我有一个 viewController,我想在里面有两个 1 tableView 和 1 childViewController.
I have a viewController and I want to have two 1 tableView and 1 childViewController inside it.
我的约束如下:
NSLayoutConstraint.activate([
tableView.topAnchor.constraint(equalTo: view.topAnchor),
tableView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
tableView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
tableView.bottomAnchor.constraint(equalTo: artistVC.view.topAnchor),
])
NSLayoutConstraint.activate([
artistVC.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
artistVC.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
artistVC.view.bottomAnchor.constraint(equalTo: view.bottomAnchor)
])
当我这样设置时,只有 childVC 显示在屏幕上.我没有看到 tableView. 我想让 tableView 尽可能多地展开,然后让 childVC 可滚动到底部.
When I setup this way, only the childVC shows on the screen. I don’t see the tableView. I want to allow the tableView to expand as much as it needs and then let the childVC be scrollable to the bottom.
高度和可滚动内容大小不明确
高度和垂直位置不明确
但是我不能自己设置高度,因为我不知道 tableViewCell 的高度是多少..
However I can't set the height myself as I don't know what the height of the tableViewCell is..
有什么建议吗?我已经尝试更改内容拥抱和内容压缩阻力,但我没有找到任何运气.
Any suggestions? I've tried changing the content hugging and content Compression Resistance but I didn't find any luck there.
我建议像这样子类化 UITableView
:
I suggest subclassing UITableView
like this:
class AutomaticHeightTableView: UITableView {
override var intrinsicContentSize: CGSize {
return contentSize
}
override func reloadData() {
super.reloadData()
invalidateIntrinsicContentSize()
}
}
然后在 Interface Builder 中将 AutomaticHeightTableView
设置为表格视图的类,表格将尝试调整自身大小以适应内容.它将遵循您放置的任何其他约束,因此请确保约束允许它自由增长.
Then in Interface Builder set AutomaticHeightTableView
as the class to your table view and the table will try to size itself to fit the content. It will follow any other constraints you placed so make sure the constraints allow it to grow freely.
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