Android 监听home键，及软键盘的弹起和关闭

程序中需要监听Home键，普通的onKeyListener()看来是行不通了，这里有新的解决办法。

http://www.linuxidc.com/Linux/2012-12/76202.htm

http://blog.csdn.net/com360/article/details/6663586

http://www.cnblogs.com/carmanloneliness/archive/2012/07/30/2615823.html

http://www.eoeandroid.com/forum.php?mod=viewthread&tid=172606&page=1#pid1471050