navigationBar isn't showing when I put a UINavigationController in a UIPopoverController - objective-c

Question

I'm adding a UIViewController to a UINavigationController and then setting a UIPopoverController's view to the UINavigationController. Everything is working great except that I don't get a navigationBar at the top of the popoverController. I'm creating everything like this:
QueryViewController *puvc = [[QueryViewController alloc] autorelease];
UINavigationController *nc = [[UINavigationController alloc] autorelease];
[nc pushViewController:puvc animated:YES];
self.popUp = [[[UIPopoverController alloc] initWithContentViewController:nc] autorelease];
[self.popUp presentPopoverFromBarButtonItem:[self.toolbarItems objectAtIndex:0] permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
self.popUp.delegate = self;
I've tried to set navigationBarHidden = NO and it still doesn't show up. I have this code in my viewDidLoad of my QueryViewController:
self.contentSizeForViewInPopover = CGSizeMake(500.0, 500.0);
self.title = #"Queries";
Is there something that I'm missing to display the navigationBar? I am already in a UINavigationController for my main screen, could this be part of my problem?

Answer 1

QueryViewController *puvc = [[QueryViewController alloc] autorelease];
UINavigationController *nc = [[UINavigationController alloc] autorelease];
Maybe your code is wrong. Where is init methods?
You have to init both your QueryViewController and UINavigationController. For the second use initWithRootViewController method.
QueryViewController *puvc = [[[QueryViewController alloc] init] autorelease];
UINavigationController *nc = [[[UINavigationController alloc] initWithRootViewController:pucv] autorelease];
//[nc pushViewController:puvc animated:YES];
If you use initWithRootViewController it's not necessary to push puvc instance.
You could try also this (I like to release memory explicity, not using autorelease).
QueryViewController *puvc = [[QueryViewController alloc] init];
UINavigationController *nc = [[UINavigationController alloc] initWithRootViewController:pucv];
//[nc pushViewController:puvc animated:YES];
Then at the end of your code snippet remember to release puvc and nc.
[puvc release];
[nc release];
P.S. Check the code because I've written without XCode.