com.google.android.apps.santatracker.util.LruImageCache.java Source code

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Here is the source code for com.google.android.apps.santatracker.util.LruImageCache.java

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/*
 * Copyright (C) 2015 Google Inc. All Rights Reserved.
 *
 * 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.google.android.apps.santatracker.util;

import android.graphics.Bitmap;
import android.support.v4.util.LruCache;

import com.android.volley.toolbox.ImageLoader;

/**
 * LRU cache implementation of a Volley library image cache.
 */
public class LruImageCache implements ImageLoader.ImageCache {

    private LruCache<String, Bitmap> mMemoryCache;

    public LruImageCache() {
        // Naive calculation of available memory: Use 1/8th of memory for cache
        int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
        int cacheSize = maxMemory / 8;
        mMemoryCache = new LruCache<String, Bitmap>(cacheSize) {
            @Override
            protected int sizeOf(String key, Bitmap bitmap) {
                return bitmap.getByteCount() / 1024;
            }
        };
    }

    @Override
    public Bitmap getBitmap(String url) {
        return mMemoryCache.get(url);
    }

    @Override
    public void putBitmap(String url, Bitmap bitmap) {
        mMemoryCache.put(url, bitmap);
    }

}