package eu.siacs.conversations.ui.adapter; import android.content.ActivityNotFoundException; import android.content.Intent; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.Typeface; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.net.Uri; import android.os.AsyncTask; import android.text.Spannable; import android.text.SpannableString; import android.text.Spanned; import android.text.style.ForegroundColorSpan; import android.text.style.RelativeSizeSpan; import android.text.style.StyleSpan; import android.util.DisplayMetrics; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnLongClickListener; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; import java.lang.ref.WeakReference; import java.util.List; import java.util.concurrent.RejectedExecutionException; import eu.siacs.conversations.R; import eu.siacs.conversations.crypto.axolotl.XmppAxolotlSession; import eu.siacs.conversations.entities.Account; import eu.siacs.conversations.entities.Contact; import eu.siacs.conversations.entities.Conversation; import eu.siacs.conversations.entities.DownloadableFile; import eu.siacs.conversations.entities.Message; import eu.siacs.conversations.entities.Message.FileParams; import eu.siacs.conversations.entities.Transferable; import eu.siacs.conversations.ui.ConversationActivity; import eu.siacs.conversations.utils.CryptoHelper; import eu.siacs.conversations.utils.GeoHelper; import eu.siacs.conversations.utils.UIHelper; public class MessageAdapter extends ArrayAdapter { private static final int SENT = 0; private static final int RECEIVED = 1; private static final int STATUS = 2; private ConversationActivity activity; private DisplayMetrics metrics; private OnContactPictureClicked mOnContactPictureClickedListener; private OnContactPictureLongClicked mOnContactPictureLongClickedListener; private OnLongClickListener openContextMenu = new OnLongClickListener() { @Override public boolean onLongClick(View v) { v.showContextMenu(); return true; } }; private boolean mIndicateReceived = false; private boolean mUseWhiteBackground = false; public MessageAdapter(ConversationActivity activity, List messages) { super(activity, 0, messages); this.activity = activity; metrics = getContext().getResources().getDisplayMetrics(); updatePreferences(); } public void setOnContactPictureClicked(OnContactPictureClicked listener) { this.mOnContactPictureClickedListener = listener; } public void setOnContactPictureLongClicked( OnContactPictureLongClicked listener) { this.mOnContactPictureLongClickedListener = listener; } @Override public int getViewTypeCount() { return 3; } public int getItemViewType(Message message) { if (message.getType() == Message.TYPE_STATUS) { return STATUS; } else if (message.getStatus() <= Message.STATUS_RECEIVED) { return RECEIVED; } return SENT; } @Override public int getItemViewType(int position) { return this.getItemViewType(getItem(position)); } private int getMessageTextColor(boolean onDark, boolean primary) { if (onDark) { return activity.getResources().getColor(primary ? R.color.white : R.color.white70); } else { return activity.getResources().getColor(primary ? R.color.black87 : R.color.black54); } } private void displayStatus(ViewHolder viewHolder, Message message, int type, boolean darkBackground) { String filesize = null; String info = null; boolean error = false; if (viewHolder.indicatorReceived != null) { viewHolder.indicatorReceived.setVisibility(View.GONE); } boolean multiReceived = message.getConversation().getMode() == Conversation.MODE_MULTI && message.getMergedStatus() <= Message.STATUS_RECEIVED; if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE || message.getTransferable() != null) { FileParams params = message.getFileParams(); if (params.size > (1.5 * 1024 * 1024)) { filesize = params.size / (1024 * 1024)+ " MiB"; } else if (params.size > 0) { filesize = params.size / 1024 + " KiB"; } if (message.getTransferable() != null && message.getTransferable().getStatus() == Transferable.STATUS_FAILED) { error = true; } } switch (message.getMergedStatus()) { case Message.STATUS_WAITING: info = getContext().getString(R.string.waiting); break; case Message.STATUS_UNSEND: Transferable d = message.getTransferable(); if (d!