在Swift中获取UIPanGestureRecognizer的起点和终点 [英] Get the start point and end point of the UIPanGestureRecognizer in Swift

问题描述

我在项目中使用UIPanGestureRecognizer，我想确定起点和终点.

I'm using UIPanGestureRecognizer on a project, and I want to take the starting point and the end point.

我尝试为touchesBegin做，但是没有得到满足我需要的代码.

I tried to do for touchesBegin, but did not get a code that does what I need.

如何获取UIPanGestureRecognizer的起点和终点?

How can I get the start point and end point of the UIPanGestureRecognizer?

推荐答案

对于您的情况，您可能希望将函数内部的代码包含在panGesture的IBAction中.在这里，我创建了一个视图，但是否则，您将只引用self.view而不是view.

For your case, you might want to include the code inside my function into your IBAction for the panGesture. Here I've created a view, but otherwise you would just be referring to self.view instead of view.

var view = UIView()

func panGestureMoveAround(gesture: UIPanGestureRecognizer) {

 var locationOfBeganTap: CGPoint

 var locationOfEndTap: CGPoint

 if gesture.state == UIGestureRecognizerState.Began {

     locationOfBeganTap = gesture.locationInView(view)

 } else if gesture.state == UIGestureRecognizerState.Ended {

    locationOfEndTap = gesture.locationInView(view)
 }

}

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