package eu.siacs.conversations.ui; import android.annotation.SuppressLint; import android.annotation.TargetApi; import android.app.ActionBar; import android.app.Activity; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.app.PendingIntent; import android.content.ClipData; import android.content.ClipboardManager; import android.content.ComponentName; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnClickListener; import android.content.Intent; import android.content.IntentSender.SendIntentException; import android.content.ServiceConnection; import android.content.SharedPreferences; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.Color; import android.graphics.Point; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.net.Uri; import android.nfc.NdefMessage; import android.nfc.NdefRecord; import android.nfc.NfcAdapter; import android.nfc.NfcEvent; import android.os.AsyncTask; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.os.IBinder; import android.os.SystemClock; import android.preference.PreferenceManager; import android.text.InputType; import android.util.DisplayMetrics; import android.util.Log; import android.view.MenuItem; import android.view.View; import android.view.inputmethod.InputMethodManager; import android.widget.EditText; import android.widget.ImageView; import android.widget.Toast; import com.google.zxing.BarcodeFormat; import com.google.zxing.EncodeHintType; import com.google.zxing.WriterException; import com.google.zxing.common.BitMatrix; import com.google.zxing.qrcode.QRCodeWriter; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; import net.java.otr4j.session.SessionID; import java.io.FileNotFoundException; import java.lang.ref.WeakReference; import java.util.ArrayList; import java.util.Hashtable; import java.util.List; import java.util.concurrent.RejectedExecutionException; import de.tzur.conversations.Settings; import eu.siacs.conversations.Config; import eu.siacs.conversations.R; import eu.siacs.conversations.entities.Account; import eu.siacs.conversations.entities.Contact; import eu.siacs.conversations.entities.Conversation; import eu.siacs.conversations.entities.Message; import eu.siacs.conversations.entities.MucOptions; import eu.siacs.conversations.entities.Presences; import eu.siacs.conversations.services.AvatarService; import eu.siacs.conversations.services.XmppConnectionService; import eu.siacs.conversations.services.XmppConnectionService.XmppConnectionBinder; import eu.siacs.conversations.utils.ExceptionHelper; import eu.siacs.conversations.xmpp.OnUpdateBlocklist; import eu.siacs.conversations.xmpp.jid.InvalidJidException; import eu.siacs.conversations.xmpp.jid.Jid; public abstract class XmppActivity extends Activity { protected static final int REQUEST_ANNOUNCE_PGP = 0x0101; protected static final int REQUEST_INVITE_TO_CONVERSATION = 0x0102; public XmppConnectionService xmppConnectionService; public boolean xmppConnectionServiceBound = false; protected boolean registeredListeners = false; protected int mPrimaryTextColor; protected int mSecondaryTextColor; protected int mPrimaryBackgroundColor; protected int mSecondaryBackgroundColor; protected int mColorRed; protected int mColorOrange; protected int mColorGreen; protected int mPrimaryColor; protected boolean mUseSubject = true; private DisplayMetrics metrics; protected int mTheme; protected boolean mUsingEnterKey = false; private long mLastUiRefresh = 0; private Handler mRefreshUiHandler = new Handler(); private Runnable mRefreshUiRunnable = new Runnable() { @Override public void run() { mLastUiRefresh = SystemClock.elapsedRealtime(); refreshUiReal(); } }; protected ConferenceInvite mPendingConferenceInvite = null; protected void refreshUi() { final long diff = SystemClock.elapsedRealtime() - mLastUiRefresh; if (diff > Config.REFRESH_UI_INTERVAL) { mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable); runOnUiThread(mRefreshUiRunnable); } else { final long next = Config.REFRESH_UI_INTERVAL - diff; mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable); mRefreshUiHandler.postDelayed(mRefreshUiRunnable,next); } } protected void refreshUiReal() { }; protected interface OnValueEdited { public void onValueEdited(String value); } public interface OnPresenceSelected { public void onPresenceSelected(); } protected ServiceConnection mConnection = new ServiceConnection() { @Override public void onServiceConnected(ComponentName className, IBinder service) { XmppConnectionBinder binder = (XmppConnectionBinder) service; xmppConnectionService = binder.getService(); xmppConnectionServiceBound = true; if (!registeredListeners && shouldRegisterListeners()) { registerListeners(); registeredListeners = true; } onBackendConnected(); } @Override public void onServiceDisconnected(ComponentName arg0) { xmppConnectionServiceBound = false; } }; @Override protected void onStart() { super.onStart(); if (!xmppConnectionServiceBound) { connectToBackend(); } else { if (!registeredListeners) { this.registerListeners(); this.registeredListeners = true; } this.onBackendConnected(); } } @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1) protected boolean shouldRegisterListeners() { if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) { return !isDestroyed() && !isFinishing(); } else { return !isFinishing(); } } public void connectToBackend() { Intent intent = new Intent(this, XmppConnectionService.class); intent.setAction("ui"); startService(intent); bindService(intent, mConnection, Context.BIND_AUTO_CREATE); } @Override protected void onStop() { super.onStop(); if (xmppConnectionServiceBound) { if (registeredListeners) { this.unregisterListeners(); this.registeredListeners = false; } unbindService(mConnection); xmppConnectionServiceBound = false; } } protected void hideKeyboard() { InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); View focus = getCurrentFocus(); if (focus != null) { inputManager.hideSoftInputFromWindow(focus.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS); } } public boolean hasPgp() { return xmppConnectionService.getPgpEngine() != null; } public void showInstallPgpDialog() { Builder builder = new AlertDialog.Builder(this); builder.setTitle(getString(R.string.openkeychain_required)); builder.setIconAttribute(android.R.attr.alertDialogIcon); builder.setMessage(getText(R.string.openkeychain_required_long)); builder.setNegativeButton(getString(R.string.cancel), null); builder.setNeutralButton(getString(R.string.restart), new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { if (xmppConnectionServiceBound) { unbindService(mConnection); xmppConnectionServiceBound = false; } stopService(new Intent(XmppActivity.this, XmppConnectionService.class)); finish(); } }); builder.setPositiveButton(getString(R.string.install), new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Uri uri = Uri .parse("market://details?id=org.sufficientlysecure.keychain"); Intent marketIntent = new Intent(Intent.ACTION_VIEW, uri); PackageManager manager = getApplicationContext() .getPackageManager(); List infos = manager .queryIntentActivities(marketIntent, 0); if (infos.size() > 0) { startActivity(marketIntent); } else { uri = Uri.parse("http://www.openkeychain.org/"); Intent browserIntent = new Intent( Intent.ACTION_VIEW, uri); startActivity(browserIntent); } finish(); } }); builder.create().show(); } abstract void onBackendConnected(); protected void registerListeners() { if (this instanceof XmppConnectionService.OnConversationUpdate) { this.xmppConnectionService.setOnConversationListChangedListener((XmppConnectionService.OnConversationUpdate) this); } if (this instanceof XmppConnectionService.OnAccountUpdate) { this.xmppConnectionService.setOnAccountListChangedListener((XmppConnectionService.OnAccountUpdate) this); } if (this instanceof XmppConnectionService.OnRosterUpdate) { this.xmppConnectionService.setOnRosterUpdateListener((XmppConnectionService.OnRosterUpdate) this); } if (this instanceof XmppConnectionService.OnMucRosterUpdate) { this.xmppConnectionService.setOnMucRosterUpdateListener((XmppConnectionService.OnMucRosterUpdate) this); } if (this instanceof OnUpdateBlocklist) { this.xmppConnectionService.setOnUpdateBlocklistListener((OnUpdateBlocklist) this); } if (this instanceof XmppConnectionService.OnShowErrorToast) { this.xmppConnectionService.setOnShowErrorToastListener((XmppConnectionService.OnShowErrorToast) this); } } protected void unregisterListeners() { if (this instanceof XmppConnectionService.OnConversationUpdate) { this.xmppConnectionService.removeOnConversationListChangedListener(); } if (this instanceof XmppConnectionService.OnAccountUpdate) { this.xmppConnectionService.removeOnAccountListChangedListener(); } if (this instanceof XmppConnectionService.OnRosterUpdate) { this.xmppConnectionService.removeOnRosterUpdateListener(); } if (this instanceof XmppConnectionService.OnMucRosterUpdate) { this.xmppConnectionService.removeOnMucRosterUpdateListener(); } if (this instanceof OnUpdateBlocklist) { this.xmppConnectionService.removeOnUpdateBlocklistListener(); } if (this instanceof XmppConnectionService.OnShowErrorToast) { this.xmppConnectionService.removeOnShowErrorToastListener(); } } @Override public boolean onOptionsItemSelected(final MenuItem item) { switch (item.getItemId()) { case R.id.action_settings: startActivity(new Intent(this, SettingsActivity.class)); break; case