BitmapCache.java

/*
 * Copyright 2014 Niek Haarman
 *
 * 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 typical_if.android.util;

import android.graphics.Bitmap;
import android.util.LruCache;

public class BitmapCache extends LruCache<Integer, Bitmap> {

    private static final int KILO = 1024;
    private static final int MEMORY_FACTOR = 2 * KILO;

    public BitmapCache() {
        super((int) (Runtime.getRuntime().maxMemory() / MEMORY_FACTOR));
    }

    @Override
    protected int sizeOf(final Integer key, final Bitmap value) {
        return value.getRowBytes() * value.getHeight() / KILO;
    }
}