How to set title for Navigation Bar - uinavigationcontroller

Question

How to set the title on a root viewcontroller inside a navigation viewcontroller. Generically, the answer seems to be, "set self.title of some viewcontroller". but this only works for the viewcontrollers I am pushing to. On the initial viewcontroller, running self.title = #"my title"; or self.navigationController.navigationItem.title = #"my titles"; don't work.
Thinking that is needed to be set earlier on, I did this in app delegate:
MainMenuViewController *mainMenuViewController = [[MainMenuViewController alloc] initWithNibName:#"MainMenuViewController" bundle:nil];
mainMenuViewController.title = #"coding chal";
self.navController = [[UINavigationController alloc] initWithRootViewController:mainMenuViewController];
What must I do for the root viewcontroller to have a title?Thanks in advance

Answer 1

Setting the view controller's title does work. When you run into trouble, the best course is make yourself a minimal test example. Here's one. This is the only code in the app!
In the app delegate:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
self.window = [UIWindow new];
ViewController* vc = [[ViewController alloc] initWithNibName:nil bundle:nil];
UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:vc];
self.window.rootViewController = nav;
[self.window makeKeyAndVisible];
return YES;
}
In the view controller:
- (instancetype) initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
self.title = #"Testing";
return self;
}
Result:
So you can see that it really does work. If it seems not to work in your app project, therefore, that must be because of other code somewhere.