com.granita.tasks.groupings.cursorloaders.EmptyCursorLoaderFactory.java Source code

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Here is the source code for com.granita.tasks.groupings.cursorloaders.EmptyCursorLoaderFactory.java

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/*
 * Copyright (C) 2013 Marten Gajda <marten@dmfs.org>
 *
 * 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.granita.tasks.groupings.cursorloaders;

import android.content.Context;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.support.v4.content.CursorLoader;

/**
 * A simple cursor loader factory that returns {@link CursorLoader}s that return empty cursors. This is meant as a hack to be able to return <code>null</code>
 * values from onCreateLoader.
 * 
 * @author Marten Gajda <marten@dmfs.org>
 */
public class EmptyCursorLoaderFactory extends CustomCursorLoader {
    public EmptyCursorLoaderFactory(Context context, String[] projection) {
        super(context, new AbstractCustomCursorFactory(projection) {

            @Override
            public Cursor getCursor() {
                return new MatrixCursor(mProjection);
            }
        });
    }

}