XmppActivity.java

   1package eu.siacs.conversations.ui;
   2
   3import android.telephony.TelephonyManager;
   4
   5import android.Manifest;
   6import android.annotation.SuppressLint;
   7import android.annotation.TargetApi;
   8import android.app.PendingIntent;
   9import android.content.ActivityNotFoundException;
  10import android.content.ClipData;
  11import android.content.ClipboardManager;
  12import android.content.ComponentName;
  13import android.content.Context;
  14import android.content.ContextWrapper;
  15import android.content.DialogInterface;
  16import android.content.Intent;
  17import android.content.IntentSender.SendIntentException;
  18import android.content.ServiceConnection;
  19import android.content.SharedPreferences;
  20import android.content.pm.PackageManager;
  21import android.content.pm.ResolveInfo;
  22import android.content.res.Resources;
  23import android.content.res.TypedArray;
  24import android.graphics.Bitmap;
  25import android.graphics.Color;
  26import android.graphics.Point;
  27import android.graphics.drawable.AnimatedImageDrawable;
  28import android.graphics.drawable.BitmapDrawable;
  29import android.graphics.drawable.Drawable;
  30import android.net.ConnectivityManager;
  31import android.net.Uri;
  32import android.os.AsyncTask;
  33import android.os.Build;
  34import android.os.Bundle;
  35import android.os.Handler;
  36import android.os.IBinder;
  37import android.os.PowerManager;
  38import android.os.SystemClock;
  39import android.preference.PreferenceManager;
  40import android.text.Html;
  41import android.text.InputType;
  42import android.util.DisplayMetrics;
  43import android.util.Log;
  44import android.util.Pair;
  45import android.view.Menu;
  46import android.view.MenuItem;
  47import android.view.View;
  48import android.webkit.ValueCallback;
  49import android.widget.Button;
  50import android.widget.CheckBox;
  51import android.widget.ImageView;
  52import android.widget.Toast;
  53
  54import androidx.annotation.BoolRes;
  55import androidx.annotation.NonNull;
  56import androidx.annotation.RequiresApi;
  57import androidx.annotation.StringRes;
  58import androidx.appcompat.app.AlertDialog;
  59import androidx.appcompat.app.AlertDialog.Builder;
  60import androidx.appcompat.app.AppCompatDelegate;
  61import androidx.databinding.DataBindingUtil;
  62
  63import com.google.common.base.Strings;
  64
  65import java.io.IOException;
  66import java.lang.ref.WeakReference;
  67import java.util.ArrayList;
  68import java.util.HashMap;
  69import java.util.List;
  70import java.util.PriorityQueue;
  71import java.util.concurrent.RejectedExecutionException;
  72
  73import eu.siacs.conversations.Config;
  74import eu.siacs.conversations.R;
  75import eu.siacs.conversations.crypto.PgpEngine;
  76import eu.siacs.conversations.databinding.DialogQuickeditBinding;
  77import eu.siacs.conversations.entities.Account;
  78import eu.siacs.conversations.entities.Contact;
  79import eu.siacs.conversations.entities.Conversation;
  80import eu.siacs.conversations.entities.Message;
  81import eu.siacs.conversations.entities.Presences;
  82import eu.siacs.conversations.services.AvatarService;
  83import eu.siacs.conversations.services.BarcodeProvider;
  84import eu.siacs.conversations.services.EmojiInitializationService;
  85import eu.siacs.conversations.services.QuickConversationsService;
  86import eu.siacs.conversations.services.XmppConnectionService;
  87import eu.siacs.conversations.services.XmppConnectionService.XmppConnectionBinder;
  88import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
  89import eu.siacs.conversations.ui.util.PresenceSelector;
  90import eu.siacs.conversations.ui.util.SoftKeyboardUtils;
  91import eu.siacs.conversations.utils.AccountUtils;
  92import eu.siacs.conversations.utils.Compatibility;
  93import eu.siacs.conversations.utils.ExceptionHelper;
  94import eu.siacs.conversations.ui.util.SettingsUtils;
  95import eu.siacs.conversations.utils.SignupUtils;
  96import eu.siacs.conversations.utils.ThemeHelper;
  97import eu.siacs.conversations.xmpp.Jid;
  98import eu.siacs.conversations.xmpp.OnKeyStatusUpdated;
  99import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
 100
 101public abstract class XmppActivity extends ActionBarActivity {
 102
 103    public static final String EXTRA_ACCOUNT = "account";
 104    protected static final int REQUEST_ANNOUNCE_PGP = 0x0101;
 105    protected static final int REQUEST_INVITE_TO_CONVERSATION = 0x0102;
 106    protected static final int REQUEST_CHOOSE_PGP_ID = 0x0103;
 107    protected static final int REQUEST_BATTERY_OP = 0x49ff;
 108    protected static final int REQUEST_POST_NOTIFICATION = 0x50ff;
 109    public XmppConnectionService xmppConnectionService;
 110    public boolean xmppConnectionServiceBound = false;
 111
 112    protected static final String FRAGMENT_TAG_DIALOG = "dialog";
 113
 114    private boolean isCameraFeatureAvailable = false;
 115
 116    protected int mTheme;
 117    protected HashMap<Integer,Integer> mCustomColors;
 118    protected boolean mUsingEnterKey = false;
 119    protected boolean mUseTor = false;
 120    protected Toast mToast;
 121    public Runnable onOpenPGPKeyPublished = () -> Toast.makeText(XmppActivity.this, R.string.openpgp_has_been_published, Toast.LENGTH_SHORT).show();
 122    protected ConferenceInvite mPendingConferenceInvite = null;
 123    protected PriorityQueue<Pair<Integer, ValueCallback<Uri[]>>> activityCallbacks =
 124        Build.VERSION.SDK_INT >= 24 ? new PriorityQueue<>((x, y) -> y.first.compareTo(x.first)) : new PriorityQueue<>();
 125    protected ServiceConnection mConnection = new ServiceConnection() {
 126
 127        @Override
 128        public void onServiceConnected(ComponentName className, IBinder service) {
 129            XmppConnectionBinder binder = (XmppConnectionBinder) service;
 130            xmppConnectionService = binder.getService();
 131            xmppConnectionServiceBound = true;
 132            registerListeners();
 133            onBackendConnected();
 134        }
 135
 136        @Override
 137        public void onServiceDisconnected(ComponentName arg0) {
 138            xmppConnectionServiceBound = false;
 139        }
 140    };
 141    private DisplayMetrics metrics;
 142    private long mLastUiRefresh = 0;
 143    private final Handler mRefreshUiHandler = new Handler();
 144    private final Runnable mRefreshUiRunnable = () -> {
 145        mLastUiRefresh = SystemClock.elapsedRealtime();
 146        refreshUiReal();
 147    };
 148    private final UiCallback<Conversation> adhocCallback = new UiCallback<Conversation>() {
