How to change UIStatusBarStyle in iOS 7 in modal views with navigation bar?

Question

The iOS 7 Transition Guide give a good hint how to change the UIStatusBarStyle dynamically in a UIViewController using

- (UIStatus         


        

Answer 1

You need a ViewController that's showing in Fullscreen to return the appropriate status bar infos. In your case: The NavigationController which contains ModalViewController needs to implement preferredStatusBarStyle and return UIStatusBarStyleLightContent.

A call to setNeedsStatusBarAppearanceUpdate is only necessary if the values a view controller returns actually change. When the view controller is first presented they are queried anyway.

Answer 2

All of the above work. However sometimes I find it really a pain in the bottom to go and change every instance in the Storyboard etc... So here's something that works for me that also involves subclassing.

First create the subclass:

@interface HHNavLightColorBarController : UINavigationController

@end

@implementation HHNavLightColorBarController

- (UIStatusBarStyle)preferredStatusBarStyle {
    return UIStatusBarStyleLightContent;
}
@end

Then using the magic of Objective-C and a little bit of the <objc/runtime.h>

When you have a reference of the view controller and your presenting it:

UINavigationController *navVC = ...; // Init in your usual way
object_setClass(navVC, [HHNavLightColorBarController class]);
[self presentViewController:nav animated:YES completion:^{
    NSLog(@"Launch Modal View Controller");
}];

Sometimes it seems a bit less intrusive. You could probably even create a category that checks to see if your kindOfClass is a navigation controller and auto do it for you. Anyways, the answer is above by jaetzold, I just found this to be handy.

Answer 3

Just look up if your app's rootViewController need to override -(UIStatusBarStyle)preferredStatusBarStyle method