Change the font of a UIBarButtonItem

Question

I have a UIBarButtonItem in my UIToolbar titled

Answer 1

To do this for some UIBarButtonItems but not all I recommend the following approach.

1. Create a UIBarButtonItem subclass. Don't add anything to it - you will only use it as a custom class in the storyboard and for its appearance proxy...
2. In your storyboard, change the custom class for all desired UIBarButtonItems to your subclass
3. In your AppDelegate import your UIBarButtonItem subclass and add the following line to application:didFinishLaunchingWithOptions:

In my case I subclassed UIBarButtonItem for the sole purpose of bolding the text:

[[BoldBarButtonItem appearance] setTitleTextAttributes:
  [NSDictionary dictionaryWithObjectsAndKeys: 
    [UIFont boldSystemFontOfSize:18.0], NSFontAttributeName,nil] 
                                              forState:UIControlStateNormal];