListAdapter(mAuthorities);
 
-        RecyclerView recyclerView = (RecyclerView) view.findViewById(R.id.smartpgp_authority_recycler_view);
+        RecyclerView recyclerView = view.findViewById(R.id.smartpgp_authority_recycler_view);
         recyclerView.setAdapter(mAdapter);
         recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
 
@@ -316,8 +316,8 @@ public class SettingsSmartPGPAuthorityFragment extends Fragment implements Recyc
 
             public ViewHolder(View itemView) {
                 super(itemView);
-                outerLayout = (ViewGroup) itemView.findViewById(R.id.outer_layout);
+                outerLayout = itemView.findViewById(R.id.outer_layout);
-                authorityName = (TextView) itemView.findViewById(R.id.smartpgp_authority_tv);
+                authorityName = itemView.findViewById(R.id.smartpgp_authority_tv);
                 itemView.setClickable(true);
             }
 

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

@@ -59,7 +59,7 @@ public class UploadKeyActivity extends BaseActivity
         super.onCreate(savedInstanceState);
 
         mUploadButton = findViewById(R.id.upload_key_action_upload);
-        mKeyServerSpinner = (Spinner) findViewById(R.id.upload_key_keyserver);
+        mKeyServerSpinner = findViewById(R.id.upload_key_keyserver);
 
         MultiUserIdsFragment mMultiUserIdsFragment = (MultiUserIdsFragment)
                 getSupportFragmentManager().findFragmentById(R.id.multi_user_ids_fragment);

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

@@ -84,15 +84,15 @@ public class ViewCertActivity extends BaseActivity
         ActionBar actionBar = getSupportActionBar();
         actionBar.setDisplayHomeAsUpEnabled(true);
 
-        mSigneeKey = (TextView) findViewById(R.id.signee_key);
+        mSigneeKey = findViewById(R.id.signee_key);
-        mSigneeUid = (TextView) findViewById(R.id.signee_uid);
+        mSigneeUid = findViewById(R.id.signee_uid);
-        mAlgorithm = (TextView) findViewById(R.id.algorithm);
+        mAlgorithm = findViewById(R.id.algorithm);
-        mType = (TextView) findViewById(R.id.signature_type);
+        mType = findViewById(R.id.signature_type);
-        mReason = (TextView) findViewById(R.id.reason);
+        mReason = findViewById(R.id.reason);
-        mCreation = (TextView) findViewById(R.id.creation);
+        mCreation = findViewById(R.id.creation);
 
-        mCertifierKey = (TextView) findViewById(R.id.signer_key_id);
+        mCertifierKey = findViewById(R.id.signer_key_id);
-        mCertifierUid = (TextView) findViewById(R.id.signer_uid);
+        mCertifierUid = findViewById(R.id.signer_uid);
 
         mRowReason = findViewById(R.id.row_reason);
 

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

@@ -90,8 +90,8 @@ public class ViewKeyAdvActivity extends BaseActivity implements
 
         mKeyRepository = KeyRepository.create(this);
 
-        mViewPager = (ViewPager) findViewById(R.id.pager);
+        mViewPager = findViewById(R.id.pager);
-        mSlidingTabLayout = (PagerSlidingTabStrip) findViewById(R.id.sliding_tab_layout);
+        mSlidingTabLayout = findViewById(R.id.sliding_tab_layout);
 
         mDataUri = getIntent().getData();
         if (mDataUri == null) {

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

@@ -93,8 +93,8 @@ public class ViewKeyAdvShareFragment extends LoaderFragment implements
         View root = super.onCreateView(inflater, superContainer, savedInstanceState);
         View view = inflater.inflate(R.layout.view_key_adv_share_fragment, getContainer());
 
-        mFingerprintView = (TextView) view.findViewById(R.id.view_key_fingerprint);
+        mFingerprintView = view.findViewById(R.id.view_key_fingerprint);
-        mQrCode = (ImageView) view.findViewById(R.id.view_key_qr_code);
+        mQrCode = view.findViewById(R.id.view_key_qr_code);
 
         // We cache the QR code bitmap in its smallest possible size, then scale
         // it manually for the correct size whenever the layout of the ImageView
@@ -123,7 +123,7 @@ public class ViewKeyAdvShareFragment extends LoaderFragment implements
                 }
             }
         });
-        mQrCodeLayout = (CardView) view.findViewById(R.id.view_key_qr_code_layout);
+        mQrCodeLayout = view.findViewById(R.id.view_key_qr_code_layout);
         mQrCodeLayout.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -135,7 +135,7 @@ public class ViewKeyAdvShareFragment extends LoaderFragment implements
         View vFingerprintClipboardButton = view.findViewById(R.id.view_key_action_fingerprint_clipboard);
         View vKeyShareButton = view.findViewById(R.id.view_key_action_key_share);
         View vKeyClipboardButton = view.findViewById(R.id.view_key_action_key_clipboard);
-        ImageButton vKeySafeSlingerButton = (ImageButton) view.findViewById(R.id.view_key_action_key_safeslinger);
+        ImageButton vKeySafeSlingerButton = view.findViewById(R.id.view_key_action_key_safeslinger);
         View vKeySshShareButton = view.findViewById(R.id.view_key_action_key_ssh_share);
         View vKeySshClipboardButton = view.findViewById(R.id.view_key_action_key_ssh_clipboard);
         View vKeyUploadButton = view.findViewById(R.id.view_key_action_upload);

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

@@ -37,8 +37,7 @@ public class ViewKeyAdvStartFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.view_key_adv_start_fragment, container, false);
 
-        HtmlTextView textView = (HtmlTextView)
+        HtmlTextView textView = view.findViewById(R.id.view_key_adv_start_text);
-                view.findViewById(R.id.view_key_adv_start_text);
 
         // load markdown from raw resource
         try {

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

@@ -86,8 +86,8 @@ public class ViewKeyAdvSubkeysFragment extends LoaderFragment implements
         View root = super.onCreateView(inflater, superContainer, savedInstanceState);
         View view = inflater.inflate(R.layout.view_key_adv_subkeys_fragment, getContainer());
 
-        mSubkeysList = (ListView) view.findViewById(R.id.view_key_subkeys);
+        mSubkeysList = view.findViewById(R.id.view_key_subkeys);
-        mSubkeysAddedList = (ListView) view.findViewById(R.id.view_key_subkeys_added);
+        mSubkeysAddedList = view.findViewById(R.id.view_key_subkeys_added);
         mSubkeysAddedLayout = view.findViewById(R.id.view_key_subkeys_add_layout);
 
         mSubkeysList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@@ -108,7 +108,7 @@ public class ViewKeyAdvSubkeysFragment extends LoaderFragment implements
         footer.setLayoutParams(params);
         mSubkeysAddedList.addFooterView(footer, null, false);
 
