objective c - Hiding The TopBar -

I have tried different ways to hide the top navigation bar, but do not hide

1. I have tried in viewDidAppear

     [self.navigationController setToolbarHidden: yes];  

2. For UINavigationControllerDelegate confirm with this code,

     (zero) navigationController: (UINavigationController *) navigationController willShowViewController: ( UIViewController *) Animated ViewController: (BOOL) animated {BOOL shouldhide = [count count count] [= count = count = 0]; [Navigation Controller Settlerbar: Animated Hearing: Animated]; }         
    
    
    
    Is pre>> code> UINavigationController * NAV_instructions = [[UINavigationController alloc] initWithRootViewController: instructions]; [Nav instructions set toolbarhead: yes]; [Nav instructions setmodeltransistor style: eumodal transcription styleparticial];  

   Do I have to hide the top bar?

Try this:

  self.navigationController.navigationBarHidden = yes ;