动画化后，UIView失去了约束

如何解决动画化后，UIView失去了约束

我正在尝试模仿控制器的推送过渡，但仅限于视图。但是，即使在动画发生之前，当我添加新视图的约束时，它也会失去约束。要复制问题，请滚动到底部的gif。

以下是相关繁荣的摘要：（其余只是一堆标签和按钮）

//MARK: Properities
var credential: AuthCredential!
let user = Auth.auth().currentUser
var userAuthenticated = false
let controllerTitle = "Update Email"
private var timer: Timer?


lazy var credentialVerificationView: UIView = {
    let centerView = UIView()
    centerView.frame.size.height = self.view.frame.height
    centerView.frame.size.width = self.view.frame.width
    centerView.backgroundColor = UIColor(named: "blankSlate")
    return centerView
}()

lazy var emailUpdateView: UIView = {
    let centerView = UIView()
    centerView.frame.size.height = self.view.frame.height
    centerView.frame.size.width = self.view.frame.width
    centerView.backgroundColor = UIColor.red
    return centerView
}()

我正在使用transform将当前视图从屏幕中间移动到-view.frame.width，将第二个视图从-view.frame.width移动到屏幕中间。 func是：

private func startAutoScrollCardsCollectionView() {
    
    /// This method start timer and fire it immediately
    timer = Timer.scheduledTimer(withTimeInterval: 0.1,repeats: true) { [unowned self] _ in
        UIView.animate(withDuration: 1) {
        self.credentialVerificationView.transform = CGAffineTransform(translationX: -view.frame.width,y: 0)
        self.emailUpdateView.transform = CGAffineTransform(translationX: -view.frame.width,y: 0)                  
        }
    }
}

这是丑陋的一面：

//MARK: authenticateUserAndConfigureView
/// the purpose of this func is merely sentimental; as long as its there it stops me from ever writing UI ever again
    func authenticateUserAndConfigureView()  {
    //        title = controllerTitle
    view.backgroundColor = UIColor(named: "blankSlate")
    emailTextField.textContentType = .username
    emailTextField.keyboardType = .emailAddress
    emailTextField.autocorrectionType = .no
    emailTextField.autocapitalizationType = .none
    emailTextField.spellCheckingType = .no
    
    print("userAuthenticated = \(userAuthenticated)")
    
    if userAuthenticated == true {
        
        loginToContinueLabel.text = "Update Email"
        infoLabel.text = currentEmailLabel1.text
        errorLabel.text?.removeAll()
        startAutoScrollCardsCollectionView()
        emailUpdateView.addSubview(loginToContinueLabel)
        loginToContinueLabel.anchor(top: emailUpdateView.topAnchor,left: nil,bottom: nil,right: nil,paddingTop: 200,paddingLeft: 0,paddingBottom: 0,paddingRight: 0,width: 300,height: 50)
        loginToContinueLabel.centerXAnchor.constraint(equalTo: emailUpdateView.centerXAnchor).isActive = true

        emailUpdateView.addSubview(infoLabel)
        infoLabel.anchor(top: loginToContinueLabel.bottomAnchor,left: emailUpdateView.leftAnchor,right: emailUpdateView.rightAnchor,paddingTop: 24,paddingLeft: 32,paddingRight: 32,width: 0,height: 50)
        infoLabel.centerXAnchor.constraint(equalTo: emailUpdateView.centerXAnchor).isActive = true
        emailUpdateView.addSubview(emailContainerView)
        emailContainerView.anchor(top: infoLabel.bottomAnchor,paddingTop: 15,height: 50)
        emailUpdateView.centerXAnchor.constraint(equalTo: emailUpdateView.centerXAnchor).isActive = true

        emailUpdateView.addSubview(verifyLabel)
        verifyLabel.anchor(top: emailContainerView.bottomAnchor,paddingTop: 2,height: 20)
        emailUpdateView.centerXAnchor.constraint(equalTo: emailUpdateView.centerXAnchor).isActive = true

        emailUpdateView.addSubview(errorLabel)
        errorLabel.anchor(top: verifyLabel.bottomAnchor,paddingTop: 1,height: 0)
        errorLabel.centerXAnchor.constraint(equalTo: emailUpdateView.centerXAnchor).isActive = true

        emailUpdateView.addSubview(updateEmailButton)
        updateEmailButton.anchor(top: errorLabel.bottomAnchor,paddingTop: 16,height: 50)
        updateEmailButton.centerXAnchor.constraint(equalTo: emailUpdateView.centerXAnchor).isActive = true
        view.addSubview(emailUpdateView)
        emailUpdateView.anchor(top: nil,left: view.leftAnchor,right: view.rightAnchor,paddingTop: 0,paddingLeft: +view.frame.width,paddingRight: -view.frame.width,width: view.frame.width,height: 0)

    } else {
        
        credentialVerificationView.addSubview(loginToContinueLabel)
        loginToContinueLabel.anchor(top: credentialVerificationView.topAnchor,height: 50)
        loginToContinueLabel.centerXAnchor.constraint(equalTo: credentialVerificationView.centerXAnchor).isActive = true
        
        credentialVerificationView.addSubview(infoLabel)
        infoLabel.anchor(top: loginToContinueLabel.bottomAnchor,left: credentialVerificationView.leftAnchor,right: credentialVerificationView.rightAnchor,height: 50)
        infoLabel.centerXAnchor.constraint(equalTo: credentialVerificationView.centerXAnchor).isActive = true
        
        credentialVerificationView.addSubview(passwordContainerView)
        passwordContainerView.anchor(top: infoLabel.bottomAnchor,height: 50)
        passwordContainerView.centerXAnchor.constraint(equalTo: credentialVerificationView.centerXAnchor).isActive = true
        
        credentialVerificationView.addSubview(loginButton)
        loginButton.anchor(top: passwordContainerView.bottomAnchor,right:
                            credentialVerificationView.rightAnchor,height: 50)
        loginButton.centerXAnchor.constraint(equalTo: credentialVerificationView.centerXAnchor).isActive = true
        
        credentialVerificationView.addSubview(needHelpButton)
        needHelpButton.anchor(top: loginButton.bottomAnchor,left: loginButton.leftAnchor,height: 0)
        
        credentialVerificationView.addSubview(errorLabel)
        errorLabel.anchor(top: needHelpButton.bottomAnchor,height: 0)
        errorLabel.centerXAnchor.constraint(equalTo: credentialVerificationView.centerXAnchor).isActive = true
        
        self.view.addSubview(credentialVerificationView)
        credentialVerificationView.anchor(top: view.topAnchor,bottom: view.bottomAnchor,height: 0)
        credentialVerificationView.center = self.view.center
    }
}

}