-        mSubkeyAddFabLayout = (ViewAnimator) view.findViewById(R.id.view_key_subkey_fab_layout);
+        mSubkeyAddFabLayout = view.findViewById(R.id.view_key_subkey_fab_layout);
         view.findViewById(R.id.view_key_subkey_fab).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {

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

@@ -85,8 +85,8 @@ public class ViewKeyAdvUserIdsFragment extends LoaderFragment implements
         View root = super.onCreateView(inflater, superContainer, savedInstanceState);
         View view = inflater.inflate(R.layout.view_key_adv_user_ids_fragment, getContainer());
 
-        mUserIds = (ListView) view.findViewById(R.id.view_key_user_ids);
+        mUserIds = view.findViewById(R.id.view_key_user_ids);
-        mUserIdsAddedList = (ListView) view.findViewById(R.id.view_key_user_ids_added);
+        mUserIdsAddedList = view.findViewById(R.id.view_key_user_ids_added);
         mUserIdsAddedLayout = view.findViewById(R.id.view_key_user_ids_add_layout);
 
         mUserIds.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@@ -107,7 +107,7 @@ public class ViewKeyAdvUserIdsFragment extends LoaderFragment implements
         footer.setLayoutParams(params);
         mUserIdsAddedList.addFooterView(footer, null, false);
 
-        mUserIdAddFabLayout = (ViewAnimator) view.findViewById(R.id.view_key_subkey_fab_layout);
+        mUserIdAddFabLayout = view.findViewById(R.id.view_key_subkey_fab_layout);
         view.findViewById(R.id.view_key_subkey_fab).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {

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

@@ -105,10 +105,10 @@ public class ViewKeyKeybaseFragment extends LoaderFragment implements
         View view = inflater.inflate(R.layout.view_key_adv_keybase_fragment, getContainer());
         mInflater = inflater;
 
-        mReportHeader = (TextView) view.findViewById(R.id.view_key_trust_cloud_narrative);
+        mReportHeader = view.findViewById(R.id.view_key_trust_cloud_narrative);
-        mProofListing = (TableLayout) view.findViewById(R.id.view_key_proof_list);
+        mProofListing = view.findViewById(R.id.view_key_proof_list);
         mProofVerifyHeader = view.findViewById(R.id.view_key_proof_verify_header);
-        mProofVerifyDetail = (TextView) view.findViewById(R.id.view_key_proof_verify_detail);
+        mProofVerifyDetail = view.findViewById(R.id.view_key_proof_verify_detail);
         mReportHeader.setVisibility(View.GONE);
         mProofListing.setVisibility(View.GONE);
         mProofVerifyHeader.setVisibility(View.GONE);
@@ -337,8 +337,8 @@ public class ViewKeyKeybaseFragment extends LoaderFragment implements
             int rowNumber = 1;
             for (CharSequence s : result.mProofs) {
                 TableRow row = (TableRow) mInflater.inflate(R.layout.view_key_adv_keybase_proof, null);
-                TextView number = (TextView) row.findViewById(R.id.proof_number);
+                TextView number = row.findViewById(R.id.proof_number);
-                TextView text = (TextView) row.findViewById(R.id.proof_text);
+                TextView text = row.findViewById(R.id.proof_text);
                 number.setText(Integer.toString(rowNumber++) + ". ");
                 text.setText(s);
                 text.setMovementMethod(LinkMovementMethod.getInstance());

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

@@ -97,9 +97,9 @@ public class CertSectionedListAdapter extends SectionCursorAdapter<CertCursor, S
             itemView.setClickable(true);
             itemView.setOnClickListener(this);
 
-            mSignerName = (TextView) itemView.findViewById(R.id.signerName);
+            mSignerName = itemView.findViewById(R.id.signerName);
-            mSignStatus = (TextView) itemView.findViewById(R.id.signStatus);
+            mSignStatus = itemView.findViewById(R.id.signStatus);
-            mSignerKeyId = (TextView) itemView.findViewById(R.id.signerKeyId);
+            mSignerKeyId = itemView.findViewById(R.id.signerKeyId);
         }
 
         public void bind(CertCursor cursor) {
@@ -154,7 +154,7 @@ public class CertSectionedListAdapter extends SectionCursorAdapter<CertCursor, S
 
         public CertSectionViewHolder(View itemView) {
             super(itemView);
-            mHeaderText = (TextView) itemView.findViewById(R.id.stickylist_header_text);
+            mHeaderText = itemView.findViewById(R.id.stickylist_header_text);
         }
 
         public void bind(String text) {

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

@@ -140,10 +140,10 @@ public class IdentityAdapter extends RecyclerView.Adapter<ViewHolder> {
         public LinkedIdViewHolder(View view, final IdentityClickListener identityClickListener) {
             super(view);
 
-            vVerified = (ImageView) view.findViewById(R.id.linked_id_certified_icon);
+            vVerified = view.findViewById(R.id.linked_id_certified_icon);
-            vIcon = (ImageView) view.findViewById(R.id.linked_id_type_icon);
+            vIcon = view.findViewById(R.id.linked_id_type_icon);
-            vTitle = (TextView) view.findViewById(R.id.linked_id_title);
+            vTitle = view.findViewById(R.id.linked_id_title);
-            vComment = (TextView) view.findViewById(R.id.linked_id_comment);
+            vComment = view.findViewById(R.id.linked_id_comment);
 
             view.setOnClickListener(new OnClickListener() {
                 @Override
@@ -214,12 +214,12 @@ public class IdentityAdapter extends RecyclerView.Adapter<ViewHolder> {
         private UserIdViewHolder(View view, final IdentityClickListener identityClickListener) {
             super(view);
 
-            vName = (TextView) view.findViewById(R.id.user_id_item_name);
+            vName = view.findViewById(R.id.user_id_item_name);
-            vAddress = (TextView) view.findViewById(R.id.user_id_item_address);
+            vAddress = view.findViewById(R.id.user_id_item_address);
-            vComment = (TextView) view.findViewById(R.id.user_id_item_comment);
+            vComment = view.findViewById(R.id.user_id_item_comment);
 
