Swift Xib 子视图未填充视图

Question

我正在尝试将子视图（来自 xib）呈现到视图中。子视图呈现在视图中，但它没有按预期填充视图，为什么子视图没有占据 imageControllerPlaceHolder 的框架？

 var imageScrollerSubView: UIView?

     override func viewDidLoad() {
            super.viewDidLoad()

            imageScrollerSubView = UINib(nibName: "ImageScroller", bundle: nil).instantiate(withOwner: nil, options: nil)[0] as? UIView
            imageScrollerSubView?.frame.size.height = ImageScrollerPlaceHolder.frame.size.height
            imageScrollerSubView?.frame.size.width = ImageScrollerPlaceHolder.frame.size.width
            ImageScrollerPlaceHolder.addSubview(imageScrollerSubView!)


        }

Answer 1

尝试在viewDidLayoutSubviews 方法中更新您的目标视图框架

override func viewDidLayoutSubviews() {
        imageScrollerSubView?.frame.size.height = ImageScrollerPlaceHolder.frame.size.height
        imageScrollerSubView?.frame.size.width = ImageScrollerPlaceHolder.frame.size.width
}