ViewController 中主 UIView 内部的 UIView 的位置？

Question

我正在用 Swift 做一个应用程序项目，我有一个 UIView 在主视图中移动（默认情况下它在 ViewController 中的那个）。

我想知道按下按钮时 UIView 的确切位置（X 和 Y）。

我尝试过这样的事情，但对我不起作用：

let X = pointView.frame.origin.x + pointView.frame.origin.x;
let Y = pointView.frame.origin.y + pointView.frame.origin.y;

或

let frame = self.view.convertRect(self.view.frame, fromView:pointView)

我现在的代码：

    @IBAction func pressButton(sender: AnyObject) {

    }

    override func viewDidLoad() {
        super.viewDidLoad()

        let screenSize: CGRect = UIScreen.mainScreen().bounds
        let screenWidth = screenSize.width
        let screenHeight = screenSize.height

        UIView.animateKeyframesWithDuration(4, delay: 0, options: UIViewKeyframeAnimationOptions.Repeat, animations: { () -> Void in

            UIView.addKeyframeWithRelativeStartTime(0, relativeDuration: 1.5/4.0, animations: { () -> Void in
                //1
                self.pointView.center = CGPointMake(2, screenHeight-2)
                //2
            })
            UIView.addKeyframeWithRelativeStartTime(1.5/4, relativeDuration: 1/4, animations: { () -> Void in
                self.pointView.center = CGPointMake(screenWidth-2, screenHeight-2)
            })
            UIView.addKeyframeWithRelativeStartTime(2.5/4, relativeDuration: 1.5/4.0, animations: { () -> Void in
                self.pointView.center = CGPointMake(screenWidth-2, 1)
            })
            //3
        }, completion: nil)
        //4
    }

Answer 1

然后试试这个：

let frame = pointView.superview?.convertRect(pointView.frame, toView: nil)

有时视图需要他的 superView 来找到它的坐标

动画完成后放置

   UIView.animateWithDuration(1, animations: { () -> Void in
        //animation code
    }) { (success) -> Void in
        let frame = self.pointView.superview?.convertRect(self.pointView.frame, toView: nil)
    }