Adding same button to all view controllers in UINa

Question

I have a UINavigationController (to use like a wizard page) which I create programmatically and I need to display a "Cancel" button to cancel the process in any UIViewController.

Creating the UINavigationController:

FirstVC *firstVC = [[[FirstVC alloc] initWithNibName:@"FirstPage" bundle:nil] autorelease];
firstVC.delegate = self;

navigationController = [[UINavigationController alloc] initWithRootViewController:firstVC];
[self.view addSubview:navigationController.view];

Adding Cancel Button:

UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancelRequestNewLeave:)];
navigationController.topViewController.navigationItem.rightBarButtonItem = cancelButton;
[cancelButton release];

But when I push a second page to UINavigationController the cancel button is not shown on the UINavigationBar. If I go back to first page, the cancel button is there. So, apparently the button is added only for the first view. I believe this is because I'm not subclassing UINavigationController, because I need to use it in a subview. But I don't know how to set the rightBarButtonItem in a UINavigationController which is created programmatically.

navigationController.topViewController.navigationItem.rightBarButtonItem = cancelButton;

Can someone shed a light on this?

Thanks in advance.

Answer 1

You'll need to add the button in every view controller. You cannot do it by setting one once or sharing one between view controllers (in a sensible fashion). A good place to add the button is in the viewDidLoad method of your view controllers. You can create one basic UIViewConteoller subclass for them if you feel this gets to repetitive.

Answer 2

Add this code in your rootview viewDidLoad method and implement the cancelMethod in rootview controller.This will be available in all the view controllers. you can adjust the button location by changing button frame.For orientation change you have manually adjust the location of button.

 UIButton *btnCancel = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        [btnCancel addTarget:self
                        action:@selector(cancelMethod)
              forControlEvents:UIControlEventTouchDown];
        [btnCancel setBackgroundImage:[UIImage imageNamed:@"image"]  
        forState:UIControlStateNormal];
        btnCancel.frame = CGRectMake(280, 27, 45, 25);

    [self.navigationController.view addSubview: btnCancel];