=null) { info = getContext().getString(R.string.sending_file,d.getProgress()); } else { info = getContext().getString(R.string.sending); } break; case Message.STATUS_OFFERED: info = getContext().getString(R.string.offering); break; case Message.STATUS_SEND_RECEIVED: if (mIndicateReceived) { viewHolder.indicatorReceived.setVisibility(View.VISIBLE); } break; case Message.STATUS_SEND_DISPLAYED: if (mIndicateReceived) { viewHolder.indicatorReceived.setVisibility(View.VISIBLE); } break; case Message.STATUS_SEND_FAILED: info = getContext().getString(R.string.send_failed); error = true; break; default: if (multiReceived) { info = UIHelper.getMessageDisplayName(message); } break; } if (error && type == SENT) { viewHolder.time.setTextColor(activity.getWarningTextColor()); } else { viewHolder.time.setTextColor(this.getMessageTextColor(darkBackground,false)); } if (message.getEncryption() == Message.ENCRYPTION_NONE) { viewHolder.indicator.setVisibility(View.GONE); } else { viewHolder.indicator.setImageResource(darkBackground ? R.drawable.ic_secure_indicator_white : R.drawable.ic_secure_indicator); viewHolder.indicator.setVisibility(View.VISIBLE); if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) { XmppAxolotlSession.Trust trust = message.getConversation() .getAccount().getAxolotlService().getFingerprintTrust( message.getAxolotlFingerprint()); if(trust == null || trust != XmppAxolotlSession.Trust.TRUSTED) { viewHolder.indicator.setColorFilter(activity.getWarningTextColor()); viewHolder.indicator.setAlpha(1.0f); } else { viewHolder.indicator.clearColorFilter(); if (darkBackground) { viewHolder.indicator.setAlpha(0.7f); } else { viewHolder.indicator.setAlpha(0.57f); } } } else { viewHolder.indicator.clearColorFilter(); if (darkBackground) { viewHolder.indicator.setAlpha(0.7f); } else { viewHolder.indicator.setAlpha(0.57f); } } } String formatedTime = UIHelper.readableTimeDifferenceFull(getContext(), message.getMergedTimeSent()); if (message.getStatus() <= Message.STATUS_RECEIVED) { if ((filesize != null) && (info != null)) { viewHolder.time.setText(formatedTime + " \u00B7 " + filesize +" \u00B7 " + info); } else if ((filesize == null) && (info != null)) { viewHolder.time.setText(formatedTime + " \u00B7 " + info); } else if ((filesize != null) && (info == null)) { viewHolder.time.setText(formatedTime + " \u00B7 " + filesize); } else { viewHolder.time.setText(formatedTime); } } else { if ((filesize != null) && (info != null)) { viewHolder.time.setText(filesize + " \u00B7 " + info); } else if ((filesize == null) && (info != null)) { if (error) { viewHolder.time.setText(info + " \u00B7 " + formatedTime); } else { viewHolder.time.setText(info); } } else if ((filesize != null) && (info == null)) { viewHolder.time.setText(filesize + " \u00B7 " + formatedTime); } else { viewHolder.time.setText(formatedTime); } } } private void displayInfoMessage(ViewHolder viewHolder, String text, boolean darkBackground) { if (viewHolder.download_button != null) { viewHolder.download_button.setVisibility(View.GONE); } viewHolder.image.setVisibility(View.GONE); viewHolder.messageBody.setVisibility(View.VISIBLE); viewHolder.messageBody.setText(text); viewHolder.messageBody.setTextColor(getMessageTextColor(darkBackground, false)); viewHolder.messageBody.setTypeface(null, Typeface.ITALIC); viewHolder.messageBody.setTextIsSelectable(false); } private void displayDecryptionFailed(ViewHolder viewHolder, boolean darkBackground) { if (viewHolder.download_button != null) { viewHolder.download_button.setVisibility(View.GONE); } viewHolder.image.setVisibility(View.GONE); viewHolder.messageBody.setVisibility(View.VISIBLE); viewHolder.messageBody.setText(getContext().getString( R.string.decryption_failed)); viewHolder.messageBody.setTextColor(getMessageTextColor(darkBackground, false)); viewHolder.messageBody.setTypeface(null, Typeface.NORMAL); viewHolder.messageBody.setTextIsSelectable(false); } private void displayHeartMessage(final ViewHolder viewHolder, final String body) { if (viewHolder.download_button != null) { viewHolder.download_button.setVisibility(View.GONE); } viewHolder.image.setVisibility(View.GONE); viewHolder.messageBody.setVisibility(View.VISIBLE); viewHolder.messageBody.setIncludeFontPadding(false); Spannable span = new SpannableString(body); span.setSpan(new RelativeSizeSpan(4.0f), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); span.setSpan(new ForegroundColorSpan(activity.getWarningTextColor()), 0, body.