更改 UILabel 行数后调整 UIStackView [英] Resizing UIStackView after changing UILabel number of lines
问题描述
我的 iOS 应用有一个带有以下布局的 UITableViewCell 的 tableview(1 个包含 2 个标签和 1 个按钮的 stackview)
My iOS app has a tableview with one UITableViewCell with the following layout (1 stackview containing 2 labels and 1 button)
当用户点击按钮时，中央标签的行数从 0 到 2，如下所示:
When the user taps the button the number of lines of the central label goes from 0 to 2 and will look like this:
现在这里有两个问题:
1) 调整 UIStackView 的大小
1) Resizing the UIStackView
2) 调整单元格大小
我为问题 1 找到了一个非最佳解决方案，它包括在堆栈中添加一个空视图.(invalidateIntrinsicContentSize 不起作用).
I have found a not-optimal solution for problem 1, which consists of adding an empty view in the stack. (invalidateIntrinsicContentSize was not working).
let emptyView = UIView()
emptyView.frame = CGRect(x: 0, y: 0, width: 0, height: 0)
stackView.addArrangedSubview(emptyView)
正如您在第二个屏幕截图中看到的，单元格没有调整大小，我不确定这是由于堆栈视图还是单元格本身造成的.
As you can see in the second screenshot the cell doesn't resize and I'm not sure if this is due to the stackview or the cell itself.
我想指出一个事实，即我在 UITableViewCell 子类中编写代码，因为按钮事件是在其中处理的.
I would like to point the fact that I'm writing code inside the UITableViewCell subclass as the button event is handled inside it.
对于记录，Tableview 正在使用动态调整大小:
For the records The Tableview is using dynamic sizing:
// dynamic cell sizing
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return CGFloat(cellEstimatedHeight)
}
推荐答案
UIStackView 可能是也可能不是你最好的选择……它的设计更多是为了在自己的框架内排列视图，而不是调整它自己的视图框架.
UIStackView may or may not be your best bet... it's designed more for arranging views inside its own frame, rather than adjusting its own frame to the views.
对于像您在那里一样简单的布局，只布置具有正常约束的元素可能会好得多.
For a layout as simple as you have there, it would probably be much better to just lay out the elements with normal constraints.
看看这个例子:https://github.com/DonMag/DynamicCellHeight
表 B 是完成布局的一种方式(表 A 是我玩过的另一种布局).
Table B is one way of accomplishing your layout (Table A was for another layout I played around with).
当单元格调整大小时，我不得不做一些小技巧才能使主标签保持原位......可能会找到更好的方法.(重新编辑 - 是的，找到了更好的方法)
I had to do a little trickery to get the main label to stay in place while the cell resized... could probably find a better way. (Re-Edit - yep, found a better way)
让我知道它是否有意义 - 毫无疑问，您会想要做一些调整.
Let me know if it makes sense - no doubt you'll want to do some tweaking.
这篇关于更改 UILabel 行数后调整 UIStackView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
