滚动在子视图中不起作用 - swift（iOS）

Question

我在containerview中添加了子视图，containerview高度会随着子视图高度的变化而更新。当Bzcardview显示时，它将隐藏containerview，当containerview显示时，它将隐藏Bzcardview。 Bazcardview和containerview都有相同的约束。

func UpdateSubviewHeight()  {
    
    if  segmentHeaderView.selectedSegmentIndex == 0
    {
       
        self.containerviewHeighContraint.constant =  InformationTabView.InnerviewHeightContraint.constant + 50
    }
    else {
        self.containerviewHeighContraint.constant = self.BzcardView.view.height
    }
    self.view.layoutIfNeeded()
}

private func addChildViewController(vc: UIViewController) {
  
    self.Containerview.addSubview(vc.view)
    if vc == FirstTabView
    {
        self.containerviewHeighContraint.constant =  InformationTabView.InnerviewHeightContraint.constant
    }
    else {
       self.containerviewHeighContraint.constant = vc.view.height
    }
    self.view.layoutIfNeeded()
       

    activateRequiredConstraints(for: vc.view)
    vc.didMove(toParent: self)
}

private func activateRequiredConstraints(for childView: UIView) {
    childView.translatesAutoresizingMaskIntoConstraints = false
    NSLayoutConstraint.activate([
        childView.leadingAnchor.constraint(equalTo: Containerview.leadingAnchor, constant: 0),
        childView.trailingAnchor.constraint(equalTo: Containerview.trailingAnchor, constant: 0),
        childView.topAnchor.constraint(equalTo: Containerview.topAnchor, constant: 0),
        childView.bottomAnchor.constraint(equalTo: Containerview.bottomAnchor, constant: 0),
        childView.heightAnchor.constraint(equalTo: Containerview.heightAnchor, constant: 0)
    ])
} 

当选项卡更改时，它只执行隐藏和显示操作。

if segmentedControl.selectedSegmentIndex == 0
    {
        self.InformationTabView.view.isHidden = false
        self.ExposuresView.view.isHidden = true
        self.Bzcardview_.isHidden = true
        self.scrollview.isScrollEnabled = true
        self.Bzcardview_.isHidden = true
        self.Bzcardview_.isUserInteractionEnabled = false
    }
    else if segmentedControl.selectedSegmentIndex == 1
    {
        self.InformationTabView.view.isHidden = true
        self.Bzcardview_.isHidden = false
        self.Bzcardview_.isUserInteractionEnabled = true
        self.ExposuresView.view.isHidden = true
        self.scrollview.isScrollEnabled = false
    }

Answer 1

override func layoutSubviews() {
    super.layoutSubviews()
    DispatchQueue.main.async {
        
        if self.Bzcardview_.isHidden{
            self.containerviewHeighContraint.constant = vc.view.height
            self.containerviewHeighContraint.constant = self.BzcardView.view.height
        }else{
            self.containerviewHeighContraint.constant =  InformationTabView.InnerviewHeightContraint.constant + 50
            self.containerviewHeighContraint.constant =  InformationTabView.InnerviewHeightContraint.constant
            
        }
    }
}