public static boolean cancelPotentialWork(String path, ImageView imageView) {
final LoadThumbnailTask loadPictureTask = getLoadTHumbnailTask(imageView);
if (loadPictureTask != null) {
final String bitmapPath = loadPictureTask.fotografia;
// If bitmapPath is not yet set or it differs from the new path
if (bitmapPath == null || !bitmapPath.equals(path)) {
// Cancel previous task
loadPictureTask.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;
}
public synchronized ExpenseThumbnail getThumbnail(
int id,
ExpenseThumbnail.OnExpenseThumbnailLoadedListener onLoadedListener,
Object onLoadedContext) {
ExpenseThumbnail thumb = mThumbs.get(new Integer(id));
if (thumb != null) {
if (onLoadedListener != null)
thumb.registerOnLoadedListener(onLoadedListener, onLoadedContext);
return thumb;
}
thumb = new ExpenseThumbnail(mContext, id);
if (onLoadedListener != null) {
thumb.registerOnLoadedListener(onLoadedListener, onLoadedContext);
Log.d(
"ThumbCache",
"thumb id "
+ Integer.toString(thumb.id)
+ " has new load listener "
+ onLoadedListener.toString()
+ " with context "
+ (onLoadedContext == null ? "<null>" : onLoadedContext.toString()));
}
LoadThumbnailTask task = new LoadThumbnailTask();
task.execute(thumb);
Log.d("ThumbCache", "added thumb id " + Integer.toString(thumb.id) + " to load list");
// cache the thumbnail
mThumbs.put(new Integer(id), thumb);
Log.d("ThumbCache", "cached thumb id " + Integer.toString(thumb.id));
return thumb;
}
