How to resize Title in a navigation bar dynamically

Question

I have some views that show up in a navigation controller. Two of these views have a longer title for the navigation bar.

The problem is that when the title is too

Answer 1

Swift 4 and iOS 13

Adding this so my future self can find it. Views added to titleView for some reason don't like to automatically resize themselves. So you have to do it manually.

Example

(navigationItem.titleView as? UILabel)?.text = "A longer string..." // label not resized and text is cut off

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Solution

navigationItem.titleView?.translatesAutoresizingMaskIntoConstraints = false
navigationItem.titleView?.setNeedsLayout()
navigationItem.titleView?.layoutIfNeeded()
navigationItem.titleView?.translatesAutoresizingMaskIntoConstraints = true

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Thanks to @Paolo Musolino for leading me here.