-            vIcon = (ImageView) view.findViewById(R.id.trust_id_app_icon);
+            vIcon = view.findViewById(R.id.trust_id_app_icon);
-            vMore = (ImageView) view.findViewById(R.id.user_id_item_more);
+            vMore = view.findViewById(R.id.user_id_item_more);
 
             view.setOnClickListener(new OnClickListener() {
                 @Override

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

@@ -113,12 +113,12 @@ public class KeyAdapter extends CursorAdapter {
         public KeyItemViewHolder(View view) {
             mView = view;
             mLayoutData = view.findViewById(R.id.key_list_item_data);
-            mMainUserId = (TextView) view.findViewById(R.id.key_list_item_name);
+            mMainUserId = view.findViewById(R.id.key_list_item_name);
-            mMainUserIdRest = (TextView) view.findViewById(R.id.key_list_item_email);
+            mMainUserIdRest = view.findViewById(R.id.key_list_item_email);
-            mStatus = (ImageView) view.findViewById(R.id.key_list_item_status_icon);
+            mStatus = view.findViewById(R.id.key_list_item_status_icon);
             mSlinger = view.findViewById(R.id.key_list_item_slinger_view);
-            mSlingerButton = (ImageButton) view.findViewById(R.id.key_list_item_slinger_button);
+            mSlingerButton = view.findViewById(R.id.key_list_item_slinger_button);
-            mCreationDate = (TextView) view.findViewById(R.id.key_list_item_creation);
+            mCreationDate = view.findViewById(R.id.key_list_item_creation);
         }
 
         public void setData(Context context, KeyItem item, Highlighter highlighter, boolean enabled) {

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

@@ -363,13 +363,13 @@ public class KeySectionedListAdapter extends SectionCursorAdapter<KeySectionedLi
         KeyItemViewHolder(View itemView) {
             super(itemView);
 
-            mMainUserId = (TextView) itemView.findViewById(R.id.key_list_item_name);
+            mMainUserId = itemView.findViewById(R.id.key_list_item_name);
-            mMainUserIdRest = (TextView) itemView.findViewById(R.id.key_list_item_email);
+            mMainUserIdRest = itemView.findViewById(R.id.key_list_item_email);
-            mStatus = (ImageView) itemView.findViewById(R.id.key_list_item_status_icon);
+            mStatus = itemView.findViewById(R.id.key_list_item_status_icon);
             mSlinger = itemView.findViewById(R.id.key_list_item_slinger_view);
-            mSlingerButton = (ImageButton) itemView.findViewById(R.id.key_list_item_slinger_button);
+            mSlingerButton = itemView.findViewById(R.id.key_list_item_slinger_button);
-            mCreationDate = (TextView) itemView.findViewById(R.id.key_list_item_creation);
+            mCreationDate = itemView.findViewById(R.id.key_list_item_creation);
-            mTrustIdIcon = (ImageView) itemView.findViewById(R.id.key_list_item_tid_icon);
+            mTrustIdIcon = itemView.findViewById(R.id.key_list_item_tid_icon);
 
             itemView.setClickable(true);
             itemView.setLongClickable(true);
@@ -563,7 +563,7 @@ public class KeySectionedListAdapter extends SectionCursorAdapter<KeySectionedLi
 
         public KeyHeaderViewHolder(View itemView) {
             super(itemView);
-            mText1 = (TextView) itemView.findViewById(android.R.id.text1);
+            mText1 = itemView.findViewById(android.R.id.text1);
         }
 
         public void bind(String title) {

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

@@ -48,7 +48,7 @@ public class KeySelectableAdapter extends KeyAdapter implements OnItemClickListe
 
         public KeySelectableItemViewHolder(View view) {
             super(view);
-            mCheckbox = (CheckBox) view.findViewById(R.id.selected);
+            mCheckbox = view.findViewById(R.id.selected);
         }
 
         public void setCheckedState(boolean checked) {

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

@@ -75,9 +75,9 @@ public class MultiUserIdsAdapter extends CursorAdapter {
 
     @Override
     public void bindView(View view, Context context, Cursor cursor) {
-        TextView vHeaderId = (TextView) view.findViewById(R.id.user_id_header);
+        TextView vHeaderId = view.findViewById(R.id.user_id_header);
-        TextView vName = (TextView) view.findViewById(R.id.user_id_item_name);
+        TextView vName = view.findViewById(R.id.user_id_item_name);
-        TextView vAddresses = (TextView) view.findViewById(R.id.user_id_item_addresses);
+        TextView vAddresses = view.findViewById(R.id.user_id_item_addresses);
 
         byte[] data = cursor.getBlob(1);
         int isHeader = cursor.getInt(2);
@@ -135,7 +135,7 @@ public class MultiUserIdsAdapter extends CursorAdapter {
             vAddresses.setVisibility(View.GONE);
         }
 
-        final CheckBox vCheckBox = (CheckBox) view.findViewById(R.id.user_id_item_check_box);
+        final CheckBox vCheckBox = view.findViewById(R.id.user_id_item_check_box);
         final int position = cursor.getPosition();
         vCheckBox.setOnCheckedChangeListener(null);
         vCheckBox.setChecked(mCheckStates.get(position));

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

@@ -152,8 +152,8 @@ public class NestedLogAdapter extends RecyclerView.Adapter<NestedLogAdapter.LogE
         public LogEntryViewHolder(View itemView) {
             super(itemView);
 
-            mLogText = (TextView) itemView.findViewById(R.id.log_text);
+            mLogText = itemView.findViewById(R.id.log_text);
-            mLogImg = (ImageView) itemView.findViewById(R.id.log_img);
+            mLogImg = itemView.findViewById(R.id.log_img);
         }
 
         public void bind(OperationResult.LogEntryParcel entry, int indentFactor) {
@@ -213,8 +213,8 @@ public class NestedLogAdapter extends RecyclerView.Adapter<NestedLogAdapter.LogE
             itemView.setClickable(true);
             itemView.setOnClickListener(this);
 
-            mSublogText = (TextView) itemView.findViewById(R.id.log_second_text);
+            mSublogText = itemView.findViewById(R.id.log_second_text);
-            mSublogImg = (ImageView) itemView.findViewById(R.id.log_second_img);
+            mSublogImg = itemView.findViewById(R.id.log_second_img);
         }
 
         @Override

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

@@ -152,18 +152,18 @@ public class SubkeysAdapter extends CursorAdapter {
 
     @Override
     public void bindView(View view, Context context, Cursor cursor) {
-        TextView vKeyId = (TextView) view.findViewById(R.id.subkey_item_key_id);
+        TextView vKeyId = view.findViewById(R.id.subkey_item_key_id);
-        TextView vKeyDetails = (TextView) view.findViewById(R.id.subkey_item_details);
+        TextView vKeyDetails = view.findViewById(R.id.subkey_item_details);
-        TextView vKeyExpiry = (TextView) view.findViewById(R.id.subkey_item_expiry);
+        TextView vKeyExpiry = view.findViewById(R.id.subkey_item_expiry);
-        ImageView vCertifyIcon = (ImageView) view.findViewById(R.id.subkey_item_ic_certify);
+        ImageView vCertifyIcon = view.findViewById(R.id.subkey_item_ic_certify);
-        ImageView vSignIcon = (ImageView) view.findViewById(R.id.subkey_item_ic_sign);
+        ImageView vSignIcon = view.findViewById(R.id.subkey_item_ic_sign);
-        ImageView vEncryptIcon = (ImageView) view.findViewById(R.id.subkey_item_ic_encrypt);
+        ImageView vEncryptIcon = view.findViewById(R.id.subkey_item_ic_encrypt);
-        ImageView vAuthenticateIcon = (ImageView) view.findViewById(R.id.subkey_item_ic_authenticate);
+        ImageView vAuthenticateIcon = view.findViewById(R.id.subkey_item_ic_authenticate);
-        ImageView vEditImage = (ImageView) view.findViewById(R.id.subkey_item_edit_image);
+        ImageView vEditImage = view.findViewById(R.id.subkey_item_edit_image);
-        ImageView vStatus = (ImageView) view.findViewById(R.id.subkey_item_status);
+        ImageView vStatus = view.findViewById(R.id.subkey_item_status);
 