 149        @Override
 150        public void success(final Conversation conversation) {
 151            runOnUiThread(() -> {
 152                switchToConversation(conversation);
 153                hideToast();
 154            });
 155        }
 156
 157        @Override
 158        public void error(final int errorCode, Conversation object) {
 159            runOnUiThread(() -> replaceToast(getString(errorCode)));
 160        }
 161
 162        @Override
 163        public void userInputRequired(PendingIntent pi, Conversation object) {
 164
 165        }
 166    };
 167    public boolean mSkipBackgroundBinding = false;
 168
 169    public static boolean cancelPotentialWork(Message message, ImageView imageView) {
 170        final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
 171
 172        if (bitmapWorkerTask != null) {
 173            final Message oldMessage = bitmapWorkerTask.message;
 174            if (oldMessage == null || message != oldMessage) {
 175                bitmapWorkerTask.cancel(true);
 176            } else {
 177                return false;
 178            }
 179        }
 180        return true;
 181    }
 182
 183    private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
 184        if (imageView != null) {
 185            final Drawable drawable = imageView.getDrawable();
 186            if (drawable instanceof AsyncDrawable) {
 187                final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
 188                return asyncDrawable.getBitmapWorkerTask();
 189            }
 190        }
 191        return null;
 192    }
 193
 194    protected void hideToast() {
 195        if (mToast != null) {
 196            mToast.cancel();
 197        }
 198    }
 199
 200    protected void replaceToast(String msg) {
 201        replaceToast(msg, true);
 202    }
 203
 204    protected void replaceToast(String msg, boolean showlong) {
 205        hideToast();
 206        mToast = Toast.makeText(this, msg, showlong ? Toast.LENGTH_LONG : Toast.LENGTH_SHORT);
 207        mToast.show();
 208    }
 209
 210    protected final void refreshUi() {
 211        final long diff = SystemClock.elapsedRealtime() - mLastUiRefresh;
 212        if (diff > Config.REFRESH_UI_INTERVAL) {
 213            mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 214            runOnUiThread(mRefreshUiRunnable);
 215        } else {
 216            final long next = Config.REFRESH_UI_INTERVAL - diff;
 217            mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 218            mRefreshUiHandler.postDelayed(mRefreshUiRunnable, next);
 219        }
 220    }
 221
 222    abstract protected void refreshUiReal();
 223
 224    @Override
 225    protected void onStart() {
 226        super.onStart();
 227        if (!xmppConnectionServiceBound) {
 228            if (this.mSkipBackgroundBinding) {
 229                Log.d(Config.LOGTAG, "skipping background binding");
 230            } else {
 231                connectToBackend();
 232            }
 233        } else {
 234            this.registerListeners();
 235            this.onBackendConnected();
 236        }
 237        this.mUsingEnterKey = usingEnterKey();
 238        this.mUseTor = useTor();
 239    }
 240
 241    public void connectToBackend() {
 242        Intent intent = new Intent(this, XmppConnectionService.class);
 243        intent.setAction("ui");
 244        try {
 245            startService(intent);
 246        } catch (IllegalStateException e) {
 247            Log.w(Config.LOGTAG, "unable to start service from " + getClass().getSimpleName());
 248        }
 249        bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
 250    }
 251
 252    @Override
 253    protected void onStop() {
 254        super.onStop();
 255        if (xmppConnectionServiceBound) {
 256            this.unregisterListeners();
 257            unbindService(mConnection);
 258            xmppConnectionServiceBound = false;
 259        }
 260    }
 261
 262
 263    public boolean hasPgp() {
 264        return xmppConnectionService.getPgpEngine() != null;
 265    }
 266
 267    public void showInstallPgpDialog() {
 268        Builder builder = new AlertDialog.Builder(this);
 269        builder.setTitle(getString(R.string.openkeychain_required));
 270        builder.setIconAttribute(android.R.attr.alertDialogIcon);
 271        builder.setMessage(Html.fromHtml(getString(R.string.openkeychain_required_long, getString(R.string.app_name))));
 272        builder.setNegativeButton(getString(R.string.cancel), null);
 273        builder.setNeutralButton(getString(R.string.restart),
 274                (dialog, which) -> {
 275                    if (xmppConnectionServiceBound) {
 276                        unbindService(mConnection);
 277                        xmppConnectionServiceBound = false;
 278                    }
 279                    stopService(new Intent(XmppActivity.this,
 280                            XmppConnectionService.class));
 281                    finish();
 282                });
 283        builder.setPositiveButton(getString(R.string.install),
 284                (dialog, which) -> {
 285                    Uri uri = Uri
 286                            .parse("market://details?id=org.sufficientlysecure.keychain");
 287                    Intent marketIntent = new Intent(Intent.ACTION_VIEW,
 288                            uri);
 289                    PackageManager manager = getApplicationContext()
 290                            .getPackageManager();
 291                    List<ResolveInfo> infos = manager
 292                            .queryIntentActivities(marketIntent, 0);
 293                    if (infos.size() > 0) {
 294                        startActivity(marketIntent);
 295                    } else {
 296                        uri = Uri.parse("http://www.openkeychain.org/");
 297                        Intent browserIntent = new Intent(
 298                                Intent.ACTION_VIEW, uri);
 299                        startActivity(browserIntent);
 300                    }
 301                    finish();
 302                });
 303        builder.create().show();
 304    }
 305
 306    protected void deleteAccount(final Account account) {
 307        this.deleteAccount(account, null);
 308    }
 309
 310    protected void deleteAccount(final Account account, final Runnable postDelete) {
 311        final AlertDialog.Builder builder = new AlertDialog.Builder(this);
 312        final View dialogView = getLayoutInflater().inflate(R.layout.dialog_delete_account, null);
 313        final CheckBox deleteFromServer =
