图片

File file = new File(Environment.getExternalStorageDirectory().getPath()+"zha");ImageLoaderConfiguration  builder = new ImageLoaderConfiguration.Builder(this)        .memoryCacheExtraOptions(200,200)        .memoryCacheSize(20*1024*1024)        .diskCacheFileNameGenerator(new Md5FileNameGenerator())        .diskCache(new UnlimitedDiskCache(file))        .build();ImageLoader.getInstance().init(builder);

dos = new DisplayImageOptions.Builder()
.cacheInMemory(true).cacheOnDisk(true)
.showImageForEmptyUri(R.drawable.add_channels_close_small)
.displayer(new CircleBitmapDisplayer()).build();