How can we keep a text field's font size relative to the screen size?

问题

I have a text field and I have given it a regular font with 13 px in size.

But I want the font size to increment with respect to screen size.

Thanks.

回答1:

You can calculate the font size based on the screen's dimensions.

let baseWidth: CGFloat = 320 // the width of the screen where you want to use 13pt
let fontSize = 13 * (UIScreen.main.size.width / baseWidth)
let font = UIFont(name: "HelveticaNeue", size: fontSize)

回答2:

You can simply do this by checking, Automatically Adjusts Font in the Attributes Inspector

来源：https://stackoverflow.com/questions/46176240/how-can-we-keep-a-text-fields-font-size-relative-to-the-screen-size