uibutton.setTitle change text without changing font size

Question

First, I added a button and set it's size to be 40

Then, in ViewController, I will change its text when user tap the button

startStopBtn.setTitle("START", for: .normal)

But not only the title change, the size also changed to 17.

Why is that? I want to keep the size unchanged.

Im using swift 5

Answer 1

iOS 15 introduced Configuration settings for many controls -- including UIButton .

When you create a button using Storyboard / Interface Builder in Xcode 13, the default configuration is Plain . Without changing that, you need to use the options via UIButton.Configuration to change much (most) of the button's appearance.

Selecting Default from the Button Style drop-down gives you a "pre-iOS 15" type of button.