com.xxjwd.chat.util.ImageCache.java Source code

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Here is the source code for com.xxjwd.chat.util.ImageCache.java

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/**
 * Copyright (C) 2013-2014 EaseMob Technologies. 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.xxjwd.chat.util;

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

public class ImageCache {
   
   private ImageCache() {
      // use 1/8 of available heap size
      cache = new LruCache<String, Bitmap>((int) (Runtime.getRuntime().maxMemory() / 8)) {
              @Override
              protected int sizeOf(String key, Bitmap value) {
                  return value.getRowBytes() * value.getHeight();
              }
          };
   }

   private static ImageCache imageCache = null;

   public static synchronized ImageCache getInstance() {
      if (imageCache == null) {
         imageCache = new ImageCache();
      }
      return imageCache;

   }
   private LruCache<String, Bitmap> cache = null;
   
   /**
    * put bitmap to image cache
    * @param key
    * @param value
    * @return  the puts bitmap
    */
   public Bitmap put(String key, Bitmap value){
      return cache.put(key, value);
   }
   
   /**
    * return the bitmap
    * @param key
    * @return
    */
   public Bitmap get(String key){
      return cache.get(key);
   }
}