package eu.siacs.conversations.ui; import java.io.FileNotFoundException; import java.lang.ref.WeakReference; import java.util.ArrayList; import java.util.List; import eu.siacs.conversations.R; import eu.siacs.conversations.entities.Contact; import eu.siacs.conversations.entities.Conversation; import eu.siacs.conversations.entities.Message; import eu.siacs.conversations.services.ImageProvider; import eu.siacs.conversations.services.XmppConnectionService.OnConversationUpdate; import eu.siacs.conversations.utils.ExceptionHelper; import eu.siacs.conversations.utils.UIHelper; import android.net.Uri; import android.os.AsyncTask; import android.os.Bundle; import android.preference.PreferenceManager; import android.provider.MediaStore; import android.app.AlertDialog; import android.app.FragmentTransaction; import android.app.PendingIntent; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnClickListener; import android.content.IntentSender.SendIntentException; import android.content.Intent; import android.content.SharedPreferences; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.Color; import android.graphics.Typeface; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.support.v4.widget.SlidingPaneLayout; import android.support.v4.widget.SlidingPaneLayout.PanelSlideListener; import android.util.DisplayMetrics; import android.util.Log; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter; import android.widget.CheckBox; import android.widget.ListView; import android.widget.PopupMenu; import android.widget.PopupMenu.OnMenuItemClickListener; import android.widget.TextView; import android.widget.ImageView; import android.widget.Toast; public class ConversationActivity extends XmppActivity { public static final String VIEW_CONVERSATION = "viewConversation"; public static final String CONVERSATION = "conversationUuid"; public static final String TEXT = "text"; public static final String PRESENCE = "eu.siacs.conversations.presence"; public static final int REQUEST_SEND_MESSAGE = 0x75441; public static final int REQUEST_DECRYPT_PGP = 0x76783; private static final int REQUEST_ATTACH_FILE_DIALOG = 0x48502; private static final int REQUEST_IMAGE_CAPTURE = 0x33788; private static final int REQUEST_RECORD_AUDIO = 0x46189; private static final int REQUEST_SEND_PGP_IMAGE = 0x53883; public static final int REQUEST_ENCRYPT_MESSAGE = 0x378018; private static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x92734; private static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x84123; private static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x75291; protected SlidingPaneLayout spl; private List conversationList = new ArrayList(); private Conversation selectedConversation = null; private ListView listView; private boolean paneShouldBeOpen = true; private boolean useSubject = true; private boolean showLastseen = false; private ArrayAdapter listAdapter; private OnConversationUpdate onConvChanged = new OnConversationUpdate() { @Override public void onConversationUpdate() { runOnUiThread(new Runnable() { @Override public void run() { updateConversationList(); if (paneShouldBeOpen) { if (conversationList.size() >= 1) { swapConversationFragment(); } else { startActivity(new Intent(getApplicationContext(), StartConversation.class)); finish(); } } ConversationFragment selectedFragment = (ConversationFragment) getFragmentManager() .findFragmentByTag("conversation"); if (selectedFragment != null) { selectedFragment.updateMessages(); } } }); } }; protected ConversationActivity activity = this; private DisplayMetrics metrics; private Toast prepareImageToast; public List getConversationList() { return this.conversationList; } public Conversation getSelectedConversation() { return this.selectedConversation; } public void setSelectedConversation(Conversation conversation) { this.selectedConversation = conversation; } public ListView getConversationListView() { return this.listView; } public SlidingPaneLayout getSlidingPaneLayout() { return