如何使用自动布局（约束）向 UIPageViewController 添加子视图？

Question

我尝试将 UIImageView 添加到 UIPageVC 背景视图，但它将作为子视图，因为它会通过约束自动布局。

我试图在 UIPageViewController 中做这样的事情 class:

override func viewDidLoad() {
    super.viewDidLoad()
    dataSource = self
    delegate = self

    // Adding an UIImageView to background

    let imageView = UIImageView(image: UIImage(named: "backgoundImage"))
    imageView!.contentMode = .scaleToFill
    view.insertSubview(imageView!, at: 0)
}

感谢大家的回答！

Answer 1

您需要对广告限制执行类似的操作。

if let imageView = UIImageView(image: UIImage(named: "backgoundImage")) {
  imageView.contentMode = .scaleToFill
  view.insertSubview(imageView, at: 0)

  imageView.translatesAutoresizingMaskIntoConstraints = false

  imageView.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 0).isActive = true
  imageView.topAnchor.constraint(equalTo: view.topAnchor, constant: 0).isActive = true
  imageView.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 0).isActive = true
  imageView.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: 0).isActive = true
}

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