等到用户触摸屏幕。 Swift

Question

发生某些事情后，我制作了一个带有标签的视图，

let myView = UIView(frame: CGRect(x: 100, y: 100, width: 100, height: 100))
let label = UILabel(frame: CGRect(x:0,y:0,width: 100, height: 100))
myView.addSubview(lebel)
self.view.addSubview(myView)
myView.alpha = 0
UIView.animate(withDuration: 0.5, animations: {
        myView.alpha = 1
    })

现在我要你等到在屏幕上进行点击，然后

UIView.animate(withDuration: 0.5, animations: {
            muView.alpha = 0
        }, completion: { (bool) in
            myView.removeFromSuperview()
    })

如何才能等到触摸屏幕？

Answer 1

只需将点击手势添加到您的视图中

在viewDidload

 let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleTapGesture(_:)))
    self.view.addGestureRecognizer(tapGesture)

处理 TapGesture

 @IBAction func handleTapGesture(_ recognizer: UITapGestureRecognizer) {

      UIView.animate(withDuration: 0.5, animations: {
            muView.alpha = 0
           }, completion: { (bool) in
            myView.removeFromSuperview()
       })

    }

Answer 2

除了 Abdelahad 的回答之外，您还应该将 let myView 声明为 property，以便在 @IBAction func handleTapGesture(_ recognizer: UITapGestureRecognizer) {} 中使用它。因此，新代码如下：

 @IBAction func handleTapGesture(_ recognizer: UITapGestureRecognizer) {

  UIView.animate(withDuration: 0.5, animations: {
        self.myView.alpha = 0
       }, completion: { (bool) in
        self.myView.removeFromSuperview()
   })
}

最后补充一下，我发现你的代码有点错误。 muView 错误，myView 正确。

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