ProgressBar教程http://blog.csdn.net/Android_Tutor/article/details/5695170DB: http://mobile.51cto.co
ProgressBar教程
http://blog.csdn.net/Android_Tutor/article/details/5695170
DB: http://mobile.51cto.com/hot-299743.htm
http://disanji.net/2011/04/03/android-use-simplecursoradapter/