 314                dialogView.findViewById(R.id.delete_from_server);
 315        builder.setView(dialogView);
 316        builder.setTitle(R.string.mgmt_account_delete);
 317        builder.setPositiveButton(getString(R.string.delete),null);
 318        builder.setNegativeButton(getString(R.string.cancel), null);
 319        final AlertDialog dialog = builder.create();
 320        dialog.setOnShowListener(dialogInterface->{
 321            final Button button = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
 322            button.setOnClickListener(v -> {
 323                final boolean unregister = deleteFromServer.isChecked();
 324                if (unregister) {
 325                    if (account.isOnlineAndConnected()) {
 326                        deleteFromServer.setEnabled(false);
 327                        button.setText(R.string.please_wait);
 328                        button.setEnabled(false);
 329                        xmppConnectionService.unregisterAccount(account, result -> {
 330                            if (result) {
 331                                dialog.dismiss();
 332                                if (postDelete != null) {
 333                                    postDelete.run();
 334                                }
 335                                if (xmppConnectionService.getAccounts().size() == 0 && Config.MAGIC_CREATE_DOMAIN != null) {
 336                                    final Intent intent = SignupUtils.getSignUpIntent(this);
 337                                    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
 338                                    startActivity(intent);
 339                                }
 340                            } else {
 341                                deleteFromServer.setEnabled(true);
 342                                button.setText(R.string.delete);
 343                                button.setEnabled(true);
 344                                Toast.makeText(this,R.string.could_not_delete_account_from_server,Toast.LENGTH_LONG).show();
 345                            }
 346                        });
 347                    } else {
 348                        Toast.makeText(this,R.string.not_connected_try_again,Toast.LENGTH_LONG).show();
 349                    }
 350                } else {
 351                    xmppConnectionService.deleteAccount(account);
 352                    dialog.dismiss();
 353                    if (xmppConnectionService.getAccounts().size() == 0 && Config.MAGIC_CREATE_DOMAIN != null) {
 354                        final Intent intent = SignupUtils.getSignUpIntent(this);
 355                        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
 356                        startActivity(intent);
 357                    } else if (postDelete != null) {
 358                        postDelete.run();
 359                    }
 360                }
 361            });
 362        });
 363        dialog.show();
 364    }
 365
 366    abstract void onBackendConnected();
 367
 368    protected void registerListeners() {
 369        if (this instanceof XmppConnectionService.OnConversationUpdate) {
 370            this.xmppConnectionService.setOnConversationListChangedListener((XmppConnectionService.OnConversationUpdate) this);
 371        }
 372        if (this instanceof XmppConnectionService.OnAccountUpdate) {
 373            this.xmppConnectionService.setOnAccountListChangedListener((XmppConnectionService.OnAccountUpdate) this);
 374        }
 375        if (this instanceof XmppConnectionService.OnCaptchaRequested) {
 376            this.xmppConnectionService.setOnCaptchaRequestedListener((XmppConnectionService.OnCaptchaRequested) this);
 377        }
 378        if (this instanceof XmppConnectionService.OnRosterUpdate) {
 379            this.xmppConnectionService.setOnRosterUpdateListener((XmppConnectionService.OnRosterUpdate) this);
 380        }
 381        if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 382            this.xmppConnectionService.setOnMucRosterUpdateListener((XmppConnectionService.OnMucRosterUpdate) this);
 383        }
 384        if (this instanceof OnUpdateBlocklist) {
 385            this.xmppConnectionService.setOnUpdateBlocklistListener((OnUpdateBlocklist) this);
 386        }
 387        if (this instanceof XmppConnectionService.OnShowErrorToast) {
 388            this.xmppConnectionService.setOnShowErrorToastListener((XmppConnectionService.OnShowErrorToast) this);
 389        }
 390        if (this instanceof OnKeyStatusUpdated) {
 391            this.xmppConnectionService.setOnKeyStatusUpdatedListener((OnKeyStatusUpdated) this);
 392        }
 393        if (this instanceof XmppConnectionService.OnJingleRtpConnectionUpdate) {
 394            this.xmppConnectionService.setOnRtpConnectionUpdateListener((XmppConnectionService.OnJingleRtpConnectionUpdate) this);
 395        }
 396    }
 397
 398    protected void unregisterListeners() {
 399        if (this instanceof XmppConnectionService.OnConversationUpdate) {
 400            this.xmppConnectionService.removeOnConversationListChangedListener((XmppConnectionService.OnConversationUpdate) this);
 401        }
 402        if (this instanceof XmppConnectionService.OnAccountUpdate) {
 403            this.xmppConnectionService.removeOnAccountListChangedListener((XmppConnectionService.OnAccountUpdate) this);
 404        }
 405        if (this instanceof XmppConnectionService.OnCaptchaRequested) {
 406            this.xmppConnectionService.removeOnCaptchaRequestedListener((XmppConnectionService.OnCaptchaRequested) this);
 407        }
 408        if (this instanceof XmppConnectionService.OnRosterUpdate) {
 409            this.xmppConnectionService.removeOnRosterUpdateListener((XmppConnectionService.OnRosterUpdate) this);
 410        }
 411        if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 412            this.xmppConnectionService.removeOnMucRosterUpdateListener((XmppConnectionService.OnMucRosterUpdate) this);
 413        }
 414        if (this instanceof OnUpdateBlocklist) {
 415            this.xmppConnectionService.removeOnUpdateBlocklistListener((OnUpdateBlocklist) this);
 416        }
 417        if (this instanceof XmppConnectionService.OnShowErrorToast) {
 418            this.xmppConnectionService.removeOnShowErrorToastListener((XmppConnectionService.OnShowErrorToast) this);
 419        }
 420        if (this instanceof OnKeyStatusUpdated) {
 421            this.xmppConnectionService.removeOnNewKeysAvailableListener((OnKeyStatusUpdated) this);
 422        }
 423        if (this instanceof XmppConnectionService.OnJingleRtpConnectionUpdate) {
