Cannot Set Navigation Bar Font in Swift on Latest Xcode Version

Question

The following code was running fine before updating to Xcode 6.1 to stay up with iOS 8.1:

override func viewDidAppear(animated: Bool) {  
     self.navigationController?.navigationBar.topItem?.title = "Home"
     self.navigationController?.navigationBar.titleTextAttributes = [ NSFontAttributeName: UIFont(name: "Lobster 1.4", size: 34),  NSForegroundColorAttributeName: UIColor.whiteColor()]
}

The issue is specifically in NSFontAttributeName: UIFont(name: "Lobster 1.4", size: 34)

and the error I'm getting here is:

! "Could not find an overload for 'init' that accepts the supplied arguments"

I found this original code on a different StackOverflow question and it was working as expected until this update (downloaded it yesterday). My font is indeed installed properly.

Should I be writing this code differently now, or is there an entirely new way in which I should set my Navigation Bar Font?

Thanks!

Answer 1

Whoops. I figured this out on my own:

I needed an exclamation point following my declaration of the NSFontAttributeName as it requires a type "NSString!". Perhaps it only required an "NSString" before, but I have no issues now.

Working line:

NSFontAttributeName: UIFont(name: "Lobster 1.4", size: 24)!

Working full code:

override func viewDidAppear(animated: Bool) {  
     self.navigationController?.navigationBar.topItem?.title = "Home"
     self.navigationController?.navigationBar.titleTextAttributes = [ NSFontAttributeName: UIFont(name: "Lobster 1.4", size: 34)!,  NSForegroundColorAttributeName: UIColor.whiteColor()]
}

Seems like a silly question now. Hope this helps someone else!

Answer 2

You are using UIFont(name: intializer as it is defined as

init?(name fontName: String, size fontSize: CGFloat) -> UIFont

failable intializer read more from link.So it is returning optional.You need to unwrap it as it require AnyObject not optional.

 self.navigationController?.navigationBar.titleTextAttributes = [ NSFontAttributeName: UIFont(name: "Lobster 1.4", size: 34)!,  NSForegroundColorAttributeName: UIColor.whiteColor()]