A handy AsyncTaskLoader that contains common caching functionality.

CachedLoader.java

import android.content.Context;
import android.support.v4.content.AsyncTaskLoader;

public abstract class CachedLoader<D> extends AsyncTaskLoader<D> {

	private D mResult;

	public CachedLoader(Context context) {
		super(context);
	}

	@Override
	protected void onStartLoading() {
		super.onStartLoading();
		if (mResult != null) {
			deliverResult(mResult);
		}
		if (takeContentChanged() || mResult == null) {
			forceLoad();
		}

	}

	@Override
	public void deliverResult(D data) {
		mResult = data;
		if (isStarted()) {
			super.deliverResult(data);
		}
	}

	@Override
	protected void onStopLoading() {
		super.onStopLoading();
		cancelLoad();
	}

	@Override
	protected void onReset() {
		super.onReset();
		onStopLoading();
		mResult = null;
	}

}