Changing UIBackBarButtonItem title?

[myersn024]

I need to change the UIBackBarButtonItem title, and I've tried everything I can think of from setting the title to calling setNeedsDisplay on the navigation controller but nothing works. FWIW, I used the navigation-based application template that's in Beta 7.

[scottiphone]

Post a snippet of code in the hopes it'll be more clear to review what you've done.

[iPhoneGuy]

In the Main Navigation Views :init put in the following code:

		UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStylePlain target:nil action:nil];
        self.navigationItem.backBarButtonItem = backButton;
        [backButton release];

[myersn024]

@iPhoneGuy: your code only works if I change it from this

self.navigationItem.backBarButtonItem = backButton;

to this

self.navigationItem.leftBarButtonItem = backButton;

However, doing what you've said negates the actual action that it originally had. That, of course, can be fixed by changing the action. However, I know that there has to be a way to do this. I'll describe how my program works before asking any more questions. In my program I have two view controllers, rootViewController and addToListViewController. RootViewController is the primary view and its view is automatically added as a subview to the main window when the program loads. When you tap the right bar button, the app delegate loads the AddToListViewController and pushes its view onto the view controller stack, so the back button that I'm trying to change the text of is one that is automatically generated by the push method. I don't have any problem changing any of the button attributes by setting any of the properties of self.navigationItem. However, from the AddToListViewController's implementation, nothing works with regards to the back button.

I've tried setting the title with self.navigationItem.backBarButtonItem.title as well as calling setNeedsRedisplay on the navigationItem's view after changing the title....so far no luck.

[iPhoneGuy]

You need to do it in the root view controller not in any of the child views and it should work. If not please post the init of your root view controller.

[myersn024]

I tried to do it in the RootViewController, but it didn't work. I very well could have been putting the code in the wrong place, though. My RootViewController actually doesn't have an init method since it doesn't house any data. If it were to have an init method it would just be this:

- (id)init {
    [super init];
    return self;
}

[iPhoneGuy]

This should work:

- (id)init
{
	if (self = [super init]) {
		// Initialize your view controller.
		self.title = NSLocalizedString(@"Title", @"AppTitle");

		UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStylePlain target:nil action:nil];
        self.navigationItem.backBarButtonItem = backButton;
        [backButton release];
		
	}
	return self;
}

[myersn024]

I worked on this for a while last night, and the best I could do was creating a left bar button item with the title that I wanted and it's selector called popViewController on the navigation controller. It works, but I like the look of the back button better for this particular purpose as opposed to the square buttons. I'll give the code a try this afternoon once I get home and I'll let you know if it works.

Thanks for the help!