/*
* Copyright 2013 Chris Banes
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.zhaojian.jolly.tasks;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.database.Cursor;
import android.os.AsyncTask;
import com.zhaojian.jolly.model.MediaStoreBucket;
import com.zhaojian.jolly.utils.MediaStoreCursorHelper;
public class MediaStoreBucketsAsyncTask extends AsyncTask<Void, Void, List<MediaStoreBucket>> {
public static interface MediaStoreBucketsResultListener {
public void onBucketsLoaded(List<MediaStoreBucket> buckets);
}
private final WeakReference<Context> mContext;
private final WeakReference<MediaStoreBucketsResultListener> mListener;
public static void execute(Context context, MediaStoreBucketsResultListener listener) {
new MediaStoreBucketsAsyncTask(context, listener).execute();
}
private MediaStoreBucketsAsyncTask(Context context, MediaStoreBucketsResultListener listener) {
mContext = new WeakReference<Context>(context);
mListener = new WeakReference<MediaStoreBucketsResultListener>(listener);
}
@Override
protected List<MediaStoreBucket> doInBackground(Void... params) {
ArrayList<MediaStoreBucket> result = null;
Context context = mContext.get();
if (null != context) {
// Add 'All Photos' item
result = new ArrayList<MediaStoreBucket>();
result.add(MediaStoreBucket.getAllPhotosBucket(context));
Cursor cursor = MediaStoreCursorHelper.openPhotosCursor(context,
MediaStoreCursorHelper.MEDIA_STORE_CONTENT_URI);
if (null != cursor) {
MediaStoreCursorHelper.photosCursorToBucketList(cursor, result);
cursor.close();
}
}else{
}
return result;
}
@Override
protected void onPostExecute(List<MediaStoreBucket> result) {
super.onPostExecute(result);
MediaStoreBucketsResultListener listener = mListener.get();
if (null != listener) {
listener.onBucketsLoaded(result);
}
}
}