小编use*_*962的帖子

我试图让UISwipeGestureRecognizer在Swift 3中工作,默认滑动右边工作正常但不向上或向左.

我通过控制拖动Action来尝试它

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

而且,在ViewDidLoad中

//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)

我的方法

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")
        }
    } …