如何使用标签栏项添加导航栏以查看控制器

Question

I have an app that uses bottom tabs aswell as a side menu, to have the button that initiates the side menu i use the typical three line menu button, to put that there I have a Navigation Bar. With the bar in place there is no way I can get the bar to be on top of the screen. I built it with interface builder, and heres a screenshot. The question is how do i have the navigation bar alone without the other grey bar above it?

Answer 1

The issue you're encountering is due to the fact that you're manually creating a navigation bar for your view controller, instead of using the bar that you get for free by embedding the view controller in a tab bar controller, hence the reason you see two bars. The other answer suggesting hiding the auto-generated navigation bar is not the correct solution. Instead, you should place your menu button and view title in the auto-generated bar instead of manually creating your own (you almost never want to do that, in-fact).

So what you should do instead is set the title property of your view controller to be "News", and the leftBarButtonItem property of the view controller to be your hamburger menu button (an instance of UIBarButtonItem initialized with an image for the icon).

For example (inside your view controller's viewDidLoad method or wherever appropriate):

self.title = @"News";
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"menuIcon"] style:UIBarButtonItemStylePlain target:self action:@selector(showSideMenu)];

Answer 2

If you want to remove the topmost navigation bar you need use self.navigationController.navigationBarHidden = YES; for view controllers that used for tabs in UITabBarController :

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