How to use UIScreenEdgePanGestureRecognizer, via Swift Code

implement in UIViewController

I had implemented the screen edge swipe with using UIScreenEdgePanGestureRecognizer, without Storyboard.

We need to add edgePan to ViewController.view. if you want to handle the acton, you have to use #selector.

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

class ViewController: UIViewController {       private let closer = SwipeEdgeCloser()           override func viewDidLoad() {         super.viewDidLoad()           let edgePan = UIScreenEdgePanGestureRecognizer(target: self, action: #selector(handleScreenEdgeSwiped))         edgePan.edges = .left         view.addGestureRecognizer(edgePan)     }       @objc func handleScreenEdgeSwiped(_ recognizer: UIScreenEdgePanGestureRecognizer) {         if recognizer.state == .recognized {             print("Screen edge swiped!")         }     } }

new class implemented Edge Swipe Gesture

If you do not like "fat UIViewController", you should new class implemented Edge Swipe Gesture.

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

class ViewController: UIViewController {       private let closer = SwipeLeftEdgePanGesture()           override func viewDidLoad() {         super.viewDidLoad()         view.addGestureRecognizer(closer.panGesture)     } }   final class SwipeLeftEdgePanGesture {     let panGesture: UIScreenEdgePanGestureRecognizer           init() {         panGesture = UIScreenEdgePanGestureRecognizer()         panGesture.edges = .left         panGesture.addTarget(self, action: #selector(SwipeLeftEdgePanGesture.screenEdgeSwiped))     }           @objc private func screenEdgeSwiped(_ recognizer: UIScreenEdgePanGestureRecognizer) {         if recognizer.state == .recognized {             print("SwipeLeftEdgePanGesture: Screen edge swiped!")         }     } }