ios - 在 Swift 中以编程方式修改 View 高度

Question

我的 Storyboard中有一个 View 。默认情况下，我将 View 高度设置为“0”。根据我的情况，我需要将 View 高度修改为一定高度并给出大于或等于约束。我已经按照这个链接尝试过。

Is there is a way to create constraint greater than or equal relation through code .

但它不适用于我的情况。

Answer 1

我认为您想以编程方式将高度从 0 更新为您选择的动态值，对吧？

我会这样做:

1. Create a height constraint of the view and assign it to 0. (You can do it in Storyboard or programmatically).
2. Link the constraint to your class if you did it in Storyboard.
3. In your code, update the constraint as follows. constraintName.constant = 400. Note it's a CGFloat.