iOS - Globally change navigation bar title color using appearance?

Question

This crashes the app:

[[UINavigationBar appearance] setTitleColor:[UIColor darkGrayColor] forState:UIControlStateNormal];

Is there a way to do

Answer 1

Using modern syntax and code that actually runs, this is how to globally style your UINavigationBar title text:

NSShadow *navigationBarTitleShadow = [[NSShadow alloc] init];
navigationBarTitleShadow.shadowColor = [UIColor colorWithWhite:0.5
                                                         alpha:0.5];
navigationBarTitleShadow.shadowOffset = CGSizeMake(2.0, 2.0);
[[UINavigationBar appearance] setTitleTextAttributes:@{ NSForegroundColorAttributeName : [UIColor blackColor],
                                                        NSFontAttributeName : [UIFont fontWithName:@"Arial-BoldMT"
                                                                                              size:30.0],
                                                        NSShadowAttributeName : navigationBarTitleShadow }];

Note: NSShadow's shadowBlurRadius property is not respected.

Note: Shadows are so iOS 6. Don't ever use them.