if you are doing it all by code in the viewDidLoad method of the UIViewController you should only add self.title = @"title text";
something like this:
- (void)viewDidLoad {
[super viewDidLoad];
self.title = @"title";
}
you could also try self.navigationItem.title = @"title";
also check if your navigationItem is not null and if you have set a custom background to the navigationbar check if the title is set without it.