// Once complete, see if ImageView is still around and set bitmap.
@Override
protected void onPostExecute(Bitmap bitmap) {
if (isCancelled()) {
bitmap = null;
}
if (mCallback != null && bitmap != null) {
final AppearBitmapLoader.Callback callback = mCallback.get();
if (callback != null) {
callback.onBitmapLoaded(bitmap);
callback.setTextureLoadTask(null);
}
}
}
public void loadBitmap(
final AppearBitmapData data,
final AppearBitmapLoader.Callback callback,
final int reqW,
final int reqH,
final boolean doCache) {
final String imageKey = getCacheKey(data);
Bitmap bitmap = getBitmapFromMemCache(imageKey);
if (bitmap != null) {
callback.onBitmapLoaded(bitmap);
} else {
Activity av = (Activity) mContext;
av.runOnUiThread(
new Runnable() {
public void run() {
if (cancelPotentialWork(data, callback)) {
final TextureLoadTask task = new TextureLoadTask(callback, reqW, reqH, doCache);
callback.setTextureLoadTask(task);
task.execute(data);
}
}
});
}
}
public static boolean cancelPotentialWork(
AppearBitmapData data, AppearBitmapLoader.Callback callback) {
final TextureLoadTask task = (TextureLoadTask) callback.getTextureLoadTask();
if (task != null && task instanceof TextureLoadTask) {
final AppearBitmapData prevData = task.data;
if (prevData != data) {
// Cancel previous task
task.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;
}