CODEWITHSUNDEEP
iphoneuinavigationcontrolleruinavigationitem
user1264577
user1264577

Reputation: 124

Navigation Controller - add custom nav bar item to all views

I am creating a navigation controller in my appDelegate (programmatically). I would like to add a custom button to the nav bar so that it will show up all of the views.

I can get the button to show if I add it in the ViewDidLoad methods of each controller, but is there a way I can add the button only once (i.e. in the appDelegate where I create the nav controller)?

Upvotes: 3

Views: 1431

Answers (1)

akashivskyy
akashivskyy

Reputation: 45210

You can create a simple hierarchy for your ViewControllers:

                               UIViewController
                                       |
                      CustomBarButtonItemViewController
                       /               |             \
                      /       SecondViewController    \
           FirstViewController                 ThirdViewController

The CustomBarButtonItemViewController will overwrite -viewDidLoad, like this:

- (void)viewDidLoad {
    [super viewDidLoad];
    UIbarButtonItem *barButtonItem = ...;
    self.navigationItem.rightBarButtonItem = barButtonItem;
}

Then create your First-, Second- and ThirdViewController as subclasses of the CustomBarButtonItemViewController:

@interface FirstViewController : CustomBarButtonItemViewController

@interface SecondViewController : CustomBarButtonItemViewController

@interface WhateverYouLikeViewController : CustomBarButtonItemViewController

Make sure you call [super viewDidLoad] in your third-level subclasses!

Upvotes: 9

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