         // not used:
-        ImageView deleteImage = (ImageView) view.findViewById(R.id.subkey_item_delete_button);
+        ImageView deleteImage = view.findViewById(R.id.subkey_item_delete_button);
         deleteImage.setVisibility(View.GONE);
 
         long keyId = cursor.getLong(INDEX_KEY_ID);
@@ -334,7 +334,7 @@ public class SubkeysAdapter extends CursorAdapter {
     public View newView(Context context, Cursor cursor, ViewGroup parent) {
         View view = mInflater.inflate(R.layout.view_key_adv_subkey_item, null);
         if (mDefaultTextColor == null) {
-            TextView keyId = (TextView) view.findViewById(R.id.subkey_item_key_id);
+            TextView keyId = view.findViewById(R.id.subkey_item_key_id);
             mDefaultTextColor = keyId.getTextColors();
         }
         return view;

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

@@ -73,21 +73,21 @@ public class SubkeysAddedAdapter extends ArrayAdapter<SaveKeyringParcel.SubkeyAd
             // Not recycled, inflate a new view
             convertView = mInflater.inflate(R.layout.view_key_adv_subkey_item, parent, false);
             final ViewHolder holder = new ViewHolder();
-            holder.vKeyId = (TextView) convertView.findViewById(R.id.subkey_item_key_id);
+            holder.vKeyId = convertView.findViewById(R.id.subkey_item_key_id);
-            holder.vKeyDetails = (TextView) convertView.findViewById(R.id.subkey_item_details);
+            holder.vKeyDetails = convertView.findViewById(R.id.subkey_item_details);
-            holder.vKeyExpiry = (TextView) convertView.findViewById(R.id.subkey_item_expiry);
+            holder.vKeyExpiry = convertView.findViewById(R.id.subkey_item_expiry);
-            holder.vCertifyIcon = (ImageView) convertView.findViewById(R.id.subkey_item_ic_certify);
+            holder.vCertifyIcon = convertView.findViewById(R.id.subkey_item_ic_certify);
-            holder.vSignIcon = (ImageView) convertView.findViewById(R.id.subkey_item_ic_sign);
+            holder.vSignIcon = convertView.findViewById(R.id.subkey_item_ic_sign);
-            holder.vEncryptIcon = (ImageView) convertView.findViewById(R.id.subkey_item_ic_encrypt);
+            holder.vEncryptIcon = convertView.findViewById(R.id.subkey_item_ic_encrypt);
-            holder.vAuthenticateIcon = (ImageView) convertView.findViewById(R.id.subkey_item_ic_authenticate);
+            holder.vAuthenticateIcon = convertView.findViewById(R.id.subkey_item_ic_authenticate);
 
-            holder.vDelete = (ImageButton) convertView.findViewById(R.id.subkey_item_delete_button);
+            holder.vDelete = convertView.findViewById(R.id.subkey_item_delete_button);
             holder.vDelete.setVisibility(View.VISIBLE); // always visible
 
             // not used:
-            ImageView vEdit = (ImageView) convertView.findViewById(R.id.subkey_item_edit_image);
+            ImageView vEdit = convertView.findViewById(R.id.subkey_item_edit_image);
             vEdit.setVisibility(View.GONE);
-            ImageView vStatus = (ImageView) convertView.findViewById(R.id.subkey_item_status);
+            ImageView vStatus = convertView.findViewById(R.id.subkey_item_status);
             vStatus.setVisibility(View.GONE);
 
             convertView.setTag(holder);

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

@@ -56,13 +56,13 @@ public class UserIdsAdapter extends UserAttributesAdapter {
 
     @Override
     public void bindView(View view, Context context, Cursor cursor) {
-        TextView vName = (TextView) view.findViewById(R.id.user_id_item_name);
+        TextView vName = view.findViewById(R.id.user_id_item_name);
-        TextView vAddress = (TextView) view.findViewById(R.id.user_id_item_address);
+        TextView vAddress = view.findViewById(R.id.user_id_item_address);
-        TextView vComment = (TextView) view.findViewById(R.id.user_id_item_comment);
+        TextView vComment = view.findViewById(R.id.user_id_item_comment);
-        ImageView vVerified = (ImageView) view.findViewById(R.id.user_id_item_certified);
+        ImageView vVerified = view.findViewById(R.id.user_id_item_certified);
-        ViewAnimator vVerifiedLayout = (ViewAnimator) view.findViewById(R.id.user_id_icon_animator);
+        ViewAnimator vVerifiedLayout = view.findViewById(R.id.user_id_icon_animator);
 
-        ImageView vDeleteButton = (ImageView) view.findViewById(R.id.user_id_item_delete_button);
+        ImageView vDeleteButton = view.findViewById(R.id.user_id_item_delete_button);
         vDeleteButton.setVisibility(View.GONE); // not used
 
         String userId = cursor.getString(INDEX_USER_ID);

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

@@ -66,15 +66,15 @@ public class UserIdsAddedAdapter extends ArrayAdapter<String> {
             // Not recycled, inflate a new view
             convertView = mInflater.inflate(R.layout.view_key_adv_user_id_item, null);
             final ViewHolder holder = new ViewHolder();
-            holder.vAddress = (TextView) convertView.findViewById(R.id.user_id_item_address);
+            holder.vAddress = convertView.findViewById(R.id.user_id_item_address);
-            holder.vName = (TextView) convertView.findViewById(R.id.user_id_item_name);
+            holder.vName = convertView.findViewById(R.id.user_id_item_name);
-            holder.vComment = (TextView) convertView.findViewById(R.id.user_id_item_comment);
+            holder.vComment = convertView.findViewById(R.id.user_id_item_comment);
-            holder.vDelete = (ImageButton) convertView.findViewById(R.id.user_id_item_delete_button);
+            holder.vDelete = convertView.findViewById(R.id.user_id_item_delete_button);
             holder.vDelete.setVisibility(View.VISIBLE); // always visible
 
