content: 
  /*
   * The MIT License (MIT)
   *
   * Copyright (c) 2015 malin
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  package com.malin.rxjava.utils;
  
  
  import android.graphics.Bitmap;
  import android.graphics.drawable.BitmapDrawable;
  import android.graphics.drawable.Drawable;
  import android.widget.ImageView;
  
  /**
   * 类描述:回收ImageView占用的图像内存
   * 创建人:malin.myemail@gmail.com
   * 创建时间:15-11-21.
   * 参考内容:http://blog.csdn.net/intbird/article/details/19905549
   */
  
  public class RecycleBitmap {
      private RecycleBitmap() {
      }
  
      /**
       * 回收ImageView占用的图像内存;
       *
       * @param imageView
       */
      public static void recycleImageView(ImageView imageView) {
          if (imageView == null) {
              return;
          }
  
          Drawable drawable = imageView.getDrawable();
          if (drawable != null && drawable instanceof BitmapDrawable) {
              BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;
              Bitmap bitmap = bitmapDrawable.getBitmap();
              if (bitmap != null && !bitmap.isRecycled()) {
                  bitmap.recycle();
                  bitmap = null;
                  imageView.setImageBitmap(null);
              }
          }
      }
  }