CODEWITHSUNDEEP
objective-ciosuinavigationbarrespondstoselector
aroooo
aroooo

Reputation: 5066

Can't remove shadow from UINavigationBar

I can't remove the shadow from my UINavigationBar for some reason on iOS6. Why isn't this working? I've tried the following:

if ([[UINavigationBar appearance]respondsToSelector:@selector(setShadowImage:)]){
    [[UINavigationBar appearance]setShadowImage:[[UIImage alloc] init]];
}

if ([[UINavigationBar class]respondsToSelector:@selector(setShadowImage:)]){
    [[UINavigationBar appearance]setShadowImage:[[UIImage alloc] init]];
}

Upvotes: 4

Views: 2548

Answers (3)

Nick Schneble
Nick Schneble

Reputation: 76

Mike Pollard has it right.

To remove the shadow underneath the UINavigationBar on iOS 6, you need to set a custom background image in addition to setting the shadow image to a blank UIImage.

CustomViewController.m

- (void)viewDidLoad
{
    [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"Background"] forBarMetrics:UIBarMetricsDefault];
    [self.navigationController.navigationBar setShadowImage:[[UIImage alloc] init]];
}

In the above example, "Background" would be a PNG image in your project.

Upvotes: 1

Mike Pollard
Mike Pollard

Reputation: 10195

This had me stumped for a while until I read the docs!

NOTE: For a custom shadow image to be shown, a custom background image must also be set with the setBackgroundImage:forBarMetrics: method. If the default background image is used, then the default shadow image will be used regardless of the value of this property.

Upvotes: 2

T. Benjamin Larsen
T. Benjamin Larsen

Reputation: 6393

You have to do the work on a NavigationBar instance...

if ([navigationBarInstance respondsToSelector:@selector(setShadowImage:)]){
    [navigationBarInstance setShadowImage:[[UIImage alloc] init]];
}

Edit: If you for some reason really need to perform the check on the class. This will work: 

if ([UINavigationBar instancesRespondToSelector:@selector(setShadowImage:)]) {
}

Upvotes: 3

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