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); viewHolder.messageBody.setText(span); } private void displayTextMessage(final ViewHolder viewHolder, final Message message, boolean darkBackground) { if (viewHolder.download_button != null) { viewHolder.download_button.setVisibility(View.GONE); } viewHolder.image.setVisibility(View.GONE); viewHolder.messageBody.setVisibility(View.VISIBLE); viewHolder.messageBody.setIncludeFontPadding(true); if (message.getBody() != null) { final String nick = UIHelper.getMessageDisplayName(message); String body; try { body = message.getMergedBody().replaceAll("^" + Message.ME_COMMAND, nick + " "); } catch (ArrayIndexOutOfBoundsException e) { body = message.getMergedBody(); } final SpannableString formattedBody = new SpannableString(body); int i = body.indexOf(Message.MERGE_SEPARATOR); while(i >= 0) { final int end = i + Message.MERGE_SEPARATOR.length(); formattedBody.setSpan(new RelativeSizeSpan(0.3f),i,end,Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); i = body.indexOf(Message.MERGE_SEPARATOR,end); } if (message.getType() != Message.TYPE_PRIVATE) { if (message.hasMeCommand()) { final Spannable span = new SpannableString(formattedBody); span.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 0, nick.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); viewHolder.messageBody.setText(span); } else { viewHolder.messageBody.setText(formattedBody); } } else { String privateMarker; if (message.getStatus() <= Message.STATUS_RECEIVED) { privateMarker = activity .getString(R.string.private_message); } else { final String to; if (message.getCounterpart() != null) { to = message.getCounterpart().getResourcepart(); } else { to = ""; } privateMarker = activity.getString(R.string.private_message_to, to); } final Spannable span = new SpannableString(privateMarker + " " + formattedBody); span.setSpan(new ForegroundColorSpan(getMessageTextColor(darkBackground,false)), 0, privateMarker .length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); span.setSpan(new StyleSpan(Typeface.BOLD), 0, privateMarker.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); if (message.hasMeCommand()) { span.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), privateMarker.length() + 1, privateMarker.length() + 1 + nick.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); } viewHolder.messageBody.setText(span); } } else { viewHolder.messageBody.setText(""); } viewHolder.messageBody.setTextColor(this.getMessageTextColor(darkBackground, true)); viewHolder.messageBody.setLinkTextColor(this.getMessageTextColor(darkBackground, true)); viewHolder.messageBody.setHighlightColor(activity.getResources().getColor(darkBackground ? R.color.grey800 : R.color.grey500)); viewHolder.messageBody.setTypeface(null, Typeface.NORMAL); viewHolder.messageBody.setTextIsSelectable(true); } private void displayDownloadableMessage(ViewHolder viewHolder, final Message message, String text) { viewHolder.image.setVisibility(View.GONE); viewHolder.messageBody.setVisibility(View.GONE); viewHolder.download_button.setVisibility(View.VISIBLE); viewHolder.download_button.setText(text); viewHolder.download_button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { startDownloadable(message); } }); viewHolder.download_button.setOnLongClickListener(openContextMenu); } private void displayOpenableMessage(ViewHolder viewHolder,final Message message) { viewHolder.image.setVisibility(View.GONE); viewHolder.messageBody.setVisibility(View.GONE); viewHolder.download_button.setVisibility(View.VISIBLE); viewHolder.download_button.setText(activity.getString(R.string.open_x_file, UIHelper.getFileDescriptionString(activity, message))); viewHolder.download_button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { openDownloadable(message); } }); viewHolder.download_button.setOnLongClickListener(openContextMenu); } private void displayLocationMessage(ViewHolder viewHolder, final Message message) { viewHolder.image.setVisibility(View.GONE); viewHolder.messageBody.setVisibility(View.GONE); viewHolder.download_button.setVisibility(View.VISIBLE); viewHolder.download_button.setText(R.string.show_location); viewHolder.download_button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { showLocation(message); } }); viewHolder.download_button.setOnLongClickListener(openContextMenu); } private void displayImageMessage(ViewHolder viewHolder, final Message message) { if (viewHolder.download_button != null) { viewHolder.download_button.setVisibility(View.GONE); } viewHolder.messageBody.setVisibility(View.GONE); viewHolder.image.setVisibility(View.VISIBLE); FileParams params = message.getFileParams(); double target = metrics.density * 288; int scalledW; int scalledH; if (params.width <= params.height) { scalledW = (int) (params.width / ((double) params.height / target)); scalledH = (int) target; } else { scalledW = (int) target; scalledH = (int) (params.height / ((double) params.width / target)); } LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(scalledW, scalledH); layoutParams.setMargins(0, (int) (metrics.density * 4), 0, (int) (metrics.density * 4)); viewHolder.image.setLayoutParams(layoutParams); activity.loadBitmap(message, viewHolder.image); viewHolder.image.