Question

Well, figuring such thing was easy, I decided to get a custom action executed by my UIBarButtonItem once it’s pressed. Here’s the code:

    UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"GET BACK!!!" style:UIBarButtonItemStylePlain target:self action:@selector(test)];
    self.navigationItem.backBarButtonItem = backButton;
    [backButton release];

    [self.navigationController pushViewController:appsViewController animated:YES];

Yet, even without adding any custom views, -test isn’t called at all (although the title change is applied).

As you can see, I’m applying these changes to the item right before I push the new view controller (else the title change wouldn’t even work).

I’ve searched a lot for an answer to this, but the only trouble people seem to be having is it not replying to an action once it has a custom view. So; what am I doing wrong?

Answer 1

You can’t set custom actions on back buttons. (Or, rather the action of the back button item is set to a internal one that does the back-behaviour.) If you want to do something when the user comes back to your view controller, consider doing it in viewWillAppear:. You might need to keep track of whether you’re appearing after pushing a child view controller or appearing the first time, etc.