             // not used:
             View certifiedLayout = convertView.findViewById(R.id.user_id_icon_animator);
-            ImageView editImage = (ImageView) convertView.findViewById(R.id.user_id_item_edit_image);
+            ImageView editImage = convertView.findViewById(R.id.user_id_item_edit_image);
             certifiedLayout.setVisibility(View.GONE);
             editImage.setVisibility(View.GONE);
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/BaseActivity.java

@@ -87,7 +87,7 @@ public abstract class BaseActivity extends AppCompatActivity {
     }
 
     protected void initToolbar() {
-        mToolbar = (Toolbar) findViewById(R.id.toolbar);
+        mToolbar = findViewById(R.id.toolbar);
         if (mToolbar != null) {
             setSupportActionBar(mToolbar);
             getSupportActionBar().setDisplayHomeAsUpEnabled(true);
@@ -121,7 +121,7 @@ public abstract class BaseActivity extends AppCompatActivity {
                 .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
         final View customActionBarView = inflater.inflate(R.layout.full_screen_dialog, null);
 
-        TextView firstTextView = ((TextView) customActionBarView.findViewById(R.id.full_screen_dialog_done_text));
+        TextView firstTextView = customActionBarView.findViewById(R.id.full_screen_dialog_done_text);
         firstTextView.setText(doneText);
         customActionBarView.findViewById(R.id.full_screen_dialog_done).setOnClickListener(
                 doneOnClickListener);
@@ -174,12 +174,12 @@ public abstract class BaseActivity extends AppCompatActivity {
         final View customActionBarView = inflater.inflate(
                 R.layout.full_screen_dialog_2, null);
 
-        TextView firstTextView = ((TextView) customActionBarView.findViewById(R.id.actionbar_done_text));
+        TextView firstTextView = customActionBarView.findViewById(R.id.actionbar_done_text);
         firstTextView.setText(firstText);
         firstTextView.setCompoundDrawablesWithIntrinsicBounds(firstDrawableId, 0, 0, 0);
         customActionBarView.findViewById(R.id.actionbar_done).setOnClickListener(
                 firstOnClickListener);
-        TextView secondTextView = ((TextView) customActionBarView.findViewById(R.id.actionbar_cancel_text));
+        TextView secondTextView = customActionBarView.findViewById(R.id.actionbar_cancel_text);
         secondTextView.setText(secondText);
         secondTextView.setCompoundDrawablesWithIntrinsicBounds(secondDrawableId, 0, 0, 0);
         customActionBarView.findViewById(R.id.actionbar_cancel).setOnClickListener(

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/LoaderFragment.java

@@ -45,7 +45,7 @@ public abstract class LoaderFragment extends Fragment {
         View root = inflater.inflate(R.layout.loader_layout, container, false);
 
         mContentShown = true;
-        mContainer = (ViewGroup) root.findViewById(R.id.loader_container);
+        mContainer = root.findViewById(R.id.loader_container);
         mProgressContainer = root.findViewById(R.id.loader_progress);
 
         // content is not shown (by visibility statuses in the layout files)

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

@@ -129,12 +129,12 @@ public class AddEditKeyserverDialogFragment extends DialogFragment implements On
         View view = inflater.inflate(R.layout.add_keyserver_dialog, null);
         alert.setView(view);
 
-        mKeyserverEditText = (EditText) view.findViewById(R.id.keyserver_url_edit_text);
+        mKeyserverEditText = view.findViewById(R.id.keyserver_url_edit_text);
-        mKeyserverEditTextLayout = (TextInputLayout) view.findViewById(R.id.keyserver_url_edit_text_layout);
+        mKeyserverEditTextLayout = view.findViewById(R.id.keyserver_url_edit_text_layout);
-        mKeyserverEditOnionText = (EditText) view.findViewById(R.id.keyserver_onion_edit_text);
+        mKeyserverEditOnionText = view.findViewById(R.id.keyserver_onion_edit_text);
-        mKeyserverEditOnionTextLayout = (TextInputLayout) view.findViewById(R.id.keyserver_onion_edit_text_layout);
+        mKeyserverEditOnionTextLayout = view.findViewById(R.id.keyserver_onion_edit_text_layout);
-        mVerifyKeyserverCheckBox = (CheckBox) view.findViewById(R.id.verify_connection_checkbox);
+        mVerifyKeyserverCheckBox = view.findViewById(R.id.verify_connection_checkbox);
-        mOnlyTrustedKeyserverCheckBox = (CheckBox) view.findViewById(R.id.only_trusted_keyserver_checkbox);
+        mOnlyTrustedKeyserverCheckBox = view.findViewById(R.id.only_trusted_keyserver_checkbox);
         mVerifyKeyserverCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

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

@@ -114,9 +114,9 @@ public class AddEditSmartPGPAuthorityDialogFragment extends DialogFragment imple
         View view = inflater.inflate(R.layout.add_smartpgp_authority_dialog, null);
         alert.setView(view);
 
-        mAuthorityAliasText = (EditText) view.findViewById(R.id.smartpgp_authority_alias_edit_text);
+        mAuthorityAliasText = view.findViewById(R.id.smartpgp_authority_alias_edit_text);
-        mAuthorityAliasTextLayout = (TextInputLayout) view.findViewById(R.id.smartpgp_authority_alias_edit_text_layout);
+        mAuthorityAliasTextLayout = view.findViewById(R.id.smartpgp_authority_alias_edit_text_layout);
-        mAuthorityAdd = (Button) view.findViewById(R.id.smartpgp_authority_filename);
+        mAuthorityAdd = view.findViewById(R.id.smartpgp_authority_filename);
 
         mAuthorityAdd.setOnClickListener(new View.OnClickListener() {
             @Override

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

@@ -79,7 +79,7 @@ public class AddEmailDialogFragment extends DialogFragment implements OnEditorAc
         View view = inflater.inflate(R.layout.add_email_dialog, null);
         alert.setView(view);
 
-        mEmail = (EmailEditText) view.findViewById(R.id.add_email_address);
+        mEmail = view.findViewById(R.id.add_email_address);
 
         alert.setPositiveButton(android.R.string.ok, new OnClickListener() {
             @Override

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

@@ -113,16 +113,16 @@ public class AddSubkeyDialogFragment extends DialogFragment {
         View view = mInflater.inflate(R.layout.add_subkey_dialog, null);
         dialog.setView(view);
 
