How do I set up an UIScreenEdgePanGestureRecognizer using Interface Builder?

Question

I can\'t get UIScreenEdgePanGestureRecognizer to work when I create when I add it to my view controller using Interface Builder, so I\'m asking here to establish wh

Answer 1

It can be considered as a bug, but actually, here is something useful:

"After creating a screen edge pan gesture recognizer, assign an appropriate value to the edges property before attaching the gesture recognizer to your view."

https://developer.apple.com/library/prerelease/ios/documentation/UIKit/Reference/UIScreenEdgePanGestureRecognizer_class/index.html

This requirement only apply to UIScreenEdgePanGestureRecognizer, so I think that's why Xcode make it wrong, it must be implemented as the normal sequence, alloc->init->attach->set value. It will work to all other GestureRecongnizer but not UIScreenEdgePanGestureRecognizer.