R.id.action_accounts: startActivity(new Intent(this, ManageAccountActivity.class)); break; case android.R.id.home: finish(); break; case R.id.action_show_qr_code: showQrCode(); break; } return super.onOptionsItemSelected(item); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); metrics = getResources().getDisplayMetrics(); ExceptionHelper.init(getApplicationContext()); mPrimaryTextColor = getResources().getColor(R.color.black87); mSecondaryTextColor = getResources().getColor(R.color.black54); mColorRed = getResources().getColor(R.color.red500); mColorOrange = getResources().getColor(R.color.orange500); mColorGreen = getResources().getColor(R.color.green500); mPrimaryColor = getResources().getColor(R.color.green500); mPrimaryBackgroundColor = getResources().getColor(R.color.grey50); mSecondaryBackgroundColor = getResources().getColor(R.color.grey200); this.mTheme = findTheme(); setTheme(this.mTheme); this.mUsingEnterKey = usingEnterKey(); mUseSubject = getPreferences().getBoolean("use_subject", true); Settings.initSettingsClassWithPreferences(getPreferences()); final ActionBar ab = getActionBar(); if (ab!=null) { ab.setDisplayHomeAsUpEnabled(true); } } protected boolean usingEnterKey() { return getPreferences().getBoolean("display_enter_key", false); } protected SharedPreferences getPreferences() { return PreferenceManager .getDefaultSharedPreferences(getApplicationContext()); } public boolean useSubjectToIdentifyConference() { return mUseSubject; } public void switchToConversation(Conversation conversation) { switchToConversation(conversation, null, false); } public void switchToConversation(Conversation conversation, String text, boolean newTask) { switchToConversation(conversation,text,null,newTask); } public void highlightInMuc(Conversation conversation, String nick) { switchToConversation(conversation, null, nick, false); } private void switchToConversation(Conversation conversation, String text, String nick, boolean newTask) { Intent viewConversationIntent = new Intent(this, ConversationActivity.class); viewConversationIntent.setAction(Intent.ACTION_VIEW); viewConversationIntent.putExtra(ConversationActivity.CONVERSATION, conversation.getUuid()); if (text != null) { viewConversationIntent.putExtra(ConversationActivity.TEXT, text); } if (nick != null) { viewConversationIntent.putExtra(ConversationActivity.NICK, nick); } viewConversationIntent.setType(ConversationActivity.VIEW_CONVERSATION); if (newTask) { viewConversationIntent.setFlags(viewConversationIntent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP); } else { viewConversationIntent.setFlags(viewConversationIntent.getFlags() | Intent.FLAG_ACTIVITY_CLEAR_TOP); } startActivity(viewConversationIntent); finish(); } public void switchToContactDetails(Contact contact) { Intent intent = new Intent(this, ContactDetailsActivity.class); intent.setAction(ContactDetailsActivity.ACTION_VIEW_CONTACT); intent.putExtra("account", contact.getAccount().getJid().toBareJid().toString()); intent.putExtra("contact", contact.getJid().toString()); startActivity(intent); } public void switchToAccount(Account account) { Intent intent = new Intent(this, EditAccountActivity.class); intent.putExtra("jid", account.getJid().toBareJid().toString()); startActivity(intent); } protected void inviteToConversation(Conversation conversation) { Intent intent = new Intent(getApplicationContext(), ChooseContactActivity.class); List contacts = new ArrayList<>(); if (conversation.getMode() == Conversation.MODE_MULTI) { for (MucOptions.User user : conversation.getMucOptions().getUsers()) { Jid jid = user.getJid(); if (jid != null) { contacts.add(jid.toBareJid().toString()); } } } else { contacts.add(conversation.getJid().toBareJid().toString()); } intent.putExtra("filter_contacts", contacts.toArray(new String[contacts.size()])); intent.putExtra("conversation", conversation.getUuid()); intent.putExtra("multiple", true); startActivityForResult(intent, REQUEST_INVITE_TO_CONVERSATION); } protected void announcePgp(Account account, final Conversation conversation) { xmppConnectionService.getPgpEngine().generateSignature(account, "online", new UiCallback() { @Override public void userInputRequried(PendingIntent pi, Account account) { try { startIntentSenderForResult(pi.getIntentSender(), REQUEST_ANNOUNCE_PGP, null, 0, 0, 0); } catch (final SendIntentException ignored) { } } @Override public void success(Account account) { xmppConnectionService.databaseBackend.updateAccount(account); xmppConnectionService.sendPresence(account); if (conversation != null) { conversation.setNextEncryption(Message.ENCRYPTION_PGP); xmppConnectionService.databaseBackend.updateConversation(conversation); } } @Override