Back to project page webimageloader.
The source code is released under:
Apache License
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/* * Copyright (C) 2011 Alexander Blom/*from w ww . ja v a 2s . c o m*/ * * 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.webimageloader.sample; import android.content.Context; import android.support.v4.content.AsyncTaskLoader; /** * Loader which extends AsyncTaskLoaders and handles caveats as pointed out in * http://code.google.com/p/android/issues/detail?id=14944. * <p/> * Based on CursorLoader.java in the Fragment compatibility package * * @param <D> data type * @author Alexander Blom (me@alexanderblom.se) */ public abstract class AsyncLoader<D> extends AsyncTaskLoader<D> { private D data; public AsyncLoader(final Context context) { super(context); } @Override public void deliverResult(final D data) { if (isReset()) // An async query came in while the loader is stopped return; this.data = data; super.deliverResult(data); } @Override protected void onStartLoading() { if (data != null) deliverResult(data); if (takeContentChanged() || data == null) forceLoad(); } @Override protected void onStopLoading() { // Attempt to cancel the current load task if possible. cancelLoad(); } @Override protected void onReset() { super.onReset(); // Ensure the loader is stopped onStopLoading(); data = null; } }