Change font of UINavigationController title

Can I change the font of my UINavigationCon开发者_开发问答troller? --> title

As of iOS 5 you can change the font via the appearance proxy.

https://developer.apple.com/documentation/uikit/uiappearance

The following will set the title font for all UINavigationControllers.

  NSMutableDictionary *titleBarAttributes = [NSMutableDictionary dictionaryWithDictionary: [[UINavigationBar appearance] titleTextAttributes]];
  [titleBarAttributes setValue:[UIFont fontWithName:@"Didot" size:16] forKey:NSFontAttributeName];
  [[UINavigationBar appearance] setTitleTextAttributes:titleBarAttributes];

To set the font for the back button, do this:

  NSMutableDictionary *attributes = [NSMutableDictionary dictionaryWithDictionary: [[UIBarButtonItem appearance] titleTextAttributesForState:UIControlStateNormal]];
  [attributes setValue:[UIFont fontWithName:@"Didot" size:12] forKey:NSFontAttributeName];
  [[UIBarButtonItem appearance] setTitleTextAttributes:attributes forState:UIControlStateNormal];

To set the font for the large titles available in iOS 11+, do this:

if (@available(iOS 11.0, *)) {
    NSMutableDictionary *largeTitleTextAttributes = [NSMutableDictionary dictionaryWithDictionary: [[UINavigationBar appearance] largeTitleTextAttributes]];
    [largeTitleTextAttributes setValue:[UIFont fontWithName:@"Didot" size:32] forKey:NSFontAttributeName];
    [[UINavigationBar appearance] setLargeTitleTextAttributes:largeTitleTextAttributes];
}

for iOS8+ you can use:

[self.navigationController.navigationBar setTitleTextAttributes:@{ NSFontAttributeName: [UIFont fontWithName:@"MyFont" size:18.0f],
                                                                   NSForegroundColorAttributeName: [UIColor whiteColor]
                                                                   }];

Swift:

self.navigationController?.navigationBar.titleTextAttributes = [NSFontAttributeName: UIFont(name: "MyFont", size: 18.0)!]

The title view can be any view. So just create a UILabel or something else where you change the font and assign that new view to the title property of the navigation item.

An example:

-(void) viewWillAppear:(BOOL)animated {

    [super viewWillAppear:animated];

    CGRect frame = CGRectMake(0, 0, 400, 44);
    UILabel *label = [[[UILabel alloc] initWithFrame:frame] autorelease];
    label.backgroundColor = [UIColor clearColor];
    label.font = [FontHelper fontFor:FontTargetForNavigationHeadings];
    label.textAlignment = UITextAlignmentCenter;
    label.textColor = [UIColor whiteColor];
    label.text = self.navigationItem.title;
    // emboss in the same way as the native title
    [label setShadowColor:[UIColor darkGrayColor]];
    [label setShadowOffset:CGSizeMake(0, -0.5)];
    self.navigationItem.titleView = label;
}

The answer from @morgancodes will set the font for all UINavigationController titles. I've updated it for Swift 4:

let attributes = [NSAttributedStringKey.font: UIFont(name: "Menlo", size: 14) as Any]
UINavigationBar.appearance().titleTextAttributes = attributes
UIBarButtonItem.appearance().setTitleTextAttributes(attributes, for: .normal)