-        mNoExpiryCheckBox = (CheckBox) view.findViewById(R.id.add_subkey_no_expiry);
+        mNoExpiryCheckBox = view.findViewById(R.id.add_subkey_no_expiry);
-        mExpiryRow = (TableRow) view.findViewById(R.id.add_subkey_expiry_row);
+        mExpiryRow = view.findViewById(R.id.add_subkey_expiry_row);
-        mExpiryDatePicker = (DatePicker) view.findViewById(R.id.add_subkey_expiry_date_picker);
+        mExpiryDatePicker = view.findViewById(R.id.add_subkey_expiry_date_picker);
-        mKeyTypeSpinner = (Spinner) view.findViewById(R.id.add_subkey_type);
+        mKeyTypeSpinner = view.findViewById(R.id.add_subkey_type);
-        mUsageRadioGroup = (RadioGroup) view.findViewById(R.id.add_subkey_usage_group);
+        mUsageRadioGroup = view.findViewById(R.id.add_subkey_usage_group);
-        mUsageNone = (RadioButton) view.findViewById(R.id.add_subkey_usage_none);
+        mUsageNone = view.findViewById(R.id.add_subkey_usage_none);
-        mUsageSign = (RadioButton) view.findViewById(R.id.add_subkey_usage_sign);
+        mUsageSign = view.findViewById(R.id.add_subkey_usage_sign);
-        mUsageEncrypt = (RadioButton) view.findViewById(R.id.add_subkey_usage_encrypt);
+        mUsageEncrypt = view.findViewById(R.id.add_subkey_usage_encrypt);
-        mUsageSignAndEncrypt = (RadioButton) view.findViewById(R.id.add_subkey_usage_sign_and_encrypt);
+        mUsageSignAndEncrypt = view.findViewById(R.id.add_subkey_usage_sign_and_encrypt);
-        mUsageAuthentication = (RadioButton) view.findViewById(R.id.add_subkey_usage_authentication);
+        mUsageAuthentication = view.findViewById(R.id.add_subkey_usage_authentication);
 
         if(mWillBeMasterKey) {
             dialog.setTitle(R.string.title_change_master_key);
@@ -351,8 +351,8 @@ public class AddSubkeyDialogFragment extends DialogFragment {
 
             Choice c = this.getItem(position);
 
-            TextView text1 = (TextView) convertView.findViewById(android.R.id.text1);
+            TextView text1 = convertView.findViewById(android.R.id.text1);
-            TextView text2 = (TextView) convertView.findViewById(android.R.id.text2);
+            TextView text2 = convertView.findViewById(android.R.id.text2);
 
             text1.setText(c.getName());
             text2.setText(Html.fromHtml(c.getDescription()));

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

@@ -86,8 +86,8 @@ public class AddUserIdDialogFragment extends DialogFragment implements OnEditorA
         View view = inflater.inflate(R.layout.add_user_id_dialog, null);
         alert.setView(view);
 
-        mName = (NameEditText) view.findViewById(R.id.add_user_id_name);
+        mName = view.findViewById(R.id.add_user_id_name);
-        mEmail = (EmailEditText) view.findViewById(R.id.add_user_id_address);
+        mEmail = view.findViewById(R.id.add_user_id_address);
 
         mName.setText(predefinedName);
 

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

@@ -166,7 +166,7 @@ public class DeleteFileDialogFragment extends DialogFragment {
      */
     public interface OnDeletedListener {
 
-        public void onDeleted();
+        void onDeleted();
 
     }
 

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

@@ -101,10 +101,10 @@ public class EditSubkeyExpiryDialogFragment extends DialogFragment {
         View view = inflater.inflate(R.layout.edit_subkey_expiry_dialog, null);
         alert.setView(view);
 
-        final CheckBox noExpiry = (CheckBox) view.findViewById(R.id.edit_subkey_expiry_no_expiry);
+        final CheckBox noExpiry = view.findViewById(R.id.edit_subkey_expiry_no_expiry);
-        final DatePicker datePicker = (DatePicker) view.findViewById(R.id.edit_subkey_expiry_date_picker);
+        final DatePicker datePicker = view.findViewById(R.id.edit_subkey_expiry_date_picker);
-        final TextView currentExpiry = (TextView) view.findViewById(R.id.edit_subkey_expiry_current_expiry);
+        final TextView currentExpiry = view.findViewById(R.id.edit_subkey_expiry_current_expiry);
-        final LinearLayout expiryLayout = (LinearLayout) view.findViewById(R.id.edit_subkey_expiry_layout);
+        final LinearLayout expiryLayout = view.findViewById(R.id.edit_subkey_expiry_layout);
 
         noExpiry.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override

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

@@ -95,9 +95,9 @@ public class SetPassphraseDialogFragment extends DialogFragment implements OnEdi
         View view = inflater.inflate(R.layout.passphrase_repeat_dialog, null);
         alert.setView(view);
 
-        mPassphraseEditText = (PassphraseEditText) view.findViewById(R.id.passphrase_passphrase);
+        mPassphraseEditText = view.findViewById(R.id.passphrase_passphrase);
-        mPassphraseAgainEditText = (EditText) view.findViewById(R.id.passphrase_passphrase_again);
+        mPassphraseAgainEditText = view.findViewById(R.id.passphrase_passphrase_again);
-        mNoPassphraseCheckBox = (CheckBox) view.findViewById(R.id.passphrase_no_passphrase);
+        mNoPassphraseCheckBox = view.findViewById(R.id.passphrase_no_passphrase);
 
         mNoPassphraseCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/keyview/LinkedIdViewFragment.java

@@ -270,10 +270,10 @@ public class LinkedIdViewFragment extends CryptoOperationFragment implements
         private final TextSwitcher vText;
 
         ViewHolder(View root) {
-            vLinkedCerts = (CertListWidget) root.findViewById(R.id.linked_id_certs);
+            vLinkedCerts = root.findViewById(R.id.linked_id_certs);
-            vKeySpinner = (CertifyKeySpinner) root.findViewById(R.id.cert_key_spinner);
+            vKeySpinner = root.findViewById(R.id.cert_key_spinner);
             vKeySpinnerContainer = root.findViewById(R.id.cert_key_spincontainer);
-            vButtonSwitcher = (ViewAnimator) root.findViewById(R.id.button_animator);
+            vButtonSwitcher = root.findViewById(R.id.button_animator);
 
             mLinkedIdHolder = new IdentityAdapter.LinkedIdViewHolder(root, null);
 
@@ -282,11 +282,11 @@ public class LinkedIdViewFragment extends CryptoOperationFragment implements
             vButtonConfirm = root.findViewById(R.id.button_confirm);
             vButtonView = root.findViewById(R.id.button_view);
 
-            vVerifyingContainer = (ViewAnimator) root.findViewById(R.id.linked_verify_container);
+            vVerifyingContainer = root.findViewById(R.id.linked_verify_container);
-            vItemCertified = (ViewAnimator) root.findViewById(R.id.linked_id_certified);
+            vItemCertified = root.findViewById(R.id.linked_id_certified);
 
