Retain original status bar appearance when using custom presentation controller - ios

Question

I present a navigation controller from controller contained in navigation controller using custom UIPresentationController.
My problem is that I cannot retain original status bar appearance. I don't want to give control over status bar to newly presented modal, instead I want to leave it up to source controller. How can I do this?
I played with modalPresentationStyle but I was not able to achieve anything with it, the only reasonable value in my case is UIModalPresentationCustom, otherwise nothing works or gets pretty weird.
I do not implement preferredStatusBarStyle anywhere because on iOS 9 navigation controller picks the right one from navigation bar style.
self.stackTransitionDelegate = [[StackTransitionDelegate alloc] init];
controller.modalPresentationStyle = UIModalPresentationCustom;
controller.transitioningDelegate = self.stackTransitionDelegate;
[self.presentationContext presentViewController:controller animated:YES completion:nil];
Transition itself is half modal, that means that some part of source controller remains on screen. This is why the UIPresentationController subclass implements shouldRemovePresentersView
- (BOOL)shouldPresentInFullscreen {
return NO;
}
Update:
The following radar: (https://openradar.appspot.com/22565293) describes the problem and with help of private method I am able to prevent presented controller from capturing status bar appearance.
- (BOOL)_shouldChangeStatusBarViewController {
if([self.presentedViewController isBeingPresented]) {
return NO;
}
return YES;
}
I wonder if there is any official way of achieving the same.

Answer 1

Here's how I got around this:
- (UIStatusBarStyle)preferredStatusBarStyle {
UIViewController *viewController = self.presentingViewController;
while ([viewController childViewControllerForStatusBarStyle]) {
viewController = [viewController childViewControllerForStatusBarStyle];
}
return [viewController preferredStatusBarStyle];
}