Navigation bar Hidden not working IOS

问题

Hi I'm new in iOS development. I've one main screen with navigation bar hidden true. From there I am navigating to another view using back segue. but when I click back it showing navigation bar on main screen. Here is my problem description.

In main screen onviewload I am doing :

self.navigationController.navigationBarHidden = YES;

once user go to another view using back segue in new controller, I'm doing

self.navigationController.navigationBarHidden = NO;

And now, if I click back it will show navigation bar on main window also which I don't want. Basically I want main screen without navigation bar and next window with navigation bar.

How to do this. Need Help. Thank you.

回答1:

Put that code in viewWillAppear instead of viewDidLoad, and it should work properly.

回答2:

-(void)viewWillAppear:(BOOL)animated
{
  [super viewWillAppear:animated];
  self.navigationController.navigationBarHidden = YES;
}

回答3:

I have a Tab viewcontroller consist of 4 tabs, one of my tab doesn't need navigationbar, but others need.

None of the previous answers solve my case, these code does.

//隐藏App导航条，使用RN自己的导航条
- (void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    self.navigationController.navigationBar.hidden = YES;
//    self.navigationController.navigationBarHidden = YES;    //这句是  **完全没** 个卵用
//    [self.navigationController setNavigationBarHidden:YES animated:NO];
}

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

//恢复App导航条
- (void)viewWillDisappear:(BOOL)animated{
    [super viewWillDisappear:animated];
    self.navigationController.navigationBar.hidden = NO;
//    self.navigationController.navigationBarHidden = NO;     //这句是  **完全没** 个卵用
    [self.navigationController setNavigationBarHidden:NO animated:NO];
}

回答4:

Don't use

self.navigationController.navigationBarHidden = YES;

You should use

self.navigationController.navigationBar.hidden = NO;

回答5:

For Swift 4, add following in viewWillAppear

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

来源：https://stackoverflow.com/questions/23075417/navigation-bar-hidden-not-working-ios

标签

objective-c

uinavigationcontroller