Ios swift can'；t单击位于多个子视图内的UI按钮

当我按下

箭头按钮时，我没有看到，甚至
打印（“toggleWhiteMenu pressed”）
也没有在控制台中打印？我搜索了其他类似的问题，但答案似乎没有帮助

 let card: UIView = {
        let tsl = UIView()
        tsl.backgroundColor = UIColor.black
        tsl.alpha = 0.9
        return tsl
    }()


let yellowCard: UIView = {
    let tsl = UIView()
    tsl.backgroundColor = UIColor.yellow
    //tsl.alpha = 1
     tsl.isUserInteractionEnabled = false
    return tsl
}()



  lazy var arrowButton: UIButton = {
    let button = UIButton(type: .system)

    button.setImage(#imageLiteral(resourceName: "down arrow"), for: .normal)
    button.tintColor = UIColor.black
    button.titleLabel?.font = UIFont.boldSystemFont(ofSize: 14)
    button.addTarget(self, action: #selector(self.toggleWhiteMenu), for: .touchUpInside)
    return button
}()


func toggleWhiteMenu() {
    print("toggleWhiteMenu pressed")
    UIView.animate(withDuration: 1, animations: {

        self.whiteMenu.transform = CGAffineTransform(scaleX: 11, y: 11)
    }) { (true) in
        print("really sick")
    }
}


let whiteMenu: UIView = {
    let tsl = UIView()
    tsl.backgroundColor = UIColor.white
    tsl.alpha = 1
    tsl.isUserInteractionEnabled = false
    return tsl
}()



    let containerView: UIView = {
        let v = UIView()
        v.translatesAutoresizingMaskIntoConstraints = false
        v.backgroundColor = .yellow
        v.isUserInteractionEnabled = false
        return v
    }()

    let scrollView: UIScrollView = {
        let v = UIScrollView()
        v.translatesAutoresizingMaskIntoConstraints = false
        v.backgroundColor = .white
        return v
    }()


let backgroundImageView: UIImageView = {
    let imageView = UIImageView()
    imageView.image = UIImage(named: "eiffel tower")
    imageView.translatesAutoresizingMaskIntoConstraints = false
     imageView.isUserInteractionEnabled = false
    imageView.layer.masksToBounds = true
    imageView.contentMode = .scaleAspectFill

    return imageView
}()


func setUpViews() { 
        self.view.addSubview(scrollView)
        scrollView.addSubview(containerView)

        containerView.addSubview(backgroundImageView)
        backgroundImageView.addSubview(card)
        backgroundImageView.addSubview(yellowCard)

        yellowCard.addSubview(whiteMenu)
        yellowCard.addSubview(arrowButton)

        ///i have left out constraints except for the arrowbutton's constraints as i don't deem them necessary for this question

        arrowButton.anchor(top: nil, left: nil, bottom: nil, right: nil, paddingTop: 0, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: view.frame.width/6, height: view.frame.width/6)

        arrowButton.clipsToBounds = true

        arrowButton.centerXAnchor.constraint(equalTo: whiteMenu.centerXAnchor).isActive = true
        arrowButton.centerYAnchor.constraint(equalTo: whiteMenu.centerYAnchor).isActive = true
}

请使用如下选择器方法添加@objc

 @objc func toggleWhiteMenu() {
    print("toggleWhiteMenu pressed")
    UIView.animate(withDuration: 1, animations: {

        self.whiteMenu.transform = CGAffineTransform(scaleX: 11, y: 11)
    }) { (true) in
        print("really sick")
    }
    }

您正在设置：

.isUserInteractionEnabled = false

在多个视图上，然后添加一个按钮作为子视图
isUserInteractionEnabled
在父视图上设置为false将级联到所有子视图，包括按钮和其他控件。
我们的子视图之一可能是重叠的UIButton为所有子视图设置不同的背景色，并检查您的按钮是否可见如果是，则检查UIButton框架，否则正确设置子视图框架。感谢Abu Ul Hassan，我这样做了，并且按钮明显位于所有子视图的顶部没有子视图重叠按钮您是否尝试过在toggleWhiteMenu func前面添加@objc？编译器可能在运行时未关联func，因为存在此问题。请在SetupView箭头按钮的末尾添加此行。添加目标（self，action:#selector（self.toggleWhiteMenu），for:.touchUpInside）并将其从延迟加载块中删除。