how to have a UIViewCojntroller that is instantiated out of a Storyboard be embedded within a UINavigationController

Question

I have a UIViewController called "Yellow" in my storyboard that I'm adding like this:

  _detailVC = [self.storyboard instantiateViewControllerWithIdentifier:@"Yellow"];
  _detailVC.location=cell.location;
  

  self.incomingView = _detailVC.view;
  [self addChildViewController:_detailVC];
  [self.view addSubview:self.incomingView];
  self.incomingView.alpha = 0;
  [_detailVC didMoveToParentViewController:self];

I need this UIViewController to exist within a UINavigationController as I'm using a push segue and it is giving me the following error:

*** Terminating app due to uncaught exception 'NSGenericException', reason: 'Could not find a navigation controller for segue 'pushDetailVC'. Push segues can only be used when the source controller is managed by an instance of UINavigationController.'

If I go to the view for the "Yellow" view controller, and "embed in Navigation Controller", I still get the same problem.

enter image description here

How would I embed this UIViewController in a UINavigationController so that the push segue works correctly?

You should not have to add the VC(Yellow), and have to add the NC. The reason is when you add VC, NC is not in hierarchy of VCs and for performing push segues NC is needed. — Yogesh Suthar
I get that and have it in a NC as can be seen in the image from IB; the NC isn't being recognized for some reason. — timpone
You didn't get what I am trying to say. You need to open NC not VC. — Yogesh Suthar

rdelmar rdelmar · Accepted Answer · 2014-11-09T05:07:54

When you instantiate a view controller from the storyboard, you don't automatically get any controller that it might be embedded in. You're telling the system to give you a DetailVC, and that's what it gives you. If you want the navigation controller, then you need to instantiate it, and it will automatically instantiate its rootViewController (which is Yellow) because its hooked up with a relationship segue.

UINavigationController *nav = [self.storyboard instantiateViewControllerWithIdentifier:@"Nav"];
_detailVC = (DetailVC *)nav.topViewController; // replace DetailVC with whatever your class name is
_detailVC.location=cell.location;

how to have a UIViewCojntroller that is instantiated out of a Storyboard be embedded within a UINavigationController

2 Answers