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

With Swift 4

NSFontAttributeName is deprecated, you can use NSAttributedStringKey values to set attributes.

if let fontStyle = UIFont(name: "HelveticaNeue-Light", size: 19) {
 navigationController?.navigationBar.titleTextAttributes = [NSAttributedStringKey.font: fontStyle]

}

Answer 2

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)
}

Answer 3

Setting Custom font is little bit tricky, since they don't have font and title properties. Hope this following answer will help you.

let font = UIFont(name: "<your_custom_font_name>", size: <font_size>)
var leftBarButtonItem = UIBarButtonItem(title: "<font_hex_code>", style: UIBarButtonStyle.Plain, target: self, action: "buttonClicked:")
leftBarButtonItem.setTitleTextAttributes([NSFontAttributeName:font!], forState: UIControlState.Normal)
self.navigationItem.leftBarButtonItem = leftBarButtonItem

Answer 4

if let font : UIFont = UIFont(name: "Roboto-Regular", size: 15)
        {
            cancelBarButton.setTitleTextAttributes([NSFontAttributeName: font], forState: UIControlState.Normal)
            doneBarButton.setTitleTextAttributes([NSFontAttributeName: font], forState: UIControlState.Normal)

        }