Examples with AsyncTaskLoader android.content.AsyncTaskLoader used on opensource projects

Example 1 with AsyncTaskLoader

use of android.content.AsyncTaskLoader in project muzei by romannurik.

the class FullScreenActivity method onCreateLoader.

@Override
public Loader<Bitmap> onCreateLoader(int id, Bundle args) {
    return new AsyncTaskLoader<Bitmap>(this) {

        private ContentObserver mContentObserver;

        private Bitmap mImage;

        @Override
        protected void onStartLoading() {
            if (mImage != null) {
                deliverResult(mImage);
            }
            if (mContentObserver == null) {
                mContentObserver = new ContentObserver(null) {

                    @Override
                    public void onChange(boolean selfChange) {
                        onContentChanged();
                    }
                };
                getContentResolver().registerContentObserver(MuzeiContract.Artwork.CONTENT_URI, true, mContentObserver);
            }
            forceLoad();
        }

        @Override
        public Bitmap loadInBackground() {
            try {
                mArtwork = MuzeiContract.Artwork.getCurrentArtwork(FullScreenActivity.this);
                mImage = MuzeiContract.Artwork.getCurrentArtworkBitmap(FullScreenActivity.this);
                return mImage;
            } catch (FileNotFoundException e) {
                Log.e(TAG, "Error getting artwork", e);
                return null;
            }
        }

        @Override
        protected void onReset() {
            super.onReset();
            mImage = null;
            if (mContentObserver != null) {
                getContentResolver().unregisterContentObserver(mContentObserver);
            }
        }
    };
}