UIGestureTap 关闭视图

Question

我正在尝试在自定义视图上启用 UIGestureTap。我有一个视图控制器，在那个视图控制器中，当我按下一个按钮时，会弹出一个自定义视图。

var transparentBackground = UIView()
       @IBAction func UserViewImage(_ sender: UIButton) -> Void {
     self.transparentBackground = UIView(frame: UIScreen.main.bounds)
            self.transparentBackground.backgroundColor = UIColor(white: 0.0, alpha: 0.4)
            UIApplication.shared.keyWindow!.addSubview(self.transparentBackground)
            self.opaqueView = self.setupOpaqueView()
            self.transparentBackground.addSubview(opaqueView)
            UIApplication.shared.keyWindow!.bringSubview(toFront: self.transparentBackground)
            self.view.bringSubview(toFront: transparentBackground)
       }

我希望能够点击透明背景视图并将其关闭。所以我有一个名为 removeAnimate()

的关闭函数

 func removeAnimate()
    {
        UIView.animate(withDuration: 0.25, animations: {
            self.transparentBackground.transform = CGAffineTransform(scaleX: 1.3, y: 1.3)
            self.transparentBackground.alpha = 0.0;

        }, completion:{(finished : Bool)  in
            if (finished)
            {
                self.transparentBackground.removeFromSuperview()
            }
        });
    }

因此，在 viewdidload 中我启用了 UITapGesture：

let gestureRecognizer = UITapGestureRecognizer(target: self, action:  #selector(removeAnimate))
            self.transparentBackground.addGestureRecognizer(gestureRecognizer)
            self.transparentBackground.isUserInteractionEnabled = true

我知道 removeAnimate 函数有效，因为我在 transparentBackground 视图中的一个按钮上使用了它并且它运行良好。但是当我点击 transparentBackground 视图时，它并没有关闭，我不确定我做错了什么

  func setupOpaqueView() -> UIView{


        let mainView = UIView(frame: CGRect(x: 16, y: 132, width: Int(UIScreen.main.bounds.width-32), height: 403))
        mainView.backgroundColor = UIColor.clear
        mainView.layer.cornerRadius = 6

        self.imageView = UIImageView(frame: CGRect(x: 29, y: 18, width: 274, height: 350))

        mainView.addSubview(OKbutton)
        mainView.addSubview(self.imageView)
        OKbutton.addTarget(self, action:  #selector(ThirdWheelViewController.handleOKButtonTapped(_:)), for: .touchUpInside)

        return mainView

    }

Answer 1

这是一个示例，希望对您有所帮助：

首先创建一个变量：

var customView:UIView!

这将是我们添加自定义视图的函数：

@IBAction func customAction(_ sender: AnyObject) {

    self.customView = UIView.init(frame: CGRect.init(x: self.view.bounds.width / 2, y: self.view.bounds.height / 2, width: 100, height: 100))
    self.customView.backgroundColor = UIColor.red
    self.view.addSubview(self.customView)

    let tap = UITapGestureRecognizer.init(target: self, action: #selector(self.removeFromSuperView))
    tap.numberOfTapsRequired = 1
    self.customView.addGestureRecognizer(tap)
}

最后：

 func removeFromSuperView() {

    self.customView.alpha = 1.0
    self.customView.transform = .identity

    UIView.animate(withDuration: 0.3, animations: {

        self.customView.alpha = 0.0
        self.customView.transform = .init(scaleX: 1.5, y: 1.5)

        }) { (finished) in

            if !finished {

            } else {
              self.customView.removeFromSuperview()
            }

    }

}

UIGestureTap 关闭视图

UIGestureTap to dismiss view

uigesturerecognizer

ios

swift