How to remove UIButton top and bottom padding when you create it using auto layout?

Question

When creating a UIButton with automatic layout, intrinsicContentSize always contains different top and bottom additions depending on the font size of the text. I am trying to set contentEdgeInsets , but it does not work for top / bottom fill.

How to fix indentation to 0 or any constant value?

Answer 1

After some experimentation, it seems that if you try to set contentEdgeInsets to all zeros, the default inserts are used. However, if you set them to almost zero, it works:

 button.contentEdgeInsets = UIEdgeInsets(top: 0, left: 0.01, bottom: 0.01, right: 0) 

It also appears that the values ​​get floor 'd, so you really won't get a fractional addition.

Answer 2

If you want the button to have size in its titleLabel content, I find that the only way to do this is to subclass UIButton and override intrinsicContentSize. Hope this works for you!

Worked for me on iOS 9.3

 class CustomButton: UIButton { override func intrinsicContentSize() -> CGSize { return titleLabel?.intrinsicContentSize() ?? super.intrinsicContentSize() } } 

Answer 3

See if this works. Create vertical constraints for the UIButton titleLabel instead of the button itself.