iOS如何隐藏NavigationBar

//隐藏NavigationBar

-(void) viewWillAppear:(BOOL)animated{

    

    [self.navigationControllersetNavigationBarHidden:YESanimated:YES]; //设置隐藏

    [super viewWillAppear:animated];

}

-(void) viewWillDisappear:(BOOL)animated{

    [self.navigationControllersetNavigationBarHidden:NOanimated:YES];

    [super viewWillDisappear:animated];

        

}