Swift未触发触碰如果刷卡，则开始触碰

您好，我有一个swift应用程序，每次触摸都开始调用一个函数，但是如果用户正在刷卡，我不希望触摸开始被调用。我怎样才能避免这种情况

接触开始了：

override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
//function call
}

---

另外，我不想做结束的触摸，因为这会增加延迟，我不能让你的UIViewController的view成为一个自定义类并在那里处理这些触摸-它们应该以你尝试的方式接收，但只能在UIView类本身中接收。

如果你想从触摸中分离滑动，你可以用delaysTouchesBegan轻松地完成方法，例如：

        let swipeRight:UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: Selector("swipedRight:"))
        swipeRight.direction = .Right
        swipeRight.cancelsTouchesInView = true
        swipeRight.delaysTouchesBegan = true
        view.addGestureRecognizer(swipeRight)


        let swipeLeft:UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: Selector("swipedLeft:"))
        swipeLeft.direction = .Left
        swipeLeft.cancelsTouchesInView = true
        swipeLeft.delaysTouchesBegan = true
        view.addGestureRecognizer(swipeLeft)


        let swipeUp:UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: Selector("swipedUp:"))
        swipeUp.direction = .Up
        swipeUp.cancelsTouchesInView = true
        swipeUp.delaysTouchesBegan = true
        view.addGestureRecognizer(swipeUp)


        let swipeDown:UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: Selector("swipedDown:"))
        swipeDown.direction = .Down
        swipeDown.cancelsTouchesInView = true
        swipeDown.delaysTouchesBegan = true
        view.addGestureRecognizer(swipeDown)

在viewDidLoad或didMoveToView中（如果您在spritekit场景中）

并分别制定了以下方法：

func swipedRight(sender:UISwipeGestureRecognizer){
   print("swiped right")
}

func swipedLeft(sender:UISwipeGestureRecognizer){
   print("swiped left")
}

func swipedUp(sender:UISwipeGestureRecognizer){
   print("swiped up")
}

func swipedDown(sender:UISwipeGestureRecognizer){
   print("swiped down")
}

然后，您可以使用官方委托方法控制触摸，如：

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
...// handle your touches..
}

覆盖函数触摸开始（触摸：设置，withEvent事件：UIEvent？）{
…//处理好你的触摸。。
}

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
...// handle your touches..
}