I've been working on an app for a while now and it pushes a view controller from the AppDelegate. When it does the navigation bar that was previously on the view controller being pushed disappears. Right now it's a static nav bar (not part of a navigation controller), but it has been previously and still didn't work. What am I doing wrong? Is there some sort of workaround?

This is the code in the AppDelegate that I'm using to push it:

```
var storyboard = UIStoryboard(name: "Main", bundle: nil)
var PostView: AnyObject! = storyboard.instantiateViewControllerWithIdentifier("NewView")

var rootViewController = self.window!.rootViewController as! UINavigationController
rootViewController.pushViewController(PostView as! UIViewController, animated: true)

```

`pushViewController` is the one I'm trying to push.