以編程方式垂直UIScrollView

我添加了一些約束，但它水平滾動，問題出在哪里我如何管理它垂直滾動？我嘗試分別為 contentSize 的寬度和高度添加一些額外的點，但沒有結果它保持水平滾動。

2. 我剛剛意識到第二個問題，在我添加 ScrollView 后，我在 UIView 中的收藏按鈕開始不起作用，但是，按鈕添加到 UIView 中的 ContentView 子視圖，它位于 ScrollView 中。提前致謝！

private func setupScrollView() {
      self.view.addSubview(scrollView)
      scrollView.addSubview(contentView)
      scrollView.translatesAutoresizingMaskIntoConstraints = false
      contentView.translatesAutoresizingMaskIntoConstraints = false
      
      scrollView.contentSize = CGSize(width: self.view.frame.width, height: self.view.frame.height   1000)
      
      NSLayoutConstraint.activate([
          scrollView.topAnchor.constraint(equalTo: self.view.topAnchor),
          scrollView.trailingAnchor.constraint(equalTo: self.view.trailingAnchor),
          scrollView.bottomAnchor.constraint(equalTo: self.view.bottomAnchor),
          scrollView.leadingAnchor.constraint(equalTo:self.view.leadingAnchor)
      ])
          NSLayoutConstraint.activate([
              contentView.topAnchor.constraint(equalTo: scrollView.topAnchor),
              contentView.trailingAnchor.constraint(equalTo: scrollView.trailingAnchor),
              contentView.bottomAnchor.constraint(equalTo: scrollView.bottomAnchor),
              contentView.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor),
      ])

uj5u.com熱心網友回復：

您需要在中設定height的：contentUIScrollViewviewWillLayoutSubviews

override func viewWillLayoutSubviews() {
    super.viewWillLayoutSubviews()
    self.scrollView.contentSize.height = self.view.frame.height   1000
}

并洗掉這一行：scrollView.contentSize = CGSize(width: self.view.frame.width, height: self.view.frame.height 1000)

uj5u.com熱心網友回復：

你可以試試

解決的關鍵

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    scrollView.contentSize = CGSize(width: self.view.frame.width, height: self.view.frame.height   1000)
}

class ViewController: UIViewController {

    let scrollView = UIScrollView()
    let contentView = UIView()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        setupScrollView()
    }

    private func setupScrollView() {
        scrollView.backgroundColor = .orange
        contentView.backgroundColor = .red
        self.view.addSubview(scrollView)
        scrollView.addSubview(contentView)
        scrollView.translatesAutoresizingMaskIntoConstraints = false
        contentView.translatesAutoresizingMaskIntoConstraints = false
        NSLayoutConstraint.activate([
            scrollView.topAnchor.constraint(equalTo: self.view.topAnchor),
            scrollView.trailingAnchor.constraint(equalTo: self.view.trailingAnchor),
            scrollView.bottomAnchor.constraint(equalTo: self.view.bottomAnchor),
            scrollView.leadingAnchor.constraint(equalTo:self.view.leadingAnchor),
            
            contentView.widthAnchor.constraint(equalTo: view.widthAnchor),
            contentView.topAnchor.constraint(equalTo: scrollView.topAnchor),
            contentView.trailingAnchor.constraint(equalTo: scrollView.trailingAnchor),
            contentView.bottomAnchor.constraint(equalTo: scrollView.bottomAnchor),
            contentView.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor),
            contentView.heightAnchor.constraint(equalToConstant: 300)
        ])
         
    }
   
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        scrollView.contentSize = CGSize(width: self.view.frame.width, height: self.view.frame.height   1000)
    }


}

標籤：IOS 迅速 uiscrollview 自动布局 uikit

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