 424            this.xmppConnectionService.removeRtpConnectionUpdateListener((XmppConnectionService.OnJingleRtpConnectionUpdate) this);
 425        }
 426    }
 427
 428    @Override
 429    public boolean onOptionsItemSelected(final MenuItem item) {
 430        switch (item.getItemId()) {
 431            case R.id.action_settings:
 432                startActivity(new Intent(this, SettingsActivity.class));
 433                break;
 434            case R.id.action_accounts:
 435                AccountUtils.launchManageAccounts(this);
 436                break;
 437            case R.id.action_account:
 438                AccountUtils.launchManageAccount(this);
 439                break;
 440            case android.R.id.home:
 441                finish();
 442                break;
 443            case R.id.action_show_qr_code:
 444                showQrCode();
 445                break;
 446        }
 447        return super.onOptionsItemSelected(item);
 448    }
 449
 450    public void selectPresence(final Conversation conversation, final PresenceSelector.OnPresenceSelected listener) {
 451        final Contact contact = conversation.getContact();
 452        if (contact.showInRoster() || contact.isSelf()) {
 453            final Presences presences = contact.getPresences();
 454            if (presences.size() == 0) {
 455                if (contact.isSelf()) {
 456                    conversation.setNextCounterpart(null);
 457                    listener.onPresenceSelected();
 458                } else if (!contact.getOption(Contact.Options.TO)
 459                        && !contact.getOption(Contact.Options.ASKING)
 460                        && contact.getAccount().getStatus() == Account.State.ONLINE) {
 461                    showAskForPresenceDialog(contact);
 462                } else if (!contact.getOption(Contact.Options.TO)
 463                        || !contact.getOption(Contact.Options.FROM)) {
 464                    PresenceSelector.warnMutualPresenceSubscription(this, conversation, listener);
 465                } else {
 466                    conversation.setNextCounterpart(null);
 467                    listener.onPresenceSelected();
 468                }
 469            } else if (presences.size() == 1) {
 470                final String presence = presences.toResourceArray()[0];
 471                conversation.setNextCounterpart(PresenceSelector.getNextCounterpart(contact, presence));
 472                listener.onPresenceSelected();
 473            } else {
 474                PresenceSelector.showPresenceSelectionDialog(this, conversation, listener);
 475            }
 476        } else {
 477            showAddToRosterDialog(conversation.getContact());
 478        }
 479    }
 480
 481    @SuppressLint("UnsupportedChromeOsCameraSystemFeature")
 482    @Override
 483    protected void onCreate(Bundle savedInstanceState) {
 484        super.onCreate(savedInstanceState);
 485        metrics = getResources().getDisplayMetrics();
 486        ExceptionHelper.init(getApplicationContext());
 487        EmojiInitializationService.execute(this);
 488        this.isCameraFeatureAvailable = getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_ANY);
 489        this.mTheme = findTheme();
 490        setTheme(this.mTheme);
 491        this.mCustomColors = ThemeHelper.applyCustomColors(this);
 492    }
 493
 494    protected boolean isCameraFeatureAvailable() {
 495        return this.isCameraFeatureAvailable;
 496    }
 497
 498    public boolean isDarkTheme() {
 499        return ThemeHelper.isDark(mTheme);
 500    }
 501
 502    public int getThemeResource(int r_attr_name, int r_drawable_def) {
 503        int[] attrs = {r_attr_name};
 504        TypedArray ta = this.getTheme().obtainStyledAttributes(attrs);
 505
 506        int res = ta.getResourceId(0, r_drawable_def);
 507        ta.recycle();
 508
 509        return res;
 510    }
 511
 512    protected boolean isOptimizingBattery() {
 513        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 514            final PowerManager pm = (PowerManager) getSystemService(POWER_SERVICE);
 515            return pm != null
 516                    && !pm.isIgnoringBatteryOptimizations(getPackageName());
 517        } else {
 518            return false;
 519        }
 520    }
 521
 522    protected boolean isAffectedByDataSaver() {
 523        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 524            final ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
 525            return cm != null
 526                    && cm.isActiveNetworkMetered()
 527                    && Compatibility.getRestrictBackgroundStatus(cm) == ConnectivityManager.RESTRICT_BACKGROUND_STATUS_ENABLED;
 528        } else {
 529            return false;
 530        }
 531    }
 532
 533    private boolean usingEnterKey() {
 534        return getBooleanPreference("display_enter_key", R.bool.display_enter_key);
 535    }
 536
 537    private boolean useTor() {
 538        return getBooleanPreference("use_tor", R.bool.use_tor);
 539    }
 540
 541    protected SharedPreferences getPreferences() {
 542        return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
 543    }
 544
 545    protected boolean getBooleanPreference(String name, @BoolRes int res) {
 546        return getPreferences().getBoolean(name, getResources().getBoolean(res));
 547    }
 548
 549    public void startCommand(final Account account, final Jid jid, final String node) {
 550        Intent intent = new Intent(this, ConversationsActivity.class);
 551        intent.setAction(ConversationsActivity.ACTION_VIEW_CONVERSATION);
 552        intent.putExtra(ConversationsActivity.EXTRA_CONVERSATION, xmppConnectionService.findOrCreateConversation(account, jid, false, false).getUuid());
 553        intent.putExtra(ConversationsActivity.EXTRA_POST_INIT_ACTION, "command");
 554        intent.putExtra(ConversationsActivity.EXTRA_NODE, node);
 555        intent.putExtra(ConversationsActivity.EXTRA_JID, (CharSequence) jid);
 556        intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_CLEAR_TOP);
 557        startActivity(intent);
 558    }
 559
 560    public void switchToConversation(Conversation conversation) {
 561        switchToConversation(conversation, null);
 562    }
 563
 564    public void switchToConversationAndQuote(Conversation conversation, String text) {
 565        switchToConversation(conversation, text, true, null, false, false);
 566    }
 567
 568    public void switchToConversation(Conversation conversation, String text) {
 569        switchToConversation(conversation, text, false, null, false, false);
