如何更改UINavigation条形字体

Question

I am using this code to change the navigation bar color and font. How do i make the font thin? I tried adding a font family name, but the app crashed. Please answer in swift.

nav?.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.whiteColor(), NSFontAttributeName: UIFont.boldSystemFontOfSize(20)]

Answer 1

use this code :

self.navigationController.navigationBar.titleTextAttributes = [ NSFontAttributeName: UIFont(name: "CaviarDreams", size: 20)!]
let colorDict: NSDictionary = [NSForegroundColorAttributeName: UIColor.whiteColor()]
self.navigationController.navigationBar.titleTextAttributes = colorDict

Answer 2

Please take a look at your own code, bold is the opposite to thin.

When you state UIFont.boldSystemFontOfSize(20)] you're telling UIKit to use the default Font with a thick format.

UPDATE:

Use one of these functions instead:

UIFont.systemFontOfSize(fontSize: CGFloat, weight: CGFloat)
UIFont.systemFontOfSize(fontSize: CGFloat)