【Android】ProgressBar

http://www.cnblogs.com/wangying222/p/5304990.html

http://www.cnblogs.com/plokmju/p/android_ProgressBar.html

http://www.cnblogs.com/3dant/archive/2011/04/25/2026776.html

http://blog.csdn.net/qq_27102463/article/details/51612999