http://justwyy.iteye.com/blog/1200391 html
http://www.cnblogs.com/yejiurui/archive/2013/03/28/2986083.html android
Activity作僞彈窗 實現 在系統其餘應用上面彈框。ui
http://www.cnblogs.com/winxiang/archive/2012/11/20/2778729.htmlspa