ios - storyboard中设置layout， 能不能设置空间的宽度为屏幕宽度的百分比?

Question

我在storyboard中设置layout，假如我设置了button， 水平居中，我可不可以设置button的宽度为屏幕宽度的百分比？

Answer 1

Select the button and click control to connect to viewController.view, which is the view with the usual screen width

Select

Then click Size inspector->Constraints to find the corresponding item, click Edit, and adjust the multiplier

Answer 2

This is possible, but the setting is not the ratio to the screen, but the ratio to Superview. UIViewController.view.width Equivalent to screen width.
Because there are a lot of steps, I wrote an article specifically. Storyboard usage tips: Use proportional layout