Colouring fun with moreNavigationController

Rune Madsen — Sat, 09 Jan 2010 16:03:40 +0000

When adding more than 5 view controllers to your UITabBarController, a “More” tab is automatically setup for you, which includes a view controller and even a modal view for letting the user edit the app’s tabs in the order they want.

By default, the navigation bars for both the moreNavigationController and the modal view (edit) are the Default blue, but changing these colours isn’t exactly straightforward.

Here’s an example of what we want to achieve:

I use an orange colour in one of my apps for the navigation bars and it just looks wrong when the more tab’s navigation bars are blue.

Changing the colour of the moreNavigationController is quite easy. After you alloc the UITabBarController, set the colour of the moreNavigationController:

tabBarController.moreNavigationController.navigationBar.tintColor = [UIColor orangeColor];

You can also use the barStyle property if you like:

tabBarController.moreNavigationController.navigationBar.barStyle = UIBarStyleBlackOpaque;

That wasn’t so hard. But the navigation bar for the modal view that pops up when the user taps “Edit” is still the default blue. So let’s change that as well:

First, if you haven’t already, make sure your AppDelegate implements the UITabBarControllerDelegate. Then add the optional delegate method willBeginCustomizingViewControllers: in your AppDelegate’s implementation file, and add the following lines of code:

- (void)tabBarController:(UITabBarController *)controller willBeginCustomizingViewControllers:(NSArray *)viewControllers {

    UIView *editView = [controller.view.subviews objectAtIndex:1];

    UINavigationBar *modalNavBar = [editView.subviews objectAtIndex:0];

    modalNavBar.tintColor = [UIColor orangeColor];

}

Again, it’s possible to set the barStyle property instead of the tintColor, but barStyle won’t give you all the colour options, of course.

Now that you have gained control of the modal view, you change more properties. By default, the navigation bar title says “Configure”, but you can change that as well, or how about the background colour? Here’s how:

- (void)tabBarController:(UITabBarController *)controller willBeginCustomizingViewControllers:(NSArray *)viewControllers {

    UIView *editView = [controller.view.subviews objectAtIndex:1];

    editView.backgroundColor = [UIColor grayColor];

    UINavigationBar *modalNavBar = [editView.subviews objectAtIndex:0];

    modalNavBar.tintColor = [UIColor orangeColor];

    modalNavBar.topItem.title = @"Edit Tabs";

}

Regarding the HIG… I am not sure if all this is allowed. I will be submitting an update with an orange coloured navigation bar for both those views, and I believe other apps have it (NY Times) so I don’t think it goes against the HIG.

However, I don’t think it’s a good idea to change the backgroundColor property of the “editView”. I tried with a grey colour and it doesn’t look right. It might also get your app rejected, because it’s such a big change. That your navigation bars are the same colour throughout your app only makes it look better in my opinion, rather than having a blue navigation bar clash with the rest of your beautifully designed app :)

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Translucent UINavigationBar

Rune Madsen — Thu, 17 Sep 2009 19:22:26 +0000

Apparently, making your UINavigationBar requires a (tiny) bit more code than just:

self.navigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent;

After trying hard to change my UINavigationBar colour, and mostly giving up, I found out you have to set its tintColor to nil.

self.navigationController.navigationBar.tintColor = nil;

self.navigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent;

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Colouring fun with moreNavigationController

Translucent UINavigationBar