preferredStatusBarStyle isn't called

Question

I followed this thread to override -preferredStatusBarStyle, but it isn't called. Are there any options that I can change to enable it? (I'm using XIBs in my project.)

Answer 1

For anyone still struggling with this, this simple extension in swift should fix the problem for you.

extension UINavigationController {
    override open var childViewControllerForStatusBarStyle: UIViewController? {
        return self.topViewController
    }
}

Answer 2

UIStatusBarStyle in iOS 7

The status bar in iOS 7 is transparent, the view behind it shows through.

The style of the status bar refers to the appearances of its content. In iOS 7, the status bar content is either dark (UIStatusBarStyleDefault) or light (UIStatusBarStyleLightContent). Both UIStatusBarStyleBlackTranslucent and UIStatusBarStyleBlackOpaque are deprecated in iOS 7.0. Use UIStatusBarStyleLightContent instead.

How to change UIStatusBarStyle

If below the status bar is a navigation bar, the status bar style will be adjusted to match the navigation bar style (UINavigationBar.barStyle):

Specifically, if the navigation bar style is UIBarStyleDefault, the status bar style will be UIStatusBarStyleDefault; if the navigation bar style is UIBarStyleBlack, the status bar style will be UIStatusBarStyleLightContent.

If there is no navigation bar below the status bar, the status bar style can be controlled and changed by an individual view controller while the app runs.

-[UIViewController preferredStatusBarStyle] is a new method added in iOS 7. It can be overridden to return the preferred status bar style:

- (UIStatusBarStyle)preferredStatusBarStyle
  {
      return UIStatusBarStyleLightContent;
  }

If the status bar style should be controlled by a child view controller instead of self, override -[UIViewController childViewControllerForStatusBarStyle] to return that child view controller.

If you prefer to opt out of this behavior and set the status bar style by using the -[UIApplication statusBarStyle] method, add the UIViewControllerBasedStatusBarAppearance key to an app’s Info.plist file and give it the value NO.