@Override
protected void onPostExecute(Bitmap bitmap) {
// Checks if has been canceled due to imageView recycling
if (isCancelled()) {
// bitmap = null;
return;
}
// The bitmap will now be attached to view
if (imageViewReference != null && bitmap != null) {
final SquareImageView imageView = imageViewReference.get();
// Checks if is still the task in charge to load image on that imageView
if (imageView != null && this == (BitmapWorkerTask) imageView.getAsyncTask()) {
// If the bitmap was already cached it will be directly attached to view
if (wasCached) {
imageView.setImageBitmap(bitmap);
}
// Otherwise a fading transaction will be used to shot it
else {
// Transition with transparent drawabale and the final bitmap
final TransitionDrawable td =
new TransitionDrawable(
new Drawable[] {
new ColorDrawable(Color.TRANSPARENT),
new BitmapDrawable(mActivity.getResources(), bitmap)
});
if (td != null) {
imageView.setImageDrawable(td);
td.startTransition(FADE_IN_TIME);
}
}
}
} else {
if (this.mOnAttachingFileErrorListener != null) {
mOnAttachingFileErrorListener.onAttachingFileErrorOccurred(mAttachment);
}
}
}
public static boolean isNewWork(Uri uri, SquareImageView imageView) {
final BitmapWorkerTask bitmapWorkerTask = (BitmapWorkerTask) imageView.getAsyncTask();
if (bitmapWorkerTask != null && bitmapWorkerTask.getAttachment() != null) {
final Uri bitmapData = bitmapWorkerTask.getAttachment().getUri();
// If bitmapData is not yet set or it differs from the new data
if (bitmapData == null || bitmapData != uri) {
// Cancel previous task
bitmapWorkerTask.cancel(true);
} else {
// The same work is already in progress
return false;
}
}
// No task associated with the ImageView, or an existing task was
// cancelled
return true;
}