 570    }
 571
 572    public void switchToConversationDoNotAppend(Conversation conversation, String text) {
 573        switchToConversation(conversation, text, false, null, false, true);
 574    }
 575
 576    public void highlightInMuc(Conversation conversation, String nick) {
 577        switchToConversation(conversation, null, false, nick, false, false);
 578    }
 579
 580    public void privateMsgInMuc(Conversation conversation, String nick) {
 581        switchToConversation(conversation, null, false, nick, true, false);
 582    }
 583
 584    public void switchToConversation(Conversation conversation, String text, boolean asQuote, String nick, boolean pm, boolean doNotAppend) {
 585        switchToConversation(conversation, text, asQuote, nick, pm, doNotAppend, null);
 586    }
 587
 588    public void switchToConversation(Conversation conversation, String text, boolean asQuote, String nick, boolean pm, boolean doNotAppend, String postInit) {
 589        if (conversation == null) return;
 590
 591        Intent intent = new Intent(this, ConversationsActivity.class);
 592        intent.setAction(ConversationsActivity.ACTION_VIEW_CONVERSATION);
 593        intent.putExtra(ConversationsActivity.EXTRA_CONVERSATION, conversation.getUuid());
 594        if (text != null) {
 595            intent.putExtra(Intent.EXTRA_TEXT, text);
 596            if (asQuote) {
 597                intent.putExtra(ConversationsActivity.EXTRA_AS_QUOTE, true);
 598            }
 599        }
 600        if (nick != null) {
 601            intent.putExtra(ConversationsActivity.EXTRA_NICK, nick);
 602            intent.putExtra(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, pm);
 603        }
 604        if (doNotAppend) {
 605            intent.putExtra(ConversationsActivity.EXTRA_DO_NOT_APPEND, true);
 606        }
 607        intent.putExtra(ConversationsActivity.EXTRA_POST_INIT_ACTION, postInit);
 608        intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_CLEAR_TOP);
 609        startActivity(intent);
 610        finish();
 611    }
 612
 613    public void switchToContactDetails(Contact contact) {
 614        switchToContactDetails(contact, null);
 615    }
 616
 617    public void switchToContactDetails(Contact contact, String messageFingerprint) {
 618        Intent intent = new Intent(this, ContactDetailsActivity.class);
 619        intent.setAction(ContactDetailsActivity.ACTION_VIEW_CONTACT);
 620        intent.putExtra(EXTRA_ACCOUNT, contact.getAccount().getJid().asBareJid().toEscapedString());
 621        intent.putExtra("contact", contact.getJid().toEscapedString());
 622        intent.putExtra("fingerprint", messageFingerprint);
 623        startActivity(intent);
 624    }
 625
 626    public void switchToAccount(Account account, String fingerprint) {
 627        switchToAccount(account, false, fingerprint);
 628    }
 629
 630    public void switchToAccount(Account account) {
 631        switchToAccount(account, false, null);
 632    }
 633
 634    public void switchToAccount(Account account, boolean init, String fingerprint) {
 635        Intent intent = new Intent(this, EditAccountActivity.class);
 636        intent.putExtra("jid", account.getJid().asBareJid().toEscapedString());
 637        intent.putExtra("init", init);
 638        if (init) {
 639            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NO_ANIMATION);
 640        }
 641        if (fingerprint != null) {
 642            intent.putExtra("fingerprint", fingerprint);
 643        }
 644        startActivity(intent);
 645        if (init) {
 646            overridePendingTransition(0, 0);
 647        }
 648    }
 649
 650    protected void delegateUriPermissionsToService(Uri uri) {
 651        Intent intent = new Intent(this, XmppConnectionService.class);
 652        intent.setAction(Intent.ACTION_SEND);
 653        intent.setData(uri);
 654        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
 655        try {
 656            startService(intent);
 657        } catch (Exception e) {
 658            Log.e(Config.LOGTAG, "unable to delegate uri permission", e);
 659        }
 660    }
 661
 662    protected void inviteToConversation(Conversation conversation) {
 663        startActivityForResult(ChooseContactActivity.create(this, conversation), REQUEST_INVITE_TO_CONVERSATION);
 664    }
 665
 666    protected void announcePgp(final Account account, final Conversation conversation, Intent intent, final Runnable onSuccess) {
 667        if (account.getPgpId() == 0) {
 668            choosePgpSignId(account);
 669        } else {
 670            final String status = Strings.nullToEmpty(account.getPresenceStatusMessage());
 671            xmppConnectionService.getPgpEngine().generateSignature(intent, account, status, new UiCallback<String>() {
 672
 673                @Override
 674                public void userInputRequired(PendingIntent pi, String signature) {
 675                    try {
 676                        startIntentSenderForResult(pi.getIntentSender(), REQUEST_ANNOUNCE_PGP, null, 0, 0, 0);
 677                    } catch (final SendIntentException ignored) {
 678                    }
 679                }
 680
 681                @Override
 682                public void success(String signature) {
 683                    account.setPgpSignature(signature);
 684                    xmppConnectionService.databaseBackend.updateAccount(account);
 685                    xmppConnectionService.sendPresence(account);
 686                    if (conversation != null) {
 687                        conversation.setNextEncryption(Message.ENCRYPTION_PGP);
 688                        xmppConnectionService.updateConversation(conversation);
 689                        refreshUi();
 690                    }
 691                    if (onSuccess != null) {
 692                        runOnUiThread(onSuccess);
 693                    }
 694                }
 695
 696                @Override
 697                public void error(int error, String signature) {
 698                    if (error == 0) {
 699                        account.setPgpSignId(0);
 700                        account.unsetPgpSignature();
 701                        xmppConnectionService.databaseBackend.updateAccount(account);
 702                        choosePgpSignId(account);
 703                    } else {
 704                        displayErrorDialog(error);
 705                    }
 706                }
 707            });
 708        }
 709    }
 710
 711    @SuppressWarnings("deprecation")
 712    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
