IOS: Adjust UIButton height depend on title text using Autolayout?

Question

I have a UIButton and it can change the title at the runtime. Therefore, I want to increase the UIButton height depend on the title text for displa

Answer 1

Ayan Sengupta solution in Swift, with support for contentEdgeInsets (thanks Claus Jørgensen):

(You may also further customize the code to take titleEdgeInsets into account if needed)

1. Subclass your UIButton to take the ownership of the layout process:

    /// https://stackoverflow.com/a/50575588/1033581
    class AutoLayoutButton: UIButton {
        override var intrinsicContentSize: CGSize {
            var size = titleLabel!.sizeThatFits(CGSize(width: titleLabel!.preferredMaxLayoutWidth - contentEdgeInsets.left - contentEdgeInsets.right, height: .greatestFiniteMagnitude))
            size.height += contentEdgeInsets.left + contentEdgeInsets.right
            return size
        }
        override func layoutSubviews() {
            titleLabel?.preferredMaxLayoutWidth = frame.size.width
            super.layoutSubviews()
        }
    }
   

2. Use this class in your storyboard, and set constraints for Leading, Trailing, Top, Bottom. But don't set any Height constraint.

An alternative without subclassing is to add a wrapper view as suggested by Bartłomiej Semańczyk answer and Timur Bernikowich comment.