How to disable navigation bar in iOS

Question

I would like to turn off the navigation bar when adding a child view and turn it back on after deleting the child view. How to do it. A similar action when displaying an action sheet.

Answer 1

Use (Objective-C):

[self.navigationController setNavigationBarHidden:YES animated:YES];

Answer 2

In Swift:

self.navigationController?.setNavigationBarHidden(true, animated: true)

Answer 3

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NSArray* allBarButtons = [self.navigationController.navigationBar.topItem.leftBarButtonItems arrayByAddingObjectsFromArray:self.navigationController.navigationBar.topItem.rightBarButtonItems];
for (UIBarButtonItem* barButton in allBarButtons) {
     barButton.enabled = NO;
}

Answer 4

self.navigationController.navigationBar.topItem.leftBarButtonItem.enabled = NO;
self.navigationController.navigationBar.topItem.rightBarButtonItem.enabled = NO;
self.navigationController.navigationBar.topItem.backBarButtonItem.enabled = NO;

Answer 5

[[self navigationController] setNavigationBarHidden: YES animated: YES];