 713    protected void setListItemBackgroundOnView(View view) {
 714        int sdk = android.os.Build.VERSION.SDK_INT;
 715        if (sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
 716            view.setBackgroundDrawable(getResources().getDrawable(R.drawable.greybackground));
 717        } else {
 718            view.setBackground(getResources().getDrawable(R.drawable.greybackground));
 719        }
 720    }
 721
 722    protected void choosePgpSignId(Account account) {
 723        xmppConnectionService.getPgpEngine().chooseKey(account, new UiCallback<Account>() {
 724            @Override
 725            public void success(Account account1) {
 726            }
 727
 728            @Override
 729            public void error(int errorCode, Account object) {
 730
 731            }
 732
 733            @Override
 734            public void userInputRequired(PendingIntent pi, Account object) {
 735                try {
 736                    startIntentSenderForResult(pi.getIntentSender(),
 737                            REQUEST_CHOOSE_PGP_ID, null, 0, 0, 0);
 738                } catch (final SendIntentException ignored) {
 739                }
 740            }
 741        });
 742    }
 743
 744    protected void displayErrorDialog(final int errorCode) {
 745        runOnUiThread(() -> {
 746            Builder builder = new Builder(XmppActivity.this);
 747            builder.setIconAttribute(android.R.attr.alertDialogIcon);
 748            builder.setTitle(getString(R.string.error));
 749            builder.setMessage(errorCode);
 750            builder.setNeutralButton(R.string.accept, null);
 751            builder.create().show();
 752        });
 753
 754    }
 755
 756    protected void showAddToRosterDialog(final Contact contact) {
 757        AlertDialog.Builder builder = new AlertDialog.Builder(this);
 758        builder.setTitle(contact.getJid().toString());
 759        builder.setMessage(getString(R.string.not_in_roster));
 760        builder.setNegativeButton(getString(R.string.cancel), null);
 761        builder.setPositiveButton(getString(R.string.add_contact), (dialog, which) -> {
 762            contact.copySystemTagsToGroups();
 763            xmppConnectionService.createContact(contact, true);
 764        });
 765        builder.create().show();
 766    }
 767
 768    private void showAskForPresenceDialog(final Contact contact) {
 769        AlertDialog.Builder builder = new AlertDialog.Builder(this);
 770        builder.setTitle(contact.getJid().toString());
 771        builder.setMessage(R.string.request_presence_updates);
 772        builder.setNegativeButton(R.string.cancel, null);
 773        builder.setPositiveButton(R.string.request_now,
 774                (dialog, which) -> {
 775                    if (xmppConnectionServiceBound) {
 776                        xmppConnectionService.sendPresencePacket(contact
 777                                .getAccount(), xmppConnectionService
 778                                .getPresenceGenerator()
 779                                .requestPresenceUpdatesFrom(contact));
 780                    }
 781                });
 782        builder.create().show();
 783    }
 784
 785    protected void quickEdit(String previousValue, @StringRes int hint, OnValueEdited callback) {
 786        quickEdit(previousValue, callback, hint, false, false);
 787    }
 788
 789    protected void quickEdit(String previousValue, @StringRes int hint, OnValueEdited callback, boolean permitEmpty) {
 790        quickEdit(previousValue, callback, hint, false, permitEmpty);
 791    }
 792
 793    protected void quickPasswordEdit(String previousValue, OnValueEdited callback) {
 794        quickEdit(previousValue, callback, R.string.password, true, false);
 795    }
 796
 797    protected void quickEdit(final String previousValue, final OnValueEdited callback, final @StringRes int hint, boolean password, boolean permitEmpty) {
 798        quickEdit(previousValue, callback, hint, password, permitEmpty, false);
 799    }
 800
 801    @SuppressLint("InflateParams")
 802    protected void quickEdit(final String previousValue,
 803                           final OnValueEdited callback,
 804                           final @StringRes int hint,
 805                           boolean password,
 806                           boolean permitEmpty,
 807                           boolean alwaysCallback) {
 808        AlertDialog.Builder builder = new AlertDialog.Builder(this);
 809        DialogQuickeditBinding binding = DataBindingUtil.inflate(getLayoutInflater(), R.layout.dialog_quickedit, null, false);
 810        if (password) {
 811            binding.inputEditText.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
 812        }
 813        builder.setPositiveButton(R.string.accept, null);
 814        if (hint != 0) {
 815            binding.inputLayout.setHint(getString(hint));
 816        }
 817        binding.inputEditText.requestFocus();
 818        if (previousValue != null) {
 819            binding.inputEditText.getText().append(previousValue);
 820        }
 821        builder.setView(binding.getRoot());
 822        builder.setNegativeButton(R.string.cancel, null);
 823        final AlertDialog dialog = builder.create();
 824        dialog.setOnShowListener(d -> SoftKeyboardUtils.showKeyboard(binding.inputEditText));
 825        dialog.show();
 826        View.OnClickListener clickListener = v -> {
 827            String value = binding.inputEditText.getText().toString();
 828            if ((alwaysCallback || !value.equals(previousValue)) && (!value.trim().isEmpty() || permitEmpty)) {
 829                String error = callback.onValueEdited(value);
 830                if (error != null) {
 831                    binding.inputLayout.setError(error);
 832                    return;
 833                }
 834            }
 835            SoftKeyboardUtils.hideSoftKeyboard(binding.inputEditText);
 836            dialog.dismiss();
 837        };
 838        dialog.getButton(DialogInterface.BUTTON_POSITIVE).setOnClickListener(clickListener);
 839        dialog.getButton(DialogInterface.BUTTON_NEGATIVE).setOnClickListener((v -> {
 840            SoftKeyboardUtils.hideSoftKeyboard(binding.inputEditText);
 841            dialog.dismiss();
 842        }));
 843        dialog.setCanceledOnTouchOutside(false);
 844        dialog.setOnDismissListener(dialog1 -> {
 845            SoftKeyboardUtils.hideSoftKeyboard(binding.inputEditText);
 846        });
 847    }
 848
 849    protected boolean hasStoragePermission(int requestCode) {
 850        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
