Swipe gesture in Swift 3

Question

Im trying to get a UISwipeGestureRecognizer to work in Swift 3, the default swipe right is working correctly though not up down or left.

I have tried it by control dragging an Action

@IBAction func hole(_ recognizer: UISwipeGestureRecognizer) {     if (recognizer.direction == UISwipeGestureRecognizerDirection.left)     {         print("left")     }else if recognizer.direction == .right {         print("right")     }else {         print("other")     } } 

And, in ViewDidLoad

//gesture recognisers let swipeRight = UISwipeGestureRecognizer(target: self, action: "holeSwiped:") swipeRight.direction = UISwipeGestureRecognizerDirection.right self.view.addGestureRecognizer(swipeRight)  let swipeLeft = UISwipeGestureRecognizer(target: self, action: "holeSwiped:") swipeLeft.direction = UISwipeGestureRecognizerDirection.left self.view.addGestureRecognizer(swipeLeft) 

to my method

func holeSwiped(gesture: UISwipeGestureRecognizer) {     if let swipeGesture = gesture as? UISwipeGestureRecognizer{         switch swipeGesture.direction {         case UISwipeGestureRecognizerDirection.right:             print("right swipe")         case UISwipeGestureRecognizerDirection.left:             print("left swipe")         default:             print("other swipe")         }     } } 

Now, none of the swipes are working except the default right. Any ideas?

Answer 1

Step 1: Add swipe Gesture(s) in viewDidLoad() method.

override func viewDidLoad() {     super.viewDidLoad()              let swipeLeft = UISwipeGestureRecognizer(target: self, action: #selector(handleGesture))     swipeLeft.direction = .left     self.view.addGestureRecognizer(swipeLeft)              let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(handleGesture))     swipeRight.direction = .right     self.view.addGestureRecognizer(swipeRight)              let swipeUp = UISwipeGestureRecognizer(target: self, action: #selector(handleGesture))     swipeUp.direction = .up     self.view.addGestureRecognizer(swipeUp)              let swipeDown = UISwipeGestureRecognizer(target: self, action: #selector(handleGesture))     swipeDown.direction = .down     self.view.addGestureRecognizer(swipeDown) } 

Step 2: Check the gesture detection in handleGesture() method

func handleGesture(gesture: UISwipeGestureRecognizer) {    if gesture.direction == .right {         print("Swipe Right")    }    else if gesture.direction == .left {         print("Swipe Left")    }    else if gesture.direction == .up {         print("Swipe Up")    }    else if gesture.direction == .down {         print("Swipe Down")    } } 

I hope this will help someone.

UPDATE:

You need to use @objc to call your 'Selector' method for latest swift versions. ie,

@objc func handleGesture(gesture: UISwipeGestureRecognizer) -> Void {   .   .   . }