Error when instantiating a UIFont in an text attributes dictionary

Question

I\'m trying to set the font of the UIBarButtonItem like so:

let barButton = UIBarButtonItem.appearance()
barButton.setTitleTextAttributes([NSFon         


        

Answer 1

The initializer of UIFont returns an optional because it may fail due to misspelled font name etc.

You have to unwrap it and check:

if let font = UIFont(name: "AvenirNext", size: 15) {
    barButton.setTitleTextAttributes([NSFontAttributeName: font], forState: UIControlState.Normal)
}

UPDATED for Swift 3

if let font = UIFont(name: "AvenirNext", size: 15) {
    barButton.setTitleTextAttributes([NSFontAttributeName:font], for: .normal)
}