找不到以编程方式将所有视图添加到UIScrollview的方法

Question

>**这是我以编程方式制作的 ui 的代码，但我无法使其能够滚动**

这是我的代码，我已经尝试了许多以编程方式添加滚动视图的方法，但没有成功，请帮助

 var cityname_EN: String?
 var cityname_DE: String?
 var country: String?
 var text_EN: String?
 var text_DE: String?
var scrollView: UIScrollView!
var imageView: UIImageView!
let labelOne: UILabel = {
let label = UILabel()
label.text = "Scroll Top"
label.backgroundColor = .red
label.translatesAutoresizingMaskIntoConstraints = false
return label
}()
let labelTwo: UILabel = {
    let label = UILabel()
    label.text = "Scroll Bottom"
    label.backgroundColor = .green
    label.translatesAutoresizingMaskIntoConstraints = false
    return label
}()

let allImageView: UIImageView = {
    let imageView = UIImageView(image: #imageLiteral(resourceName: "all"))
    imageView.translatesAutoresizingMaskIntoConstraints = false
    imageView.contentMode = .scaleAspectFit
    return imageView
}()

let citynameELable:UILabel = {
    let citynameELable = UILabel()

    citynameELable.textColor = UIColor.darkText
    citynameELable.textAlignment = .center
    citynameELable.font = UIFont.boldSystemFont(ofSize: 18)
    citynameELable.translatesAutoresizingMaskIntoConstraints = false
    return citynameELable
}()
let countryLable:UILabel = {
    let countryLable = UILabel()

    countryLable.textColor = UIColor.darkText
    countryLable.textAlignment = .center
    countryLable.font = UIFont.boldSystemFont(ofSize: 18)
    countryLable.translatesAutoresizingMaskIntoConstraints = false
    return countryLable
}()

let textELable: UITextView = {
    let textELable = UITextView()
    textELable.translatesAutoresizingMaskIntoConstraints = false
    textELable.textAlignment = .center
    textELable.font = UIFont.boldSystemFont(ofSize: 12)
    textELable.isEditable = false
    textELable.isScrollEnabled = false
    return textELable
}()

override func viewDidLoad() {
    super.viewDidLoad()
    view.backgroundColor = UIColor.white
    setupNavigation()
 setupLayout()

}


func setupNavigation(){
    navigationItem.title = "Map View"
    navigationController?.navigationBar.prefersLargeTitles = true
    navigationItem.hidesSearchBarWhenScrolling = false
    navigationController?.navigationBar.largeTitleTextAttributes =
        [NSAttributedStringKey.foregroundColor: UIColor.gray,
         NSAttributedStringKey.font: UIFont(name: "Arial", size: 30) ??
            UIFont.systemFont(ofSize: 30)]
}

private func setupLayout()
{
    view.addSubview(countryLable)
    view.addSubview(citynameELable)
    view.addSubview(textELable)
    citynameELable.text = cityname_EN
    countryLable.text = country
    textELable.text = text_EN
    let topMapBokContainerView = UIView()
    topMapBokContainerView.backgroundColor = UIColor.red
    topMapBokContainerView.translatesAutoresizingMaskIntoConstraints = false
    let mySegmentedControl = UISegmentedControl (items: ["English","DE"])


    mySegmentedControl.translatesAutoresizingMaskIntoConstraints = false
    mySegmentedControl.accessibilityActivate()
    mySegmentedControl.isEnabledForSegment(at: 0)
    mySegmentedControl.selectedSegmentIndex = 0
    // Add function to handle Value Changed events
    mySegmentedControl.addTarget(self, action: #selector(self.segmentedValueChanged(_:)), for: .valueChanged)


    let bottomControlsStackView = UIStackView(arrangedSubviews: [citynameELable,countryLable])
    bottomControlsStackView.backgroundColor = UIColor.blue
    bottomControlsStackView.translatesAutoresizingMaskIntoConstraints = false
    bottomControlsStackView.distribution = .fillEqually


    view.addSubview(topMapBokContainerView)


    topMapBokContainerView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor).isActive = true
    topMapBokContainerView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor).isActive = true
    topMapBokContainerView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor).isActive = true
    topMapBokContainerView.heightAnchor.constraint(equalTo: view.heightAnchor, multiplier: 0.5).isActive = true

    topMapBokContainerView.addSubview(allImageView)

    allImageView.centerXAnchor.constraint(equalTo: topMapBokContainerView.centerXAnchor).isActive = true
    allImageView.centerYAnchor.constraint(equalTo: topMapBokContainerView.centerYAnchor).isActive = true
    allImageView.heightAnchor.constraint(equalTo: topMapBokContainerView.heightAnchor, multiplier: 0.5).isActive = true

    self.view.addSubview(mySegmentedControl)
    NSLayoutConstraint.activate([
        mySegmentedControl.topAnchor.constraint(equalTo: topMapBokContainerView.safeAreaLayoutGuide.bottomAnchor, constant: 10 ),
        mySegmentedControl.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor, constant: 10),
        mySegmentedControl.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor, constant: -10),
        mySegmentedControl.heightAnchor.constraint(equalToConstant: 30)
        ])
    view.addSubview(bottomControlsStackView)
    NSLayoutConstraint.activate([
        bottomControlsStackView.topAnchor.constraint(equalTo: mySegmentedControl.safeAreaLayoutGuide.bottomAnchor, constant: 10 ),
        bottomControlsStackView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor, constant: 10),
        bottomControlsStackView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor, constant: -10),
        bottomControlsStackView.heightAnchor.constraint(equalToConstant: 50)
        ])
    view.addSubview(textELable)
    textELable.topAnchor.constraint(equalTo: bottomControlsStackView.safeAreaLayoutGuide.bottomAnchor).isActive = true
    textELable.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor, constant: 10).isActive = true
    textELable.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor, constant: -10).isActive = true
    textELable.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor, constant: 0).isActive = true

}
@objc func segmentedValueChanged(_ sender:UISegmentedControl!)
{
    if sender.selectedSegmentIndex == 0 {
        citynameELable.text = cityname_EN
        textELable.text = text_EN
    }
    else if  sender.selectedSegmentIndex == 1 {
        citynameELable.text = cityname_DE
        textELable.text = text_DE
    }

}


override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

}

我创建的所有视图都试图添加到滚动视图中，例如view.addSubView(MyViews Here)

这是我的应用的屏幕截图

Answer 1

1. 设置约束顶部、底部、前导和尾随以引用超级视图的滚动视图
2. Super View add Scroll View （view.addSubview（scrollView））
创建内容视图
3. 并设置约束 内容视图的顶部、底部、前行和尾随 引用滚动视图
4. 将内容视图添加到 ScrollView （scrollView.addSubview（contentView））
5. 在内容视图中设置元素

Answer 2

根据您的问题，您的视图层次结构应该是：

视图 -> 滚动视图 -> 所有您的视图

因此，您可以将滚动视图框架设置为与视图相同的视图，然后：

view.addSubView(scrollView)
scrollView.addSubView(yourViews Here)