 851            if (checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 852                requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
 853                return false;
 854            } else {
 855                return true;
 856            }
 857        } else {
 858            return true;
 859        }
 860    }
 861
 862    public synchronized void startActivityWithCallback(Intent intent, ValueCallback<Uri[]> cb) {
 863        Pair<Integer, ValueCallback<Uri[]>> peek = activityCallbacks.peek();
 864        int index = peek == null ? 1 : peek.first + 1;
 865        activityCallbacks.add(new Pair<>(index, cb));
 866        startActivityForResult(intent, index);
 867    }
 868
 869    protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
 870        super.onActivityResult(requestCode, resultCode, data);
 871        if (requestCode == REQUEST_INVITE_TO_CONVERSATION && resultCode == RESULT_OK) {
 872            mPendingConferenceInvite = ConferenceInvite.parse(data);
 873            if (xmppConnectionServiceBound && mPendingConferenceInvite != null) {
 874                if (mPendingConferenceInvite.execute(this)) {
 875                    mToast = Toast.makeText(this, R.string.creating_conference, Toast.LENGTH_LONG);
 876                    mToast.show();
 877                }
 878                mPendingConferenceInvite = null;
 879            }
 880        } else if (resultCode == RESULT_OK) {
 881            for (Pair<Integer, ValueCallback<Uri[]>> cb : new ArrayList<>(activityCallbacks)) {
 882                if (cb.first == requestCode) {
 883                    activityCallbacks.remove(cb);
 884                    ArrayList<Uri> dataUris = new ArrayList<>();
 885                    if (data.getDataString() != null) {
 886                        dataUris.add(Uri.parse(data.getDataString()));
 887                    } else if (data.getClipData() != null) {
 888                        for (int i = 0; i < data.getClipData().getItemCount(); i++) {
 889                            dataUris.add(data.getClipData().getItemAt(i).getUri());
 890                        }
 891                    }
 892                    cb.second.onReceiveValue(dataUris.toArray(new Uri[0]));
 893                }
 894            }
 895        }
 896    }
 897
 898    public boolean copyTextToClipboard(String text, int labelResId) {
 899        ClipboardManager mClipBoardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
 900        String label = getResources().getString(labelResId);
 901        if (mClipBoardManager != null) {
 902            ClipData mClipData = ClipData.newPlainText(label, text);
 903            mClipBoardManager.setPrimaryClip(mClipData);
 904            return true;
 905        }
 906        return false;
 907    }
 908
 909    protected boolean manuallyChangePresence() {
 910        return getBooleanPreference(SettingsActivity.MANUALLY_CHANGE_PRESENCE, R.bool.manually_change_presence);
 911    }
 912
 913    protected String getShareableUri() {
 914        return getShareableUri(false);
 915    }
 916
 917    protected String getShareableUri(boolean http) {
 918        return null;
 919    }
 920
 921    protected void shareLink(boolean http) {
 922        String uri = getShareableUri(http);
 923        if (uri == null || uri.isEmpty()) {
 924            return;
 925        }
 926        Intent intent = new Intent(Intent.ACTION_SEND);
 927        intent.setType("text/plain");
 928        intent.putExtra(Intent.EXTRA_TEXT, getShareableUri(http));
 929        try {
 930            startActivity(Intent.createChooser(intent, getText(R.string.share_uri_with)));
 931        } catch (ActivityNotFoundException e) {
 932            Toast.makeText(this, R.string.no_application_to_share_uri, Toast.LENGTH_SHORT).show();
 933        }
 934    }
 935
 936    protected void launchOpenKeyChain(long keyId) {
 937        PgpEngine pgp = XmppActivity.this.xmppConnectionService.getPgpEngine();
 938        try {
 939            startIntentSenderForResult(
 940                    pgp.getIntentForKey(keyId).getIntentSender(), 0, null, 0,
 941                    0, 0);
 942        } catch (Throwable e) {
 943            Toast.makeText(XmppActivity.this, R.string.openpgp_error, Toast.LENGTH_SHORT).show();
 944        }
 945    }
 946
 947    @Override
 948    protected void onResume(){
 949        super.onResume();
 950        SettingsUtils.applyScreenshotPreventionSetting(this);
 951    }
 952
 953    protected int findTheme() {
 954        return ThemeHelper.find(this);
 955    }
 956
 957    @Override
 958    public void onPause() {
 959        super.onPause();
 960    }
 961
 962    @Override
 963    public boolean onMenuOpened(int id, Menu menu) {
 964        if (id == AppCompatDelegate.FEATURE_SUPPORT_ACTION_BAR && menu != null) {
 965            MenuDoubleTabUtil.recordMenuOpen();
 966        }
 967        return super.onMenuOpened(id, menu);
 968    }
 969
 970    protected void showQrCode() {
 971        showQrCode(getShareableUri());
 972    }
 973
 974    protected void showQrCode(final String uri) {
 975        if (uri == null || uri.isEmpty()) {
 976            return;
 977        }
 978        Point size = new Point();
 979        getWindowManager().getDefaultDisplay().getSize(size);
 980        final int width = (size.x < size.y ? size.x : size.y);
 981        Bitmap bitmap = BarcodeProvider.create2dBarcodeBitmap(uri, width);
 982        ImageView view = new ImageView(this);
 983        view.setBackgroundColor(Color.WHITE);
 984        view.setImageBitmap(bitmap);
 985        AlertDialog.Builder builder = new AlertDialog.Builder(this);
 986        builder.setView(view);
 987        builder.create().show();
 988    }
 989
 990    protected Account extractAccount(Intent intent) {
 991        final String jid = intent != null ? intent.getStringExtra(EXTRA_ACCOUNT) : null;
 992        try {
 993            return jid != null ? xmppConnectionService.findAccountByJid(Jid.ofEscaped(jid)) : null;
 994        } catch (IllegalArgumentException e) {
 995            return null;
 996        }
 997    }
 998
 999    public AvatarService avatarService() {
1000        return xmppConnectionService.getAvatarService();
1001    }
1002
1003    public void loadBitmap(Message message, ImageView imageView) {
1004        Drawable bm;
1005        try {
1006            bm = xmppConnectionService.getFileBackend().getThumbnail(message, getResources(), (int) (metrics.density * 288), true);
1007        } catch (IOException e) {
1008            bm = null;
1009        }
1010        if (bm != null) {
