What is this error, and why does it happen?
05-17 18:24:57.069: ERROR/WindowManager(18850): Activity com.mypkg.myP has leaked window com.android.internal.pol
I recently faced the same issue.
The reason behind this issue is that the activity being closed before the dialog is dismissed. There are various reasons for the above to happen. The ones mentioned in the posts above are also correct.
I got into a situation, because in the thread, I was calling a function which was throwing exception. Because of which the window was being dismissed and hence the exception.