-            vProgress = (ViewAnimator) root.findViewById(R.id.linked_cert_progress);
+            vProgress = root.findViewById(R.id.linked_cert_progress);
-            vText = (TextSwitcher) root.findViewById(R.id.linked_cert_text);
+            vText = root.findViewById(R.id.linked_cert_text);
         }
 
         enum VerifyState {

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

@@ -180,18 +180,18 @@ public class ViewKeyActivity extends BaseSecurityTokenActivity implements
 
         setTitle(null);
 
-        mStatusText = (TextView) findViewById(R.id.view_key_status);
+        mStatusText = findViewById(R.id.view_key_status);
-        mStatusImage = (ImageView) findViewById(R.id.view_key_status_image);
+        mStatusImage = findViewById(R.id.view_key_status_image);
-        mAppBarLayout = (AppBarLayout) findViewById(R.id.app_bar_layout);
+        mAppBarLayout = findViewById(R.id.app_bar_layout);
-        mCollapsingToolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
+        mCollapsingToolbarLayout = findViewById(R.id.collapsing_toolbar);
 
-        mActionEncryptFile = (ImageButton) findViewById(R.id.view_key_action_encrypt_files);
+        mActionEncryptFile = findViewById(R.id.view_key_action_encrypt_files);
-        mActionEncryptText = (ImageButton) findViewById(R.id.view_key_action_encrypt_text);
+        mActionEncryptText = findViewById(R.id.view_key_action_encrypt_text);
-        mFab = (FloatingActionButton) findViewById(R.id.fab);
+        mFab = findViewById(R.id.fab);
-        mPhoto = (ImageView) findViewById(R.id.view_key_photo);
+        mPhoto = findViewById(R.id.view_key_photo);
-        mPhotoLayout = (FrameLayout) findViewById(R.id.view_key_photo_layout);
+        mPhotoLayout = findViewById(R.id.view_key_photo_layout);
-        mQrCode = (ImageView) findViewById(R.id.view_key_qr_code);
+        mQrCode = findViewById(R.id.view_key_qr_code);
-        mQrCodeLayout = (CardView) findViewById(R.id.view_key_qr_code_layout);
+        mQrCodeLayout = findViewById(R.id.view_key_qr_code_layout);
 
         mRotateSpin = AnimationUtils.loadAnimation(this, R.anim.rotate_spin);
 
@@ -436,7 +436,7 @@ public class ViewKeyActivity extends BaseSecurityTokenActivity implements
                     // use new passphrase!
                     mChangeUnlockParcel = ChangeUnlockParcel.createChangeUnlockParcel(
                             mMasterKeyId, mFingerprint,
-                            (Passphrase) data.getParcelable(SetPassphraseDialogFragment.MESSAGE_NEW_PASSPHRASE)
+                            data.getParcelable(SetPassphraseDialogFragment.MESSAGE_NEW_PASSPHRASE)
                     );
 
                     mEditOpHelper.cryptoOperation();

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/keyview/ViewKeyFragment.java

@@ -91,11 +91,11 @@ public class ViewKeyFragment extends LoaderFragment implements ViewKeyMvpView, O
         View root = super.onCreateView(inflater, superContainer, savedInstanceState);
         View view = inflater.inflate(R.layout.view_key_fragment, getContainer());
 
-        mIdentitiesCardView = (IdentitiesCardView) view.findViewById(R.id.card_identities);
+        mIdentitiesCardView = view.findViewById(R.id.card_identities);
 
-        mSystemContactCard = (SystemContactCardView) view.findViewById(R.id.linked_system_contact_card);
+        mSystemContactCard = view.findViewById(R.id.linked_system_contact_card);
-        mKeyStatusHealth = (KeyHealthView) view.findViewById(R.id.key_status_health);
+        mKeyStatusHealth = view.findViewById(R.id.key_status_health);
-        mKeyStatusKeyserver = (KeyserverStatusView) view.findViewById(R.id.key_status_keyserver);
+        mKeyStatusKeyserver = view.findViewById(R.id.key_status_keyserver);
 
         return root;
     }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/keyview/view/IdentitiesCardView.java

@@ -46,11 +46,11 @@ public class IdentitiesCardView extends CardView implements IdentitiesMvpView {
 
         View view = LayoutInflater.from(context).inflate(R.layout.identities_card, this, true);
 
-        vIdentities = (RecyclerView) view.findViewById(R.id.view_key_user_ids);
+        vIdentities = view.findViewById(R.id.view_key_user_ids);
         vIdentities.setLayoutManager(new LinearLayoutManager(context));
         vIdentities.addItemDecoration(new DividerItemDecoration(context, DividerItemDecoration.VERTICAL_LIST, false));
 
-        userIdsEditButton = (Button) view.findViewById(R.id.view_key_card_user_ids_edit);
+        userIdsEditButton = view.findViewById(R.id.view_key_card_user_ids_edit);
         userIdsEditButton.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -60,7 +60,7 @@ public class IdentitiesCardView extends CardView implements IdentitiesMvpView {
             }
         });
 
-        linkedIdsAddButton = (Button) view.findViewById(R.id.view_key_card_linked_ids_add);
+        linkedIdsAddButton = view.findViewById(R.id.view_key_card_linked_ids_add);
         linkedIdsAddButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/keyview/view/KeyHealthView.java

@@ -69,22 +69,22 @@ public class KeyHealthView extends LinearLayout implements KeyHealthMvpView, OnC
         View view = LayoutInflater.from(context).inflate(R.layout.key_health_card_content, this, true);
 
         vLayout = view.findViewById(R.id.key_health_layout);
-        vTitle = (TextView) view.findViewById(R.id.key_health_title);
+        vTitle = view.findViewById(R.id.key_health_title);
-        vSubtitle = (TextView) view.findViewById(R.id.key_health_subtitle);
+        vSubtitle = view.findViewById(R.id.key_health_subtitle);
-        vIcon = (ImageView) view.findViewById(R.id.key_health_icon);
+        vIcon = view.findViewById(R.id.key_health_icon);
-        vExpander = (ImageView) view.findViewById(R.id.key_health_expander);
+        vExpander = view.findViewById(R.id.key_health_expander);
 
         vLayout.setOnClickListener(this);
 
         vKeyStatusDivider = view.findViewById(R.id.key_health_divider);
-        vKeyStatusList = (KeyStatusList) view.findViewById(R.id.key_health_status_list);
+        vKeyStatusList = view.findViewById(R.id.key_health_status_list);
 
         vInsecureLayout = view.findViewById(R.id.key_insecure_layout);
-        vInsecureProblem = (TextView) view.findViewById(R.id.key_insecure_problem);
+        vInsecureProblem = view.findViewById(R.id.key_insecure_problem);
-        vInsecureSolution = (TextView) view.findViewById(R.id.key_insecure_solution);
+        vInsecureSolution = view.findViewById(R.id.key_insecure_solution);
 
         vExpiryLayout = view.findViewById(R.id.key_expiry_layout);
-        vExpiryText = (TextView) view.findViewById(R.id.key_expiry_text);
+        vExpiryText = view.findViewById(R.id.key_expiry_text);
     }
 
     private enum KeyHealthDisplayStatus {

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/keyview/view/KeyStatusList.java

