UINavigationController without navigation bar?

问题:

I have a universal app, and on the iPad version I'm using UISplitViewController to create an interface similar to the Mail app.

I was having trouble pushing new Detail views, so I decided to use a UINavigationController so I could just push and pop views as needed. However, I do not want to use the navigation view or a toolbar. But no matter what I do, I can't hide the navigation bar.

I've tried unchecking "Shows Navigation Bar" in IB, and I've also tried setting:

[self.navigationController setNavigationBarHidden:YES];

in the viewDidLoad/viewDidAppear/viewWillAppear. I've also tried it in each of the views that will be pushed. Nothing works.

Is there something I'm missing here? Is it possible to have a UINavigationController without a toolbar or navigation bar?

回答1:

You should be able to do the following:

self.navigationController.navigationBar.hidden = YES;

where self.navigationController is (obviously) an instance of UINavigationController. Seems to work for me, but I only briefly tested it before posting this.

回答2:

If you want no navigation bar, and you want the content to be adjusted up to where the navigation bar normally would be, you should use

self.navigationController.navigationBarHidden = YES;

This gives you a result like this:

Whereas self.navigationController.navigationBar.hidden = YES; gives you a space where the navigationBar should be. Like this:

回答3:

In Xcode 4.3.2:

1. Select the navigation controller in the storyboard
2. Select the Attributes Inspector in the (right) Utilities panel

3. Under the Navigation Controller category you have two check boxes:

   [] Shows Navigation Bar

   [] Shows Toolbar

Worked for me...

回答4:

Swift 4

I hide it in viewWillAppear

     override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)

        self.navigationController?.isNavigationBarHidden = true;
    }

Then you can put it back when you push a segue (if you want to have the back button on the next view)

     override func prepare(for segue: UIStoryboardSegue, sender: Any?) 
     {
        self.navigationController?.isNavigationBarHidden = false;
     }

回答5:

Swift 3 Programmatically

self.navigationController.isNavigationBarHidden = true

or

self.navigationController.navigationBar.isHidden = true

Note: I didn't see a difference between these two approaches testing on iOS 10.