Question

In XCode 4.5.1 creating a storyboard app with a Navigation controller, I am having a hard time trying to set the BACK button for any view controllers that are pushed. I’m using segue’s and the view controller shows as expected. However I want to change the name of the navigation bar and back button dynamically and placed this in my ViewWillAppear:

    self.title = @"Select Songs";
    [self.backButton setTitle:@"Add"];

changes the title of the navigation bar but the back button still displays the NAME of the pushed window rather than the text “Add”.

The Simulated Metrics are all Inferred. I also added a BarButtonItem to the black tray below the view in Xcode and wired up the backButton of the viewcontroller to the backButton, yet the text still does not appear.

Adding the following log messages also yield something interesting: (and yet the titlebar is updating correctly)

-(void) viewDidAppear:(BOOL)animated {
    NSLog(@"%s %@", __FUNCTION__, self.navigationItem.backBarButtonItem);
    NSLog(@"%s %@", __FUNCTION__, self.navigationController.navigationItem.backBarButtonItem);
}

2012-10-14 15:18:41.835 xxxx[2690:907] -[ViewController viewDidAppear:] (null)
2012-10-14 15:18:41.838 xxxx[2690:907] -[ViewController viewDidAppear:] (null)

Answer 1

The back button will show the title of the previous view and if no title is set it’ll show ‘Back’.

So in your prepareForSegue method, you can change the title of the current view before the next view is pushed. The back button will then show whatever you set the title to.