public void error(int error, Account account) { displayErrorDialog(error); } }); } protected void displayErrorDialog(final int errorCode) { runOnUiThread(new Runnable() { @Override public void run() { AlertDialog.Builder builder = new AlertDialog.Builder( XmppActivity.this); builder.setIconAttribute(android.R.attr.alertDialogIcon); builder.setTitle(getString(R.string.error)); builder.setMessage(errorCode); builder.setNeutralButton(R.string.accept, null); builder.create().show(); } }); } protected void showAddToRosterDialog(final Conversation conversation) { showAddToRosterDialog(conversation.getContact()); } protected void showAddToRosterDialog(final Contact contact) { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle(contact.getJid().toString()); builder.setMessage(getString(R.string.not_in_roster)); builder.setNegativeButton(getString(R.string.cancel), null); builder.setPositiveButton(getString(R.string.add_contact), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { final Jid jid = contact.getJid(); Account account = contact.getAccount(); Contact contact = account.getRoster().getContact(jid); xmppConnectionService.createContact(contact); } }); builder.create().show(); } private void showAskForPresenceDialog(final Contact contact) { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle(contact.getJid().toString()); builder.setMessage(R.string.request_presence_updates); builder.setNegativeButton(R.string.cancel, null); builder.setPositiveButton(R.string.request_now, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { if (xmppConnectionServiceBound) { xmppConnectionService.sendPresencePacket(contact .getAccount(), xmppConnectionService .getPresenceGenerator() .requestPresenceUpdatesFrom(contact)); } } }); builder.create().show(); } private void warnMutalPresenceSubscription(final Conversation conversation, final OnPresenceSelected listener) { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle(conversation.getContact().getJid().toString()); builder.setMessage(R.string.without_mutual_presence_updates); builder.setNegativeButton(R.string.cancel, null); builder.setPositiveButton(R.string.ignore, new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { conversation.setNextCounterpart(null); if (listener != null) { listener.onPresenceSelected(); } } }); builder.create().show(); } protected void quickEdit(String previousValue, OnValueEdited callback) { quickEdit(previousValue, callback, false); } protected void quickPasswordEdit(String previousValue, OnValueEdited callback) { quickEdit(previousValue, callback, true); } @SuppressLint("InflateParams") private void quickEdit(final String previousValue, final OnValueEdited callback, boolean password) { AlertDialog.Builder builder = new AlertDialog.Builder(this); View view = getLayoutInflater().inflate(R.layout.quickedit, null); final EditText editor = (EditText) view.findViewById(R.id.editor); OnClickListener mClickListener = new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { String value = editor.getText().toString(); if (!previousValue.equals(value) && value.trim().length() > 0) { callback.onValueEdited(value); } } }; if (password) { editor.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD); editor.setHint(R.string.password); builder.setPositiveButton(R.string.accept, mClickListener); } else { builder.setPositiveButton(R.string.edit, mClickListener); } editor.requestFocus(); editor.setText(previousValue); builder.setView(view); builder.setNegativeButton(R.string.cancel, null); builder.create().show(); } public void selectPresence(final Conversation conversation, final OnPresenceSelected listener) { final Contact contact = conversation.getContact(); if (conversation.hasValidOtrSession()) { SessionID id = conversation.getOtrSession().getSessionID(); Jid jid; try { jid = Jid.fromString(id.getAccountID() + "/" + id.getUserID()); } catch (InvalidJidException e) { jid = null; } conversation.setNextCounterpart(jid); listener.onPresenceSelected(); } else if (!contact.showInRoster()) { showAddToRosterDialog(conversation); } else { Presences presences = contact.getPresences(); if (presences.size() == 0) { if (!contact.getOption(Contact.Options.TO) && !contact.getOption(Contact.Options.ASKING) && contact.getAccount().getStatus() == Account.State.ONLINE) { showAskForPresenceDialog(contact); } else if (!contact.getOption(Contact.Options.TO) || !contact.getOption(Contact.Options.FROM)) { warnMutalPresenceSubscription(conversation, listener); } else { conversation.setNextCounterpart(null); listener.onPresenceSelected(); } } else if (presences.size() == 1) { String presence = presences.asStringArray()[0]; try { conversation.setNextCounterpart(Jid.fromParts(contact.getJid().getLocalpart(),contact.getJid().getDomainpart(),presence)); } catch (InvalidJidException e) { conversation.setNextCounterpart(null); } listener.onPresenceSelected(); } else { final StringBuilder presence = new StringBuilder(); AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle(getString(R.string.choose_presence)); final String[] presencesArray = presences.asStringArray(); int preselectedPresence = 0; for (int i = 0; i < presencesArray.length; ++i) { if (presencesArray[i].equals(contact.lastseen.presence)) { preselectedPresence = i; break; } } presence.append(presencesArray[preselectedPresence]); builder.setSingleChoiceItems(presencesArray, preselectedPresence, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { presence.delete(0, presence.length()); presence.append(presencesArray[which]); } }); builder.setNegativeButton(R.string.cancel, null); builder.setPositiveButton(R.string.ok, new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { try { conversation.setNextCounterpart(Jid.fromParts(contact.getJid().getLocalpart(),contact.getJid().getDomainpart(),presence.toString())); } catch (InvalidJidException e) { conversation.setNextCounterpart(null); } listener.onPresenceSelected(); } }); builder.create().show(); } } } protected void onActivityResult(int requestCode, int resultCode, final Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == REQUEST_INVITE_TO_CONVERSATION && resultCode == RESULT_OK) { mPendingConferenceInvite = ConferenceInvite.parse(data); if (xmppConnectionServiceBound && mPendingConferenceInvite != null) { mPendingConferenceInvite.execute(this); mPendingConferenceInvite = null; } } } private UiCallback adhocCallback = new UiCallback() { @Override public void success(final Conversation conversation) { switchToConversation(conversation); runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(XmppActivity.this,R.string.conference_created,Toast.LENGTH_LONG).show(); } }); } @Override public void error(final int errorCode, Conversation object) { runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(XmppActivity.this,errorCode,Toast.LENGTH_LONG).show(); } }); } @Override public void userInputRequried(PendingIntent pi, Conversation object) { } }; public int getSecondaryTextColor() { return this.mSecondaryTextColor; } public int getPrimaryTextColor() { return this.mPrimaryTextColor; } public int getWarningTextColor() { return this.mColorRed; } public int getOnlineColor() { return this.mColorGreen; } public int getPrimaryBackgroundColor() { return this.mPrimaryBackgroundColor; } public int getSecondaryBackgroundColor() { return this.mSecondaryBackgroundColor; } public int getPixel(int dp) { DisplayMetrics metrics = getResources().getDisplayMetrics(); return ((int) (dp * metrics.density)); } public boolean copyTextToClipboard(String text, int labelResId) { ClipboardManager mClipBoardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE); String label = getResources().getString(labelResId); if (mClipBoardManager != null) { ClipData mClipData = ClipData.newPlainText(label, text); mClipBoardManager.setPrimaryClip(mClipData); return true; } return false; } protected void registerNdefPushMessageCallback() { NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this); if (nfcAdapter != null && nfcAdapter.isEnabled()) { nfcAdapter.setNdefPushMessageCallback(new NfcAdapter.CreateNdefMessageCallback() { @Override public NdefMessage createNdefMessage(NfcEvent nfcEvent) { return new NdefMessage(new NdefRecord[]{ NdefRecord.createUri(getShareableUri()), NdefRecord.createApplicationRecord("eu.siacs.conversations") }); } }, this); } } protected void unregisterNdefPushMessageCallback() { NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this); if (nfcAdapter != null && nfcAdapter.isEnabled()) { nfcAdapter.setNdefPushMessageCallback(null,this); } } protected String getShareableUri() { return null; } @Override public void onResume() { super.onResume(); if (this.getShareableUri()!=null) { this.registerNdefPushMessageCallback(); } } protected int findTheme() { if (getPreferences().getBoolean("use_larger_font", false)) { return R.style.ConversationsTheme_LargerText; } else { return R.style.ConversationsTheme; } } @Override public void onPause() { super.onPause(); this.unregisterNdefPushMessageCallback(); } protected void showQrCode() { String uri = getShareableUri(); if (uri!