My navigation bar's large title is too wide. How to fix that?

Question

I am using navigation controller, and I\'ve set to true its navigation bar\'s prefersLargeTitle property. Everything works fine, but when the text of my title becom

Answer 1

Made an edit to @vicente.fava answer - this works great.

self.title = longTitle
self.navigationController?.navigationBar.prefersLargeTitles = true
adjustLargeTitleSize()


extension UIViewController {
func adjustLargeTitleSize() {
    guard let title = title, #available(iOS 11.0, *) else { return }

    let maxWidth = UIScreen.main.bounds.size.width - 60
    var fontSize = UIFont.preferredFont(forTextStyle: .largeTitle).pointSize
    var width = title.size(withAttributes: [NSAttributedString.Key.font: UIFont.systemFont(ofSize: fontSize)]).width

    while width > maxWidth {
        fontSize -= 1
        width = title.size(withAttributes: [NSAttributedString.Key.font: UIFont.systemFont(ofSize: fontSize)]).width
    }

    navigationController?.navigationBar.largeTitleTextAttributes =
        [NSAttributedString.Key.font: UIFont.boldSystemFont(ofSize: fontSize)
    ]
}

}