软件更新功能

转载：

?

http://blog.csdn.net/android_tutor/article/details/7015986?reload

?

http://daosrc.com/?p=439

?

http://www.eoeandroid.com/forum.php?mod=viewthread&tid=249108

?

http://blog.csdn.net/encienqi/article/details/8291810