UIBUTTON在自定义UISCROLLVIEW类中不响应触摸

Question

i具有下面的视图结构；

-->Custom Scroll View
    -->Container View
       -->View
          -->Button

我的问题是，我正在向Uibutton添加一个目标，但未调用触摸功能。我尝试在自定义视图类或视图控制器中添加目标。但是，都没有工作。

我检查的内容;

• 我检查了所有视图' isUserInteractionEnabled是否设置为true，并且所有视图都是正确的。
• 我还检查了按钮是否具有框架(一些有关Uibutton的帖子可以看到，但您无法触摸它，因为它没有框架(。

我可能检查了堆栈溢出中的每个答案，其中大多数都在谈论Isusertaction和层次结构，我认为它们在我的情况下都是正确的。

uibutton在自定义视图

时不可单击

自定义uiview添加目标不称为

如何创建自定义视图并在其中添加按钮。

class TyreChangeScrollView: UIScrollView {
//E-Mail
let emailTitleLbl = BaseLabel()
let emailBgView = UIView()
let emailLbl = BaseLabel()
public let emailInfoBtn = UIButton()
let contentView: UIView = {
    let v = UIView()
    v.translatesAutoresizingMaskIntoConstraints = false
    return v
}()
var shouldSetupConstraints = true
override init(frame: CGRect) {
    super.init(frame: frame)
    updateUI()
}
required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
}
func updateUI(){
    addSubview(contentView)
    emailTitleLbl.translatesAutoresizingMaskIntoConstraints = false
    emailTitleLbl.text =  "E-POSTA ADRESİ"
    emailTitleLbl.textAlignment = .left
    contentView.addSubview(emailTitleLbl)
    emailLbl.translatesAutoresizingMaskIntoConstraints = false
    emailLbl.text =  "[e-mail]"
    emailLbl.textAlignment = .left
    emailInfoBtn.setImage(UIImage(named: "info"), for: .normal)
    emailInfoBtn.isUserInteractionEnabled = true
    emailBgView.backgroundColor = Color.Common.fieldBg
    emailBgView.addSubview(emailLbl)
    emailBgView.addSubview(emailInfoBtn)
    contentView.addSubview(emailBgView)
}
override func updateConstraints() {
    if(shouldSetupConstraints) {
        // AutoLayout constraints
        contentView.translatesAutoresizingMaskIntoConstraints = false
        // constrain the scroll view to 8-pts on each side
        contentView.anchor(self.topAnchor, left: self.leftAnchor, bottom: self.bottomAnchor, right: self.rightAnchor, topConstant: 0, leftConstant: 0, bottomConstant: 0, rightConstant: 0, widthConstant: 0, heightConstant: 0)
        contentView.widthAnchor.constraint(equalTo: self.widthAnchor, multiplier: 1.0).isActive = true
        emailTitleLbl.anchor(phoneLbl.bottomAnchor, left: contentView.leftAnchor, bottom: nil, right: contentView.rightAnchor, topConstant: 10, leftConstant: 20, bottomConstant: 0, rightConstant: 16, widthConstant: 0, heightConstant: 0)
        emailLbl.anchor(emailBgView.topAnchor, left: emailBgView.leftAnchor, bottom: emailBgView.bottomAnchor, right: nil, topConstant: 0, leftConstant: 15, bottomConstant: 0, rightConstant: 0, widthConstant: 0, heightConstant: 0)
        emailInfoBtn.anchor(emailBgView.topAnchor, left: nil, bottom: emailBgView.bottomAnchor, right: emailBgView.rightAnchor, topConstant: 0, leftConstant: 0, bottomConstant: 0, rightConstant: 10, widthConstant: 0, heightConstant: 0)
        emailBgView.anchor(emailTitleLbl.bottomAnchor, left: contentView.leftAnchor, bottom: nil, right: contentView.rightAnchor, topConstant: 10, leftConstant: 20, bottomConstant: 0, rightConstant: 16, widthConstant: 0, heightConstant: 50)
        shouldSetupConstraints = false
    }
    super.updateConstraints()
}
}

我如何声明自定义类并将目标添加到Uibutton。

class TyreChangeViewController: BaseViewController{
let scrollView = TyreChangeScrollView()
override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view.
    designUI()
    scrollView.emailInfoBtn.addTarget(self, action: #selector(emailBtnTapped(_:)), for: UIControlEvents.touchUpInside)
    scrollView.phoneInfoBtn.addTarget(self, action: #selector(phoneBtnTapped(_:)), for: UIControlEvents.touchUpInside)
}
override func viewWillAppear(_ animated: Bool) {
    scrollView.anchor(topLayoutGuide.bottomAnchor, left: view.leftAnchor, bottom: bottomLayoutGuide.topAnchor, right: view.rightAnchor, topConstant: 10, leftConstant: 10, bottomConstant: 10, rightConstant: 10, widthConstant: 0, heightConstant: 0)
}
func designUI(){
    view.backgroundColor = Color.Common.screenBgColor
    scrollView.backgroundColor = Color.Common.screenBgWhite
    view.addSubview(scrollView)
}
@objc func emailBtnTapped(_ sender: UIButton){
    print("hello")
}}

编辑：如果我对内容视图添加高度约束，则按钮正在工作，但现在不可滚动。

contentView.heightAnchor.constraint(equalTo: self.heightAnchor, multiplier: 1.0).isActive = true

Answer 1

添加约束刷新布局后必须

override func viewWillAppear(_ animated: Bool) {
    scrollView.anchor(topLayoutGuide.bottomAnchor, left: view.leftAnchor, bottom: bottomLayoutGuide.topAnchor, right: view.rightAnchor, topConstant: 10, leftConstant: 10, bottomConstant: 10, rightConstant: 10, widthConstant: 0, heightConstant: 0)
    self.view.layoutIfNeeded()
 }