6.android学习网站：
http://wear.techbrood.com/index.html
http://stackoverflow.com/
7.Android 系统属性SystemProperty分析
http://www.cnblogs.com/bastard/archive/2012/10/11/2720314.html
8.ListView子控件获取焦点
http://www.cnblogs.com/yexiubiao/archive/2013/02/24/2924324.html
9.打开和关闭以太网
http://www.eoeandroid.com/thread-305231-1-1.html