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { openDownloadable(message); } }); viewHolder.image.setOnLongClickListener(openContextMenu); } @Override public View getView(int position, View view, ViewGroup parent) { final Message message = getItem(position); final boolean isInValidSession = message.isValidInSession(); final Conversation conversation = message.getConversation(); final Account account = conversation.getAccount(); final int type = getItemViewType(position); ViewHolder viewHolder; if (view == null) { viewHolder = new ViewHolder(); switch (type) { case SENT: view = activity.getLayoutInflater().inflate( R.layout.message_sent, parent, false); viewHolder.message_box = (LinearLayout) view .findViewById(R.id.message_box); viewHolder.contact_picture = (ImageView) view .findViewById(R.id.message_photo); viewHolder.download_button = (Button) view .findViewById(R.id.download_button); viewHolder.indicator = (ImageView) view .findViewById(R.id.security_indicator); viewHolder.image = (ImageView) view .findViewById(R.id.message_image); viewHolder.messageBody = (TextView) view .findViewById(R.id.message_body); viewHolder.time = (TextView) view .findViewById(R.id.message_time); viewHolder.indicatorReceived = (ImageView) view .findViewById(R.id.indicator_received); break; case RECEIVED: view = activity.getLayoutInflater().inflate( R.layout.message_received, parent, false); viewHolder.message_box = (LinearLayout) view .findViewById(R.id.message_box); viewHolder.contact_picture = (ImageView) view .findViewById(R.id.message_photo); viewHolder.download_button = (Button) view .findViewById(R.id.download_button); viewHolder.indicator = (ImageView) view .findViewById(R.id.security_indicator); viewHolder.image = (ImageView) view .findViewById(R.id.message_image); viewHolder.messageBody = (TextView) view .findViewById(R.id.message_body); viewHolder.time = (TextView) view .findViewById(R.id.message_time); viewHolder.indicatorReceived = (ImageView) view .findViewById(R.id.indicator_received); viewHolder.encryption = (TextView) view.findViewById(R.id.message_encryption); break; case STATUS: view = activity.getLayoutInflater().inflate(R.layout.message_status, parent, false); viewHolder.contact_picture = (ImageView) view.findViewById(R.id.message_photo); viewHolder.status_message = (TextView) view.findViewById(R.id.status_message); break; default: viewHolder = null; break; } view.setTag(viewHolder); } else { viewHolder = (ViewHolder) view.getTag(); if (viewHolder == null) { return view; } } boolean darkBackground = (type == RECEIVED && (!isInValidSession || !mUseWhiteBackground)); if (type == STATUS) { if (conversation.getMode() == Conversation.MODE_SINGLE) { viewHolder.contact_picture.setImageBitmap(activity .avatarService().get(conversation.getContact(), activity.getPixel(32))); viewHolder.contact_picture.setAlpha(0.5f); viewHolder.status_message.setText(message.getBody()); } return view; } else { loadAvatar(message,viewHolder.contact_picture); } viewHolder.contact_picture .setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (MessageAdapter.this.mOnContactPictureClickedListener != null) { MessageAdapter.this.mOnContactPictureClickedListener .onContactPictureClicked(message); } } }); viewHolder.contact_picture .setOnLongClickListener(new OnLongClickListener() { @Override public boolean onLongClick(View v) { if (MessageAdapter.this.mOnContactPictureLongClickedListener != null) { MessageAdapter.this.mOnContactPictureLongClickedListener .onContactPictureLongClicked(message); return true; } else { return false; } } }); final Transferable transferable = message.getTransferable(); if (transferable != null && transferable.getStatus() != Transferable.STATUS_UPLOADING) { if (transferable.getStatus() == Transferable.STATUS_OFFER) { displayDownloadableMessage(viewHolder,message,activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, message))); } else if (transferable.getStatus() == Transferable.STATUS_OFFER_CHECK_FILESIZE) { displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message))); } else { displayInfoMessage(viewHolder, UIHelper.getMessagePreview(activity, message).first,darkBackground); } } else if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) { displayImageMessage(viewHolder, message); } else if (message.getType() == Message.TYPE_FILE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) { if (message.getFileParams().width > 0) { displayImageMessage(viewHolder,message); } else { displayOpenableMessage(viewHolder, message); } } else if (message.getEncryption() == Message.ENCRYPTION_PGP) { if (activity.hasPgp()) { displayInfoMessage(viewHolder,activity.getString(R.string.encrypted_message),darkBackground); } else { displayInfoMessage(viewHolder,activity.getString(R.string.install_openkeychain),darkBackground); if (viewHolder != null) { viewHolder.message_box .setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { activity.showInstallPgpDialog(); } }); } } } else if (message.