iOS-NavigationBar隐藏/显示

Question

I have a master viewController and many detail viewController . Master viewController doesn't have any UINavigationBar but detail viewController has UINavigationBar . So I have some problem. When I swipe from detailVC to masterVC UINavigationBar hiding in detailVC

Have you any solution this?

I use these methods (master viewController )

 -(void)viewWillAppear:(BOOL)animated{

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

    }

(detail viewController )

-(void)viewWillAppear:(BOOL)animated{
     [super viewWillAppear:animated];
    [self.navigationController setNavigationBarHidden:NO animated:YES];
}

Answer 1

Finally

I have solved this issue.

I wrote UINavigationBar hiding code for firstVC in the viewDidAppear method.

-(void)viewDidAppear:(BOOL)animated{

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

}