=null) { Point size = new Point(); getWindowManager().getDefaultDisplay().getSize(size); final int width = (size.x < size.y ? size.x : size.y); Bitmap bitmap = createQrCodeBitmap(uri, width); ImageView view = new ImageView(this); view.setImageBitmap(bitmap); AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setView(view); builder.create().show(); } } protected Bitmap createQrCodeBitmap(String input, int size) { Log.d(Config.LOGTAG,"qr code requested size: "+size); try { final QRCodeWriter QR_CODE_WRITER = new QRCodeWriter(); final Hashtable hints = new Hashtable<>(); hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M); final BitMatrix result = QR_CODE_WRITER.encode(input, BarcodeFormat.QR_CODE, size, size, hints); final int width = result.getWidth(); final int height = result.getHeight(); final int[] pixels = new int[width * height]; for (int y = 0; y < height; y++) { final int offset = y * width; for (int x = 0; x < width; x++) { pixels[offset + x] = result.get(x, y) ? Color.BLACK : Color.TRANSPARENT; } } final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); Log.d(Config.LOGTAG,"output size: "+width+"x"+height); bitmap.setPixels(pixels, 0, width, 0, 0, width, height); return bitmap; } catch (final WriterException e) { return null; } } public static class ConferenceInvite { private String uuid; private List jids = new ArrayList<>(); public static ConferenceInvite parse(Intent data) { ConferenceInvite invite = new ConferenceInvite(); invite.uuid = data.getStringExtra("conversation"); if (invite.uuid == null) { return null; } try { if (data.getBooleanExtra("multiple", false)) { String[] toAdd = data.getStringArrayExtra("contacts"); for (String item : toAdd) { invite.jids.add(Jid.fromString(item)); } } else { invite.jids.add(Jid.fromString(data.getStringExtra("contact"))); } } catch (final InvalidJidException ignored) { return null; } return invite; } public void execute(XmppActivity activity) { XmppConnectionService service = activity.xmppConnectionService; Conversation conversation = service.findConversationByUuid(this.uuid); if (conversation == null) { return; } if (conversation.getMode() == Conversation.MODE_MULTI) { for (Jid jid : jids) { service.invite(conversation, jid); } } else { jids.add(conversation.getJid().toBareJid()); service.createAdhocConference(conversation.getAccount(), jids, activity.adhocCallback); } } } public AvatarService avatarService() { return xmppConnectionService.getAvatarService(); } class BitmapWorkerTask extends AsyncTask { private final WeakReference imageViewReference; private Message message = null; public BitmapWorkerTask(ImageView imageView) { imageViewReference = new WeakReference<>(imageView); } @Override protected Bitmap doInBackground(Message... params) { message = params[0]; try { return xmppConnectionService.getFileBackend().getThumbnail( message, (int) (metrics.density * 288), false); } catch (FileNotFoundException e) { return null; } } @Override protected void onPostExecute(Bitmap bitmap) { if (bitmap != null) { final ImageView imageView = imageViewReference.get(); if (imageView != null) { imageView.setImageBitmap(bitmap); imageView.setBackgroundColor(0x00000000); } } } } public void loadBitmap(Message message, ImageView imageView) { Bitmap bm; try { bm = xmppConnectionService.getFileBackend().getThumbnail(message, (int) (metrics.density * 288), true); } catch (FileNotFoundException e) { bm = null; } if (bm != null) { imageView.setImageBitmap(bm); imageView.setBackgroundColor(0x00000000); } else { if (cancelPotentialWork(message, imageView)) { imageView.setBackgroundColor(0xff333333); final BitmapWorkerTask task = new BitmapWorkerTask(imageView); final AsyncDrawable asyncDrawable = new AsyncDrawable( getResources(), null, task); imageView.setImageDrawable(asyncDrawable); try { task.execute(message); } catch (final RejectedExecutionException ignored) { } } } } public static boolean cancelPotentialWork(Message message, ImageView imageView) { final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView); if (bitmapWorkerTask != null) { final Message oldMessage = bitmapWorkerTask.message; if (oldMessage == null || message != oldMessage) { bitmapWorkerTask.cancel(true); } else { return false; } } return true; } private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) { if (imageView != null) { final Drawable drawable = imageView.getDrawable(); if (drawable instanceof AsyncDrawable) { final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable; return asyncDrawable.getBitmapWorkerTask(); } } return null; } static class AsyncDrawable extends BitmapDrawable { private final WeakReference bitmapWorkerTaskReference; public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) { super(res, bitmap); bitmapWorkerTaskReference = new WeakReference<>( bitmapWorkerTask); } public BitmapWorkerTask getBitmapWorkerTask() { return bitmapWorkerTaskReference.get(); } } }