How to add navigation controller programmatically?

Question

I use code below, but it is not loaded:

UIStoryboard * storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
self.mapViewController = [storyboard instantiateViewControllerWithIdentifier:@"MapViewController"];
self.navigationController = [[UINavigationController alloc]initWithRootViewController:self];

self.navigationBar = [[UINavigationBar alloc]init];
[self.view addSubview:self.navigationBar];

[self.navigationController.navigationController pushViewController:self.mapViewController animated:YES];

self.navigationController.navigationController will always be nil. A navigation controller can never be in another navigation controller. — rmaddy
– rmaddy, Commented Feb 6, 2014 at 17:32
It also makes no sense to create and an assign a navigation controller like this in a view controller. Normally you would create the navigation controller at a higher level and set it up with a root view controller. Then when the view controller want to push another view controller (like here), you simply push the new view controller onto self.navigationController. — rmaddy
– rmaddy, Commented Feb 6, 2014 at 17:34
You should read the "View Controller Programming Guide for iOS". — rmaddy
– rmaddy, Commented Feb 6, 2014 at 17:35

freelancer · Accepted Answer · 2014-02-06 17:49:24Z

8

try as below

UIViewController *bbp=[[UIViewController alloc]initWithNibName:@"UIViewController" bundle:nil];
UINavigationController *passcodeNavigationController = [[UINavigationController alloc] initWithRootViewController:bbp];
// [self.navigationController presentModalViewController:passcodeNavigationController animated:YES];
  [self.navigationController pushViewController:passcodeNavigationController animated:YES];
  [passcodeNavigationController release];

answered Feb 6, 2014 at 17:49

freelancer

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2 Comments

Mudriy Ilya Over a year ago

Thanks, I looked at a lot of issues, but only this answer helped me :) Works at iOS 9.

Ben Shabat Over a year ago

I'm getting the next error:'release' is unavailable: not available in automatic reference counting mode

J3soon · Accepted Answer · 2016-11-22 12:40:58Z

Add this code to your AppDelegate.m in the didFinishLaunchingWithOptions function:

UIStoryboard *sb = [UIStoryboard storyboardWithName:@"YOUR_STORYBOARD_NAME" bundle:nil];
yourViewControllerClassName *vc = [sb instantiateViewControllerWithIdentifier:@"YOUR_VIEWCONTROLLER_ID"];
self.navigationController = [[UINavigationController alloc] initWithRootViewController:vc];
self.window.rootViewController = self.navigationController;
[self.window makeKeyAndVisible];

yourViewControllerClassName is the .h and .m file name that is linked to your viewController.

YOUR_STORYBOARD_NAME is the name of your .storyboard file. For example, fill in Main if your .storyboard file is called Main.storyboard.

YOUR_VIEWCONTROLLER_ID is the ID for your veiwController. You can edit it in the Identity inspector.(See photo)

Hope this helps:)

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