iOS: UIButton resize according to text length

Question

In interface builder, holding Command + = will resize a button to fit its text. I was wondering if this was possible to do programmatically before the

Answer 1

For some reason, func sizeToFit() does not work for me. My set up is I am using a button inside a UITableViewCell and I am using auto layout.

What worked for me is:

1. get the width constraint
2. get the intrinsicContentSize width because according the this document auto layout is not aware of the intrinsicContentSize. Set the width constraint to the intrinsicContentSize width

Here're two titles from the Debug View Hierachry