Ios UIButton选择器功能异常

在我的应用程序中，我有一个UIButton，在上面运行得非常好

• XCode模拟器（主要使用iOS 11.4和iOS 14.5）
• 物理设备（iPhone 6:iOS 12.5、iPhone 7:iOS 14.5、iPhone 12:iOS 14.5）

我的问题是，我客户的一些电话没有按预期工作

• iPhone XR:iOS 14.5
• iphonexsmax:ios14.5
• iPhone8 Plus:iOS 14.4

预期行为- 用户单击按钮>调用选择器函数>触发回调>转到另一个视图控制器

class MainViewController: UIViewController {
    
    private let containerView: UIView = {
        let view = UIView(frame: .zero)
        return view
    }()

    private var currentContentVC: UIViewController

    init() {
        let childVC = ChildViewController()
        currentContentVC = childVC
        childVC.delegate = self
        super.init(nibName: nil, bundle: nil)
    }

    override func loadView() {
        super.loadView()

        view.addSubview(containerView);
        containerView.topAnchor.constraint(equalTo: view.topAnchor, constant: 0).isActive = true
        containerView.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 0).isActive = true
        containerView.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 0).isActive = true
        containerView.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: 0).isActive = true

        currentContentVC.view.frame = containerView.bounds
        addChild(currentContentVC)
        containerView.addSubview(currentContentVC.view)
    }
}

extension MainViewController: ChildViewControllerCallBack {
    func btnPressed() {
        let oldVC = currentContentVC
        let newVC = OtherChildViewController()
        newVC.delegate = self
        newVC.view.frame = containerView.bounds
        currentContentVC = newVC
        switchChildController(from: oldVC, to: currentContentVC, options: options)
    }
}

客户的电话行为- 用户点击了按钮，什么也没发生。我很确定这个应用程序已经捕捉到了触摸，因为按下的按钮上有阴影

下面是我使用的示例代码

MainViewController：此控制器的目的是在不同的子视图控制器之间交换

class MainViewController: UIViewController {
    
    private let containerView: UIView = {
        let view = UIView(frame: .zero)
        return view
    }()

    private var currentContentVC: UIViewController

    init() {
        let childVC = ChildViewController()
        currentContentVC = childVC
        childVC.delegate = self
        super.init(nibName: nil, bundle: nil)
    }

    override func loadView() {
        super.loadView()

        view.addSubview(containerView);
        containerView.topAnchor.constraint(equalTo: view.topAnchor, constant: 0).isActive = true
        containerView.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 0).isActive = true
        containerView.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 0).isActive = true
        containerView.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: 0).isActive = true

        currentContentVC.view.frame = containerView.bounds
        addChild(currentContentVC)
        containerView.addSubview(currentContentVC.view)
    }
}

extension MainViewController: ChildViewControllerCallBack {
    func btnPressed() {
        let oldVC = currentContentVC
        let newVC = OtherChildViewController()
        newVC.delegate = self
        newVC.view.frame = containerView.bounds
        currentContentVC = newVC
        switchChildController(from: oldVC, to: currentContentVC, options: options)
    }
}

ChildViewController：由故障按钮组成的控制器

class ChildViewController: UIViewController {

    weak var delegate: ChildViewControllerCallBack?

    private let mainV: UIView = {
        let view = UIView()
        return view
    }()

    private let detailV: UIView = {
        let view = UIView()
        return view
    }()

    private let myBtn: UIButton = {
        let button = UIButton(type: .custom)
        let buttonImage = UIImage(named: "btn_gold_square")
        let imageRatio = (buttonImage?.size.width)! / (buttonImage?.size.height)!
        button.setBackgroundImage(buttonImage, for: .normal)
        button.titleLabel?.font = Font.dynamicXSmallFont
        button.titleLabel?.numberOfLines = 2
        button.titleLabel?.textAlignment = .center
        button.setTitle(title, for: .normal)
        button.setTitleColor(Colors.black, for: .normal)
        let imageWidth = (SharedData.shared().dialogWidth + (SharedData.shared().dialogWidth * 0.1)) * 0.25
        let imageHeight = imageWidth / imageRatio
        button.widthAnchor.constraint(equalToConstant: imageWidth).isActive = true
        button.heightAnchor.constraint(equalToConstant: imageHeight).isActive = true
        button.addTarget(self, action: #selector(btnPressed), for: .touchUpInside)
        return button
    }()

    protocol hildViewControllerCallBack: class {
        func btnPressed()
    }

    override func loadView() {
        super.loadView()

        view.addSubview(mainV);
        mainV.topAnchor.constraint(equalTo: view.topAnchor, constant: 0).isActive = true
        mainV.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 0).isActive = true
        mainV.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 0).isActive = true
        mainV.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: 0).isActive = true

        [detailV, myBtn].forEach { mainV.addSubview(0) }
        detailV.topAnchor.constraint(equalTo: mainV.topAnchor, constant: 0).isActive = true
        detailV.leadingAnchor.constraint(equalTo: mainV.leadingAnchor, constant: 0).isActive = true
        detailV.bottomAnchor.constraint(equalTo: mainV.bottomAnchor, constant: 0).isActive = true
        detailV.widthAnchor.constraint(equalTo: mainV.widthAnchor, multiplier: 0.7).isActive = true
        detailV.centerYAnchor.constraint(equalTo: mainV.centerYAnchor).isActive = true

        myBtn.leadingAnchor.constraint(equalTo: detailV.trailingAnchor, constant: 0).isActive = true
        myBtn.trailingAnchor.constraint(equalTo: mainV.trailingAnchor, constant: 0).isActive = true

    }

    @objc private func btnPressed(){
        delegate?.btnPressed()
    }
}

---

在MainViewController类中的addChild

addChild（currentContentVC）

之后添加此行

currentContentVC.didMove（toParent:self）

。您是否在控制台日志中看到有关约束的任何警告？我遇到了一个关于约束的问题，它使一些功能无法工作