How to recognize swipe in all 4 directions

Question

I need to use swipe to recognize swipe gesture down and then right. But on swift UISwipeGestureRecognizer has predeterminate Right direction.. And I don't know how make this for use other directions..

Answer 1

You need to have one UISwipeGestureRecognizer for each direction. It's a little weird because the UISwipeGestureRecognizer.direction property is an options-style bit mask, but each recognizer can only handle one direction. You can send them all to the same handler if you want, and sort it out there, or send them to different handlers. Here's one implementation:

override func viewDidLoad() {     super.viewDidLoad()      let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(respondToSwipeGesture))     swipeRight.direction = .right     self.view.addGestureRecognizer(swipeRight)      let swipeDown = UISwipeGestureRecognizer(target: self, action: #selector(respondToSwipeGesture))     swipeDown.direction = .down     self.view.addGestureRecognizer(swipeDown) }  @objc func respondToSwipeGesture(gesture: UIGestureRecognizer) {      if let swipeGesture = gesture as? UISwipeGestureRecognizer {          switch swipeGesture.direction {         case .right:             print("Swiped right")         case .down:             print("Swiped down")         case .left:             print("Swiped left")         case .up:             print("Swiped up")         default:             break         }     } } 

Swift 3:

override func viewDidLoad() {     super.viewDidLoad()      let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(self.respondToSwipeGesture))     swipeRight.direction = UISwipeGestureRecognizerDirection.right     self.view.addGestureRecognizer(swipeRight)      let swipeDown = UISwipeGestureRecognizer(target: self, action: #selector(self.respondToSwipeGesture))     swipeDown.direction = UISwipeGestureRecognizerDirection.down     self.view.addGestureRecognizer(swipeDown) }  func respondToSwipeGesture(gesture: UIGestureRecognizer) {     if let swipeGesture = gesture as? UISwipeGestureRecognizer {         switch swipeGesture.direction {         case UISwipeGestureRecognizerDirection.right:             print("Swiped right")         case UISwipeGestureRecognizerDirection.down:             print("Swiped down")         case UISwipeGestureRecognizerDirection.left:             print("Swiped left")         case UISwipeGestureRecognizerDirection.up:             print("Swiped up")         default:             break         }     } } 

Answer 2

I just felt like contributing this, looks more elegant in the end:

func addSwipe() {     let directions: [UISwipeGestureRecognizerDirection] = [.Right, .Left, .Up, .Down]     for direction in directions {         let gesture = UISwipeGestureRecognizer(target: self, action: Selector("handleSwipe:"))         gesture.direction = direction         self.addGestureRecognizer(gesture)     } }  func handleSwipe(sender: UISwipeGestureRecognizer) {     print(sender.direction) }