Volley

http://arnab.ch/blog/2013/08/asynchronous-http-requests-in-android-using-volley/

http://blog.csdn.net/ttdevs/article/details/19200305

https://developer.android.com/training/volley/simple.html 

http://blog.csdn.net/jxxfzgy/article/details/44022435

http://www.trinea.cn/android/android-listview-display-error-image-when-scroll/

ImageCache

http://www.trinea.cn/android/android-imagecache/