Android 1.6: “android.view.WindowManager$BadTokenException: Unable to add window — token null is not for an application”

Question

I\'m trying to open a dialog window, but every time I try to open it it throws this exception:

Uncaught handler: thread main exiting due to uncaught exceptio         


        

Answer 1

Another solution is to set the window type to a system dialog:

dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);

This requires the SYSTEM_ALERT_WINDOW permission:

As the docs say:

Very few applications should use this permission; these windows are intended for system-level interaction with the user.

This is a solution you should only use if you require a dialog that's not attached to an activity.