@@ -50,13 +50,13 @@ public class KeyStatusList extends LinearLayout implements KeyStatusMvpView {
         vSignLayout = view.findViewById(R.id.cap_sign);
         vDecryptLayout = view.findViewById(R.id.cap_decrypt);
 
-        vCertText = (TextView) view.findViewById(R.id.cap_cert_text);
+        vCertText = view.findViewById(R.id.cap_cert_text);
-        vSignText = (TextView) view.findViewById(R.id.cap_sign_text);
+        vSignText = view.findViewById(R.id.cap_sign_text);
-        vDecryptText = (TextView) view.findViewById(R.id.cap_decrypt_text);
+        vDecryptText = view.findViewById(R.id.cap_decrypt_text);
 
-        vCertIcon = (ImageView) view.findViewById(R.id.cap_cert_icon);
+        vCertIcon = view.findViewById(R.id.cap_cert_icon);
-        vSignIcon = (ImageView) view.findViewById(R.id.cap_sign_icon);
+        vSignIcon = view.findViewById(R.id.cap_sign_icon);
-        vDecryptIcon = (ImageView) view.findViewById(R.id.cap_decrypt_icon);
+        vDecryptIcon = view.findViewById(R.id.cap_decrypt_icon);
 
         vCertToken = view.findViewById(R.id.cap_cert_security_token);
         vSignToken = view.findViewById(R.id.cap_sign_security_token);

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/keyview/view/KeyserverStatusView.java

@@ -50,9 +50,9 @@ public class KeyserverStatusView extends FrameLayout implements KeyserverStatusM
 
         vLayout = view.findViewById(R.id.keyserver_status_layout);
 
-        vTitle = (TextView) view.findViewById(R.id.keyserver_status_title);
+        vTitle = view.findViewById(R.id.keyserver_status_title);
-        vSubtitle = (TextView) view.findViewById(R.id.keyserver_status_subtitle);
+        vSubtitle = view.findViewById(R.id.keyserver_status_subtitle);
-        vIcon = (ImageView) view.findViewById(R.id.keyserver_icon);
+        vIcon = view.findViewById(R.id.keyserver_icon);
 //        vExpander = (ImageView) view.findViewById(R.id.key_health_expander);
     }
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/keyview/view/SystemContactCardView.java

@@ -46,9 +46,9 @@ public class SystemContactCardView extends CardView implements SystemContactMvpV
 
         View view = LayoutInflater.from(context).inflate(R.layout.system_contact_card, this, true);
 
-        vSystemContactLayout = (LinearLayout) view.findViewById(R.id.system_contact_layout);
+        vSystemContactLayout = view.findViewById(R.id.system_contact_layout);
-        vSystemContactName = (TextView) view.findViewById(R.id.system_contact_name);
+        vSystemContactName = view.findViewById(R.id.system_contact_name);
-        vSystemContactPicture = (ImageView) view.findViewById(R.id.system_contact_picture);
+        vSystemContactPicture = view.findViewById(R.id.system_contact_picture);
 
         vSystemContactLayout.setOnClickListener(this);
     }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateFinalFragment.java

@@ -85,10 +85,10 @@ public abstract class LinkedIdCreateFinalFragment extends CryptoOperationFragmen
             }
         });
 
-        mVerifyAnimator = (ViewAnimator) view.findViewById(R.id.verify_progress);
+        mVerifyAnimator = view.findViewById(R.id.verify_progress);
-        mVerifyImage = (ImageView) view.findViewById(R.id.verify_image);
+        mVerifyImage = view.findViewById(R.id.verify_image);
-        mVerifyStatus = (TextView) view.findViewById(R.id.verify_status);
+        mVerifyStatus = view.findViewById(R.id.verify_status);
-        mVerifyButtonAnimator = (ViewAnimator) view.findViewById(R.id.verify_buttons);
+        mVerifyButtonAnimator = view.findViewById(R.id.verify_buttons);
 
         view.findViewById(R.id.button_verify).setOnClickListener(new OnClickListener() {
             @Override

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateGithubFragment.java

@@ -112,18 +112,18 @@ public class LinkedIdCreateGithubFragment extends CryptoOperationFragment<SaveKe
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.linked_create_github_fragment, container, false);
 
-        mButtonContainer = (ViewAnimator) view.findViewById(R.id.button_container);
+        mButtonContainer = view.findViewById(R.id.button_container);
 
-        mStatus1 = (StatusIndicator) view.findViewById(R.id.linked_status_step1);
+        mStatus1 = view.findViewById(R.id.linked_status_step1);
-        mStatus2 = (StatusIndicator) view.findViewById(R.id.linked_status_step2);
+        mStatus2 = view.findViewById(R.id.linked_status_step2);
-        mStatus3 = (StatusIndicator) view.findViewById(R.id.linked_status_step3);
+        mStatus3 = view.findViewById(R.id.linked_status_step3);
 
-        mRetryButton = (Button) view.findViewById(R.id.button_retry);
+        mRetryButton = view.findViewById(R.id.button_retry);
 
         ((ImageView) view.findViewById(R.id.linked_id_type_icon)).setImageResource(R.drawable.linked_github);
         ((ImageView) view.findViewById(R.id.linked_id_certified_icon)).setImageResource(R.drawable.octo_link_24dp);
-        mLinkedIdTitle = (TextView) view.findViewById(R.id.linked_id_title);
+        mLinkedIdTitle = view.findViewById(R.id.linked_id_title);
-        mLinkedIdComment = (TextView) view.findViewById(R.id.linked_id_comment);
+        mLinkedIdComment = view.findViewById(R.id.linked_id_comment);
 
         view.findViewById(R.id.back_button).setOnClickListener(new View.OnClickListener() {
             @Override
@@ -535,7 +535,7 @@ public class LinkedIdCreateGithubFragment extends CryptoOperationFragment<SaveKe
 
         final Dialog auth_dialog = new Dialog(activity);
         auth_dialog.setContentView(R.layout.oauth_webview);
-        WebView web = (WebView) auth_dialog.findViewById(R.id.web_view);
+        WebView web = auth_dialog.findViewById(R.id.web_view);
         web.getSettings().setSaveFormData(false);
         web.getSettings().setJavaScriptEnabled(true);
         web.getSettings().setUserAgentString("OpenKeychain " + BuildConfig.VERSION_NAME);