ActivityGroup中出现的Unable to add window -- token

08-29 15:46:14.930: E/AndroidRuntime(28804): android.view.WindowManager$BadTokenException: Unable to add window -- token android.app.LocalActivityManager$LocalActivityRecord@40603cc0 is not valid; is your activity running?

它不知道是那个Activity了，需要调用getParent()

参考：http://gundumw100.iteye.com/blog/1128041

这个是我在TabActivity中又装了个ActivityGroup，才出现这种情况

但我直接用ActivityGroup就没有这种问题

http://blog.csdn.net/hillpool/article/details/7560600