Android 'Unable to add window — token null is not for an application' exception

http://stackoverflow.com/questions/2634991/android-1-6-android-view-windowmanagerbadtokenexception-unable-to-add-window

http://stackoverflow.com/questions/7933206/android-unable-to-add-window-token-null-is-not-for-an-application-exception

I'm guessing - are you trying to create Dialog with an application context? Something like this:

new Dialog(getApplicationContext());

This is wrong. You need to use an Activity context.