iPhone: Show modal UITableViewController with Navigation bar

I am showing a modal view which is a UITableViewController class. For some reason it won't show the navigation bar when I show it. Here is my code:

SettingsCreateAccount *detailViewController = [[SettingsCreateAccount alloc] initWithStyle:UITableViewStyleGrouped];
    detailViewController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
    detailViewController.navigationController.navigationBarHidden = NO;
    [self.navigationController presentModalViewController:detailViewController animated:YES];
    detailViewController = nil;
    [detailViewController release];

I thought it was shown by default? If it helps, I am calling this from another class that is also a UITableViewController managed by a UINavigationController. Ideas?

When you present a modal view controller it does not use any existing navigation controllers or navigation bars. If all you want is to display a navigation bar, you need to add the navigation bar as a subview of your modal view and present it as you're doing.

If you want to present a modal view controller with navigation functionality, you need to present a modal navigation controller containing your detail view controller instead, like so:

SettingsCreateAccount *detailViewController = [[SettingsCreateAccount alloc] initWithStyle:UITableViewStyleGrouped];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:detailViewController];
[detailViewController release];

navController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
[self presentModalViewController:navController animated:YES];
[navController release];

Your modal controller will manage its own navigation stack.

Here is one way to display navigation bar for those who are using storyboards, suggested by Apple's Tutorial on Storyboard.

Because a modal view controller doesn’t get added to the navigation stack, it doesn’t get a navigation bar from the table view controller’s navigation controller. To give the view controller a navigation bar when presented modally, embed it in its own navigation controller.

1. In the outline view, select View Controller.
2. With the view controller selected, choose Editor > Embed In > Navigation Controller.

On iOS 7 and you just want a navigation bar on your modal view controller to show a title and some buttons? Try this magic in your UITableViewController:

// in the .h
@property (strong) UINavigationBar* navigationBar;

//in the .m
- (void)viewDidLoad {
    [super viewDidLoad];

    self.navigationItem.title = @"Awesome";
    self.navigationBar = [[UINavigationBar alloc] initWithFrame:CGRectZero];
    [self.view addSubview:_navigationBar];
    [self.navigationBar pushNavigationItem:self.navigationItem animated:NO];
}

-(void)layoutNavigationBar{
    self.navigationBar.frame = CGRectMake(0, self.tableView.contentOffset.y, self.tableView.frame.size.width, self.topLayoutGuide.length + 44);
    self.tableView.contentInset = UIEdgeInsetsMake(self.navigationBar.frame.size.height, 0, 0, 0);
}

-(void)scrollViewDidScroll:(UIScrollView *)scrollView{
    //no need to call super
    [self layoutNavigationBar];
}

-(void)viewDidLayoutSubviews{
    [super viewDidLayoutSubviews];
    [self layoutNavigationBar];
}

I want to share how the accepted solution can be used in projects with storyboards:

The simple approach is to put in a storyboard blank navigation controller before the VC which is to be presented modally, so the relations look like:

(Presenter VC) -> presents modally -> (navigation controller having a controller to be presented as its root).

We've tried this approach for a while and noticed that our storyboards become "polluted" by a large number of such intermediate navigation controllers when each! of them is used exclusively for one! presentation of some other controller, that we want to be presented modally with navigation bar.

Our current solution is to encapsulate the code from accepted answer to a custom segue:

#import "ModalPresentationWithNavigationBarSegue.h"

@implementation ModalPresentationWithNavigationBarSegue

- (void)perform {
    UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:self.destinationViewController];

    [self.sourceViewController presentViewController:navigationController animated:YES completion:nil];
}
@end

Having this segue in our project we do not create intermediate navigation controllers in our storyboards anymore, we just use this ModalPresentationWithNavigationBarSegue like:

Presenter VC --> Presentee VC

I hope that this answer will be helpful to people who like to avoid unnecessary duplication in their apps storyboards.