this.spl; } public boolean shouldPaneBeOpen() { return paneShouldBeOpen; } @Override protected void onCreate(Bundle savedInstanceState) { metrics = getResources().getDisplayMetrics(); super.onCreate(savedInstanceState); setContentView(R.layout.fragment_conversations_overview); listView = (ListView) findViewById(R.id.list); this.listAdapter = new ArrayAdapter(this, R.layout.conversation_list_row, conversationList) { @Override public View getView(int position, View view, ViewGroup parent) { if (view == null) { LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); view = (View) inflater.inflate( R.layout.conversation_list_row, null); } Conversation conv; if (conversationList.size() > position) { conv = getItem(position); } else { return view; } if (!spl.isSlideable()) { if (conv == getSelectedConversation()) { view.setBackgroundColor(0xffdddddd); } else { view.setBackgroundColor(Color.TRANSPARENT); } } else { view.setBackgroundColor(Color.TRANSPARENT); } TextView convName = (TextView) view .findViewById(R.id.conversation_name); convName.setText(conv.getName(useSubject)); TextView convLastMsg = (TextView) view .findViewById(R.id.conversation_lastmsg); ImageView imagePreview = (ImageView) view .findViewById(R.id.conversation_lastimage); Message latestMessage = conv.getLatestMessage(); if (latestMessage.getType() == Message.TYPE_TEXT) { if ((latestMessage.getEncryption() != Message.ENCRYPTION_PGP) && (latestMessage.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED)) { convLastMsg.setText(conv.getLatestMessage().getBody()); } else { convLastMsg .setText(getText(R.string.encrypted_message_received)); } convLastMsg.setVisibility(View.VISIBLE); imagePreview.setVisibility(View.GONE); } else if (latestMessage.getType() == Message.TYPE_IMAGE) { if (latestMessage.getStatus() >= Message.STATUS_RECIEVED) { convLastMsg.setVisibility(View.GONE); imagePreview.setVisibility(View.VISIBLE); loadBitmap(latestMessage, imagePreview); } else { convLastMsg.setVisibility(View.VISIBLE); imagePreview.setVisibility(View.GONE); if (latestMessage.getStatus() == Message.STATUS_RECEIVED_OFFER) { convLastMsg .setText(getText(R.string.image_offered_for_download)); } else if (latestMessage.getStatus() == Message.STATUS_RECIEVING) { convLastMsg .setText(getText(R.string.receiving_image)); } else { convLastMsg.setText(""); } } } if (!conv.isRead()) { convName.setTypeface(null, Typeface.BOLD); convLastMsg.setTypeface(null, Typeface.BOLD); } else { convName.setTypeface(null, Typeface.NORMAL); convLastMsg.setTypeface(null, Typeface.NORMAL); } ((TextView) view.findViewById(R.id.conversation_lastupdate)) .setText(UIHelper.readableTimeDifference(getContext(), conv.getLatestMessage().getTimeSent())); ImageView profilePicture = (ImageView) view .findViewById(R.id.conversation_image); profilePicture.setImageBitmap(UIHelper.getContactPicture(conv, 56, activity.getApplicationContext(), false)); return view; } }; listView.setAdapter(this.listAdapter); listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView arg0, View clickedView, int position, long arg3) { paneShouldBeOpen = false; if (getSelectedConversation() != conversationList.get(position)) { setSelectedConversation(conversationList.get(position)); swapConversationFragment(); // .onBackendConnected(conversationList.get(position)); } else { spl.closePane(); } } }); spl = (SlidingPaneLayout) findViewById(R.id.slidingpanelayout); spl.setParallaxDistance(150); spl.setShadowResource(R.drawable.es_slidingpane_shadow); spl.setSliderFadeColor(0); spl.setPanelSlideListener(new PanelSlideListener() { @Override public void onPanelOpened(View arg0) { paneShouldBeOpen = true; getActionBar().setDisplayHomeAsUpEnabled(false); getActionBar().setHomeButtonEnabled(false); getActionBar().setTitle(R.string.app_name); invalidateOptionsMenu(); hideKeyboard(); } @Override public void onPanelClosed(View arg0) { paneShouldBeOpen = false; if ((conversationList.size() > 