Android 图片加载 —— ImageLoader

大神博文：
http://blog.csdn.net/xiaanming/article/details/26810303

最佳的简单加载网络图片：

• 活动中加载：

final ImageView mImageView = (ImageView) findViewById(R.id.image); 
        String imageUrl = "https://lh6.googleusercontent.com/-55osAWw3x0Q/URquUtcFr5I/AAAAAAAAAbs/rWlj1RUKrYI/s1024/A%252520Photographer.jpg"; 

        //显示图片的配置  
        DisplayImageOptions options = new DisplayImageOptions.Builder()  
                .showImageOnLoading(R.drawable.ic_stub)  
                .showImageOnFail(R.drawable.ic_error)  
                .cacheInMemory(true)  
                .cacheOnDisk(true)  
                .bitmapConfig(Bitmap.Config.RGB_565)  
                .build(); 

        ImageLoader.getInstance().displayImage(imageUrl, mImageView, options);