UINavigationController without navigation bar?

You should be able to do the following:

self.navigationController.navigationBar.isHidden = true //Swift 5

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

In Xcode 4.3.2:

Select the navigation controller in the storyboard Select the Attributes Inspector in the (right) Utilities panel Under the Navigation Controller category you have two check boxes: [] Shows Navigation Bar [] Shows Toolbar

Worked for me...

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:

https://i.stack.imgur.com/UZbHX.png

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

https://i.stack.imgur.com/QuHcf.png

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;
     }

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.

All these answers still leave a space at the top for the status bar - add this line to remove that as well:

navController.navigationBar.isHidden = true
navController.accessibilityFrame = CGRect.zero