0) && (getSelectedConversation() != null)) { getActionBar().setDisplayHomeAsUpEnabled(true); getActionBar().setHomeButtonEnabled(true); getActionBar().setTitle( getSelectedConversation().getName(useSubject)); invalidateOptionsMenu(); if (!getSelectedConversation().isRead()) { xmppConnectionService .markRead(getSelectedConversation()); UIHelper.updateNotification(getApplicationContext(), getConversationList(), null, false); listView.invalidateViews(); } } } @Override public void onPanelSlide(View arg0, float arg1) { // TODO Auto-generated method stub } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.conversations, menu); MenuItem menuSecure = (MenuItem) menu.findItem(R.id.action_security); MenuItem menuArchive = (MenuItem) menu.findItem(R.id.action_archive); MenuItem menuMucDetails = (MenuItem) menu .findItem(R.id.action_muc_details); MenuItem menuContactDetails = (MenuItem) menu .findItem(R.id.action_contact_details); MenuItem menuInviteContacts = (MenuItem) menu .findItem(R.id.action_invite); MenuItem menuAttach = (MenuItem) menu.findItem(R.id.action_attach_file); MenuItem menuClearHistory = (MenuItem) menu .findItem(R.id.action_clear_history); if ((spl.isOpen() && (spl.isSlideable()))) { menuArchive.setVisible(false); menuMucDetails.setVisible(false); menuContactDetails.setVisible(false); menuSecure.setVisible(false); menuInviteContacts.setVisible(false); menuAttach.setVisible(false); menuClearHistory.setVisible(false); } else { ((MenuItem) menu.findItem(R.id.action_add)).setVisible(!spl .isSlideable()); if (this.getSelectedConversation() != null) { if (this.getSelectedConversation().getLatestMessage() .getEncryption() != Message.ENCRYPTION_NONE) { menuSecure.setIcon(R.drawable.ic_action_secure); } if (this.getSelectedConversation().getMode() == Conversation.MODE_MULTI) { menuContactDetails.setVisible(false); menuAttach.setVisible(false); } else { menuMucDetails.setVisible(false); menuInviteContacts.setVisible(false); } } } return true; } private void selectPresenceToAttachFile(final int attachmentChoice) { selectPresence(getSelectedConversation(), new OnPresenceSelected() { @Override public void onPresenceSelected() { if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO) { Intent takePictureIntent = new Intent( MediaStore.ACTION_IMAGE_CAPTURE); takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, ImageProvider.getIncomingContentUri()); if (takePictureIntent.resolveActivity(getPackageManager()) != null) { startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE); } } else if (attachmentChoice == ATTACHMENT_CHOICE_CHOOSE_IMAGE) { Intent attachFileIntent = new Intent(); attachFileIntent.setType("image/*"); attachFileIntent.setAction(Intent.ACTION_GET_CONTENT); Intent chooser = Intent.createChooser(attachFileIntent, getString(R.string.attach_file)); startActivityForResult(chooser, REQUEST_ATTACH_FILE_DIALOG); } else if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) { Intent intent = new Intent( MediaStore.Audio.Media.RECORD_SOUND_ACTION); startActivityForResult(intent, REQUEST_RECORD_AUDIO); } } }); } private void attachFile(final int attachmentChoice) { final Conversation conversation = getSelectedConversation(); if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) { if (hasPgp()) { if (conversation.getContact().getPgpKeyId() != 0) { xmppConnectionService.getPgpEngine().hasKey( conversation.getContact(), new UiCallback() { @Override public void userInputRequried(PendingIntent pi, Contact contact) { ConversationActivity.this.runIntent(pi, attachmentChoice); } @Override public void success(Contact contact) { selectPresenceToAttachFile(attachmentChoice); } @Override public void error(int error, Contact contact) { displayErrorDialog(error); } }); } else { final ConversationFragment fragment = (ConversationFragment) getFragmentManager() .findFragmentByTag("conversation"); if (fragment != null) { fragment.showNoPGPKeyDialog(false, new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { conversation .setNextEncryption(Message.ENCRYPTION_NONE); selectPresenceToAttachFile(attachmentChoice); } }); } } } else { showInstallPgpDialog(); } } else if (getSelectedConversation().getNextEncryption() == Message.ENCRYPTION_NONE) { selectPresenceToAttachFile(attachmentChoice); } else { selectPresenceToAttachFile(attachmentChoice); } } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: spl.openPane(); break; case R.id.action_attach_file: View menuAttachFile = findViewById(R.id.action_attach_file); if (menuAttachFile==null) { break; } PopupMenu attachFilePopup = new PopupMenu(this, menuAttachFile); attachFilePopup.inflate(R.menu.attachment_choices); attachFilePopup .setOnMenuItemClickListener(new OnMenuItemClickListener() { @Override public boolean onMenuItemClick(MenuItem item) { switch (item.getItemId()) { case R.id.attach_choose_picture: attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE); break; case R.id.attach_take_picture: attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO); break; case R.id.attach_record_voice: attachFile(ATTACHMENT_CHOICE_RECORD_VOICE); break; } return false; } }); attachFilePopup.show(); break; case R.id.action_add: startActivity(new Intent(this, StartConversation.class)); break; case R.id.action_archive: this.endConversation(getSelectedConversation()); break; case R.id.action_contact_details: Contact contact = this.getSelectedConversation().getContact(); if (contact.showInRoster()) { switchToContactDetails(contact); } else { showAddToRosterDialog(getSelectedConversation()); } break; case R.id.action_muc_details: Intent intent = new Intent(this, MucDetailsActivity.class); intent.setAction(MucDetailsActivity.ACTION_VIEW_MUC); intent.putExtra("uuid", getSelectedConversation().getUuid()); startActivity(intent); break; case R.id.action_invite: /*Intent inviteIntent = new Intent(getApplicationContext(), ContactsActivity.class); inviteIntent.setAction("invite"); inviteIntent.putExtra("uuid", getSelectedConversation().getUuid()); startActivity(inviteIntent);*/ break; case R.id.action_security: final Conversation conversation = getSelectedConversation(); View menuItemView = findViewById(R.id.action_security); if (menuItemView==null) { break; } PopupMenu popup = new PopupMenu(this, menuItemView); final ConversationFragment fragment = (ConversationFragment) getFragmentManager() .findFragmentByTag("conversation"); if (fragment != null) { popup.setOnMenuItemClickListener(new OnMenuItemClickListener() { @Override public boolean onMenuItemClick(MenuItem item) { switch (item.getItemId()) { case R.id.encryption_choice_none: conversation .setNextEncryption(Message.ENCRYPTION_NONE); item.setChecked(true); break; case R.id.encryption_choice_otr: conversation .setNextEncryption(Message.ENCRYPTION_OTR); item.setChecked(true); break; case R.id.encryption_choice_pgp: if (hasPgp()) { if (conversation.getAccount().getKeys() .has("pgp_signature")) { conversation .setNextEncryption(Message.ENCRYPTION_PGP); item.setChecked(true); } else { announcePgp(conversation.getAccount(), conversation); } } else { showInstallPgpDialog(); } break; default: conversation .setNextEncryption(Message.ENCRYPTION_NONE); break; } fragment.updateChatMsgHint(); return true; } }); popup.inflate(R.menu.encryption_choices); MenuItem otr = popup.getMenu().findItem( R.id.encryption_choice_otr); if (conversation.getMode() == Conversation.MODE_MULTI) { otr.setEnabled(false); } switch (conversation.getNextEncryption()) { case Message.ENCRYPTION_NONE: popup.getMenu().findItem(R.id.encryption_choice_none) .setChecked(true); break; case Message.ENCRYPTION_OTR: otr.setChecked(true); break; case Message.ENCRYPTION_PGP: popup.getMenu().findItem(R.id.encryption_choice_pgp) .setChecked(true); break; default: popup.getMenu().findItem(R.id.encryption_choice_none) .setChecked(true); break; } popup.show(); } break; case R.id.action_clear_history: clearHistoryDialog(getSelectedConversation()); break; default: break; } return super.onOptionsItemSelected(item); } private void endConversation(Conversation