UniversalImageLoader 学习

http://www.tuicool.com/articles/zIRNN3z

http://www.cnblogs.com/avenwu/archive/2013/05/03/3058468.html

http://blog.csdn.net/hhhccckkk/article/details/8898651

http://blog.csdn.net/w8320273/article/details/9072763