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) { displayDecryptionFailed(viewHolder,darkBackground); } else { if (GeoHelper.isGeoUri(message.getBody())) { displayLocationMessage(viewHolder,message); } else if (message.bodyIsHeart()) { displayHeartMessage(viewHolder, message.getBody().trim()); } else if (message.treatAsDownloadable() == Message.Decision.MUST) { displayDownloadableMessage(viewHolder, message, activity.getString(R.string.check_x_filesize, UIHelper.getFileDescriptionString(activity, message))); } else { displayTextMessage(viewHolder, message, darkBackground); } } if (type == RECEIVED) { if(isInValidSession) { if (mUseWhiteBackground) { viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_white); } else { viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received); } viewHolder.encryption.setVisibility(View.GONE); } else { viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_warning); viewHolder.encryption.setVisibility(View.VISIBLE); viewHolder.encryption.setText(CryptoHelper.encryptionTypeToText(message.getEncryption())); } } displayStatus(viewHolder, message, type, darkBackground); return view; } public void startDownloadable(Message message) { Transferable transferable = message.getTransferable(); if (transferable != null) { if (!transferable.start()) { Toast.makeText(activity, R.string.not_connected_try_again, Toast.LENGTH_SHORT).show(); } } else if (message.treatAsDownloadable() != Message.Decision.NEVER) { activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true); } } public void openDownloadable(Message message) { DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message); if (!file.exists()) { Toast.makeText(activity,R.string.file_deleted,Toast.LENGTH_SHORT).show(); return; } Intent openIntent = new Intent(Intent.ACTION_VIEW); String mime = file.getMimeType(); if (mime == null) { mime = "*/*"; } openIntent.setDataAndType(Uri.fromFile(file), mime); PackageManager manager = activity.getPackageManager(); List infos = manager.queryIntentActivities(openIntent, 0); if (infos.size() == 0) { openIntent.setDataAndType(Uri.fromFile(file),"*/*"); } try { getContext().startActivity(openIntent); return; } catch (ActivityNotFoundException e) { //ignored } Toast.makeText(activity,R.string.no_application_found_to_open_file,Toast.LENGTH_SHORT).show(); } public void showLocation(Message message) { for(Intent intent : GeoHelper.createGeoIntentsFromMessage(message)) { if (intent.resolveActivity(getContext().getPackageManager()) != null) { getContext().startActivity(intent); return; } } Toast.makeText(activity,R.string.no_application_found_to_display_location,Toast.LENGTH_SHORT).show(); } public void updatePreferences() { this.mIndicateReceived = activity.indicateReceived(); this.mUseWhiteBackground = activity.useWhiteBackground(); } public interface OnContactPictureClicked { void onContactPictureClicked(Message message); } public interface OnContactPictureLongClicked { void onContactPictureLongClicked(Message message); } private static class ViewHolder { protected LinearLayout message_box; protected Button download_button; protected ImageView image; protected ImageView indicator; protected ImageView indicatorReceived; protected TextView time; protected TextView messageBody; protected ImageView contact_picture; protected TextView status_message; protected TextView encryption; } 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) { return activity.avatarService().get(params[0], activity.getPixel(48), isCancelled()); } @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 loadAvatar(Message message, ImageView imageView) { if (cancelPotentialWork(message, imageView)) { final Bitmap bm = activity.avatarService().get(message, activity.getPixel(48), true); if (bm != null) { imageView.setImageBitmap(bm); imageView.setBackgroundColor(0x00000000); } else { imageView.setBackgroundColor(UIHelper.getColorForName(UIHelper.getMessageDisplayName(message))); imageView.setImageDrawable(null); final BitmapWorkerTask task = new BitmapWorkerTask(imageView); final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.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(); } } }