conversation) { conversation.setStatus(Conversation.STATUS_ARCHIVED); paneShouldBeOpen = true; spl.openPane(); xmppConnectionService.archiveConversation(conversation); if (conversationList.size() > 0) { setSelectedConversation(conversationList.get(0)); } else { setSelectedConversation(null); } } protected void clearHistoryDialog(final Conversation conversation) { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle(getString(R.string.clear_conversation_history)); View dialogView = getLayoutInflater().inflate( R.layout.dialog_clear_history, null); final CheckBox endConversationCheckBox = (CheckBox) dialogView .findViewById(R.id.end_conversation_checkbox); builder.setView(dialogView); builder.setNegativeButton(getString(R.string.cancel), null); builder.setPositiveButton(getString(R.string.delete_messages), new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { activity.xmppConnectionService .clearConversationHistory(conversation); if (endConversationCheckBox.isChecked()) { endConversation(conversation); } } }); builder.create().show(); } protected ConversationFragment swapConversationFragment() { ConversationFragment selectedFragment = new ConversationFragment(); FragmentTransaction transaction = getFragmentManager() .beginTransaction(); transaction.replace(R.id.selected_conversation, selectedFragment, "conversation"); transaction.commitAllowingStateLoss(); return selectedFragment; } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { if (!spl.isOpen()) { spl.openPane(); return false; } } return super.onKeyDown(keyCode, event); } @Override protected void onNewIntent(Intent intent) { if ((Intent.ACTION_VIEW.equals(intent.getAction()) && (VIEW_CONVERSATION .equals(intent.getType())))) { String convToView = (String) intent.getExtras().get(CONVERSATION); updateConversationList(); for (int i = 0; i < conversationList.size(); ++i) { if (conversationList.get(i).getUuid().equals(convToView)) { setSelectedConversation(conversationList.get(i)); break; } } paneShouldBeOpen = false; String text = intent.getExtras().getString(TEXT, null); swapConversationFragment().setText(text); } } @Override public void onStart() { super.onStart(); SharedPreferences preferences = PreferenceManager .getDefaultSharedPreferences(this); this.useSubject = preferences.getBoolean("use_subject_in_muc", true); this.showLastseen = preferences.getBoolean("show_last_seen", false); if (this.xmppConnectionServiceBound) { this.onBackendConnected(); } if (conversationList.size() >= 1) { onConvChanged.onConversationUpdate(); } } @Override protected void onStop() { if (xmppConnectionServiceBound) { xmppConnectionService.removeOnConversationListChangedListener(); } super.onStop(); } @Override void onBackendConnected() { this.registerListener(); if (conversationList.size() == 0) { updateConversationList(); } if ((getIntent().getAction() != null) && (getIntent().getAction().equals(Intent.ACTION_VIEW) && (!handledViewIntent))) { if (getIntent().getType().equals( ConversationActivity.VIEW_CONVERSATION)) { handledViewIntent = true; String convToView = (String) getIntent().getExtras().get( CONVERSATION); for (int i = 0; i < conversationList.size(); ++i) { if (conversationList.get(i).getUuid().equals(convToView)) { setSelectedConversation(conversationList.get(i)); } } paneShouldBeOpen = false; String text = getIntent().getExtras().getString(TEXT, null); swapConversationFragment().setText(text); } } else { if (xmppConnectionService.getAccounts().size() == 0) { startActivity(new Intent(this, ManageAccountActivity.class)); finish(); } else if (conversationList.size() <= 0) { // add no history startActivity(new Intent(this, StartConversation.class)); finish(); } else { spl.openPane(); // find currently loaded fragment ConversationFragment selectedFragment = (ConversationFragment) getFragmentManager() .findFragmentByTag("conversation"); if (selectedFragment != null) { selectedFragment.onBackendConnected(); } else { setSelectedConversation(conversationList.get(0)); swapConversationFragment(); } ExceptionHelper.checkForCrash(this, this.xmppConnectionService); } } } public void registerListener() { if (xmppConnectionServiceBound) { xmppConnectionService .setOnConversationListChangedListener(this.onConvChanged); } } @Override protected void onActivityResult(int requestCode, int resultCode, final Intent data) { super.onActivityResult(requestCode, resultCode, data); if (resultCode == RESULT_OK) { if (requestCode == REQUEST_DECRYPT_PGP) { ConversationFragment selectedFragment = (ConversationFragment) getFragmentManager() .findFragmentByTag("conversation"); if (selectedFragment != null) { selectedFragment.hideSnackbar(); } } else if (requestCode == REQUEST_ATTACH_FILE_DIALOG) { attachImageToConversation(getSelectedConversation(), data.getData()); } else if (requestCode == REQUEST_SEND_PGP_IMAGE) { } else if (requestCode == ATTACHMENT_CHOICE_CHOOSE_IMAGE) { attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE); } else if (requestCode == ATTACHMENT_CHOICE_TAKE_PHOTO) { attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO); } else if (requestCode == REQUEST_ANNOUNCE_PGP) { announcePgp(getSelectedConversation().getAccount(), getSelectedConversation()); } else if (requestCode == REQUEST_ENCRYPT_MESSAGE) { // encryptTextMessage(); } else if (requestCode == REQUEST_IMAGE_CAPTURE) { attachImageToConversation(getSelectedConversation(), null); } else if (requestCode == REQUEST_RECORD_AUDIO) { Log.d("xmppService", data.getData().toString()); attachAudioToConversation(getSelectedConversation(), data.getData()); } else { Log.d(LOGTAG, "unknown result code:" + requestCode); } } } private void attachAudioToConversation(Conversation conversation, Uri uri) { } private void attachImageToConversation(Conversation conversation, Uri uri) { prepareImageToast = Toast.makeText(getApplicationContext(), getText(R.string.preparing_image), Toast.LENGTH_LONG); prepareImageToast.show(); xmppConnectionService.attachImageToConversation(conversation, uri, new UiCallback() { @Override public void userInputRequried(PendingIntent pi, Message object) { hidePrepareImageToast(); ConversationActivity.this.runIntent(pi, ConversationActivity.REQUEST_SEND_PGP_IMAGE); } @Override public void success(Message message) { xmppConnectionService.sendMessage(message); } @Override public void error(int error, Message message) { hidePrepareImageToast(); displayErrorDialog(error); } }); } private void hidePrepareImageToast() { if (prepareImageToast != null) { runOnUiThread(new Runnable() { @Override public void run() { prepareImageToast.cancel(); } }); } } public void updateConversationList() { xmppConnectionService.populateWithOrderedConversations(conversationList); listView.invalidateViews(); } public boolean showLastseen() { if (getSelectedConversation() == null) { return false; } else { return this.showLastseen && getSelectedConversation().getMode() == Conversation.MODE_SINGLE; } } public void runIntent(PendingIntent pi, int requestCode) { try { this.startIntentSenderForResult(pi.getIntentSender(), requestCode, null, 0, 0, 0); } catch (SendIntentException e1) { Log.d("xmppService", "failed to start intent to send message"); } } 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) { Log.d("xmppService", "file not found!"); return null; } } @Override protected void onPostExecute(Bitmap bitmap) { if (imageViewReference != null && 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); task.execute(message); } } } 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(); } } public void encryptTextMessage(Message message) { xmppConnectionService.getPgpEngine().encrypt(message, new UiCallback() { @Override public void userInputRequried(PendingIntent pi, Message message) { activity.runIntent(pi, ConversationActivity.REQUEST_SEND_MESSAGE); } @Override public void success(Message message) { message.setEncryption(Message.ENCRYPTION_DECRYPTED); xmppConnectionService.sendMessage(message); } @Override public void error(int error, Message message) { } }); } }