Change the font of a UIBarButtonItem

Question

I have a UIBarButtonItem in my UIToolbar titled

Answer 1

This is the right way: declare your barButtonItem (in this case rightBarButtonItem) and add it setTitleTextAttributes.

navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Go!", style: .plain, target: self, action: #selector(yourFuncDestination))

after you can add title attributes

navigationItem.rightBarButtonItem?.setTitleTextAttributes([.font : UIFont.systemFont(ofSize: 18, weight: .bold), .foregroundColor : UIColor.white], for: .normal)

you can change the size, the weight (.bold, .heavy, .regular etc.) and the color how you prefer... Hope this help :)