gson, http ,post，circle image ,Viewpager

gson基本：

http://www.cnblogs.com/chenlhuaf/archive/2011/05/01/gson_test.html

http://www.cnblogs.com/haippy/archive/2012/05/20/2509329.html

post  json :

http://www.blogjava.net/Green-nut/articles/346789.html

http://navylee.iteye.com/blog/1683223

这个好

http://blog.sina.com.cn/s/blog_73c5cfbe0101au09.html

android json xutils :

http://blog.csdn.net/onlyonecoder/article/details/14223017

http://blog.csdn.net/tianyitianyi1/article/details/8302014

circle image :

http://blog.csdn.net/onlyonecoder/article/details/10063169

Viewpager :

http://blog.csdn.net/onlyonecoder/article/details/8518148