安卓知识体系
http://blog.csdn.net/u011240877/article/details/52034877
安卓课程体系
http://www.yiibai.com/android/android_event_handling.html
https://wenku.baidu.com/view/f3ad3299cf2f0066f5335a8102d276a2002960a1.html?re=view
http://www.cnblogs.com/pangblog/p/3285769.html
http://news.hiapk.com/internet/s597526b2655d.html