Open Radar

 
Area:
UIKit

Summary:
-[UIViewController hidesBottomBarWhenPushed] property value is ignored when the view is restored during the app state restoration flow.

During the restoration, UINavigationController checks the value of the hidesBottomBarWhenPushed property (see attached screenshot) although the bottom bar is not hidden unless pop/push operation is called.

The workaround is to hide the toolbar in the decodeRestorableStateWithCoder method

- (void)decodeRestorableStateWithCoder:(NSCoder *)coder {
    [super decodeRestorableStateWithCoder:coder];
    [self.navigationController setToolbarHidden:self.hidesBottomBarWhenPushed animated:NO];
}

Steps to Reproduce:
1. Create empty app with the toolbar
2. Add UIViewController inside UINavigationController.
3. Set the value of -[UIViewController hidesBottomBarWhenPushed] = YES
4. Preserve app state with the UIViewController on the top
5. Restore the app state

Expected Results:
The toolbar is hidden

Actual Results:
The toolbar is not hidden

Version:
iOS 10.3.1