unexpected nil window in _UIApplicationHandleEventFromQueueEvent, _windowServerHitTestWindow

Question

I am trying to set up an edge swipe gesture in iOS 8 on iPad but getting and error that seems like a bug.

I have the following code:

    UIScreenEdge         


        

Answer 1

One possible fix is to remove or comment out code for hiding status bar if you have that. I was pulling my hair to solve it, and I could only reproduce it on my root view. It appears that if you hide the status bar you cannot drag down today widgets/notification center (you can with some effort).

/* <- add this
- (BOOL)prefersStatusBarHidden
{
   return YES;
}
add this -> */