1011            cancelPotentialWork(message, imageView);
1012            imageView.setImageDrawable(bm);
1013            imageView.setBackgroundColor(0x00000000);
1014            if (Build.VERSION.SDK_INT >= 28 && bm instanceof AnimatedImageDrawable) {
1015                ((AnimatedImageDrawable) bm).start();
1016            }
1017        } else {
1018            if (cancelPotentialWork(message, imageView)) {
1019                final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
1020                final BitmapDrawable fallbackThumb = xmppConnectionService.getFileBackend().getFallbackThumbnail(message, (int) (metrics.density * 288), true);
1021                imageView.setBackgroundColor(fallbackThumb == null ? 0xff333333 : 0x00000000);
1022                final AsyncDrawable asyncDrawable = new AsyncDrawable(
1023                        getResources(), fallbackThumb != null ? fallbackThumb.getBitmap() : null, task);
1024                imageView.setImageDrawable(asyncDrawable);
1025                try {
1026                    task.execute(message);
1027                } catch (final RejectedExecutionException ignored) {
1028                    ignored.printStackTrace();
1029                }
1030            }
1031        }
1032    }
1033
1034    protected interface OnValueEdited {
1035        String onValueEdited(String value);
1036    }
1037
1038    public static class ConferenceInvite {
1039        private String uuid;
1040        private final List<Jid> jids = new ArrayList<>();
1041
1042        public static ConferenceInvite parse(Intent data) {
1043            ConferenceInvite invite = new ConferenceInvite();
1044            invite.uuid = data.getStringExtra(ChooseContactActivity.EXTRA_CONVERSATION);
1045            if (invite.uuid == null) {
1046                return null;
1047            }
1048            invite.jids.addAll(ChooseContactActivity.extractJabberIds(data));
1049            return invite;
1050        }
1051
1052        public boolean execute(XmppActivity activity) {
1053            XmppConnectionService service = activity.xmppConnectionService;
1054            Conversation conversation = service.findConversationByUuid(this.uuid);
1055            if (conversation == null) {
1056                return false;
1057            }
1058            if (conversation.getMode() == Conversation.MODE_MULTI) {
1059                for (Jid jid : jids) {
1060                    service.invite(conversation, jid);
1061                }
1062                return false;
1063            } else {
1064                jids.add(conversation.getJid().asBareJid());
1065                return service.createAdhocConference(conversation.getAccount(), null, jids, activity.adhocCallback);
1066            }
1067        }
1068    }
1069
1070    static class BitmapWorkerTask extends AsyncTask<Message, Void, Drawable> {
1071        private final WeakReference<ImageView> imageViewReference;
1072        private Message message = null;
1073
1074        private BitmapWorkerTask(ImageView imageView) {
1075            this.imageViewReference = new WeakReference<>(imageView);
1076        }
1077
1078        @Override
1079        protected Drawable doInBackground(Message... params) {
1080            if (isCancelled()) {
1081                return null;
1082            }
1083            final XmppActivity activity = find(imageViewReference);
1084            Drawable d = null;
1085            message = params[0];
1086            try {
1087                if (activity != null && activity.xmppConnectionService != null) {
1088                    d = activity.xmppConnectionService.getFileBackend().getThumbnail(message, imageViewReference.get().getContext().getResources(), (int) (activity.metrics.density * 288), false);
1089                }
1090            } catch (IOException e) { e.printStackTrace(); }
1091            final ImageView imageView = imageViewReference.get();
1092            if (d == null && activity != null && activity.xmppConnectionService != null && imageView != null && imageView.getDrawable() instanceof AsyncDrawable && ((AsyncDrawable) imageView.getDrawable()).getBitmap() == null) {
1093                d = activity.xmppConnectionService.getFileBackend().getFallbackThumbnail(message, (int) (activity.metrics.density * 288), false);
1094            }
1095            return d;
1096        }
1097
1098        @Override
1099        protected void onPostExecute(final Drawable drawable) {
1100            if (!isCancelled()) {
1101                final ImageView imageView = imageViewReference.get();
1102                if (imageView != null) {
1103                    Drawable old = imageView.getDrawable();
1104                    if (old instanceof AsyncDrawable) {
1105                        ((AsyncDrawable) old).clearTask();
1106                    }
1107                    if (drawable != null) {
1108                        imageView.setImageDrawable(drawable);
1109                    }
1110                    imageView.setBackgroundColor(drawable == null ? 0xff333333 : 0x00000000);
1111                    if (Build.VERSION.SDK_INT >= 28 && drawable instanceof AnimatedImageDrawable) {
1112                        ((AnimatedImageDrawable) drawable).start();
1113                    }
1114                }
1115            }
1116        }
1117    }
1118
1119    private static class AsyncDrawable extends BitmapDrawable {
1120        private WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1121
1122        private AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
1123            super(res, bitmap);
1124            bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
1125        }
1126
1127        private synchronized BitmapWorkerTask getBitmapWorkerTask() {
1128            if (bitmapWorkerTaskReference == null) return null;
1129
1130            return bitmapWorkerTaskReference.get();
1131        }
1132
1133        public synchronized void clearTask() {
1134            bitmapWorkerTaskReference = null;
1135        }
1136    }
1137
1138    public static XmppActivity find(@NonNull WeakReference<ImageView> viewWeakReference) {
1139        final View view = viewWeakReference.get();
1140        return view == null ? null : find(view);
1141    }
1142
1143    public static XmppActivity find(@NonNull final View view) {
1144        Context context = view.getContext();
1145        while (context instanceof ContextWrapper) {
1146            if (context instanceof XmppActivity) {
1147                return (XmppActivity) context;
1148            }
1149            context = ((ContextWrapper) context).getBaseContext();
1150        }
1151        return null;
1152    }
1153}