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

I have tried it in Xcode 7.0 Beta 4 (7A165t) and it's still a bug. Adding the Screen Edge Pan Gesture Recognizer via Interface Builder doesn't call the referenced IBAction, however adding it programmatically like this works fine:

class ViewController: UIViewController, UIGestureRecognizerDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()

        let edgeGestureRecognizer = UIScreenEdgePanGestureRecognizer(target: self, action: "userSwipedFromEdge:")
        edgeGestureRecognizer.edges = UIRectEdge.Left
        edgeGestureRecognizer.delegate = self
        self.view.addGestureRecognizer(edgeGestureRecognizer)
    }

    func userSwipedFromEdge(sender: UIScreenEdgePanGestureRecognizer) {
        if sender.edges == UIRectEdge.Left {
            print("It works!")
        }
    }
}

Hint: Don't forget to add the UIGestureRecognizerDelegate protocol to your class. Otherwise you'll get an error at edgeGestureRecognizer.delegate = self