initWithNibName .... method not firing - iphone

Question

In my navigation based application, initWithNibName method does not called/fire
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
I'm defining rootViewController (calViewController) in appdelegate like this
calViewController *objCalViewController = (calViewController *) [navController topViewController];
objCalViewController.context = [self managedObjectContext];
[window addSubview:navController.view];
[window makeKeyAndVisible];
Is this is the issue? Please give me a help

Answer 1

When your UIViewController is defined in a nib file or Storyboard (usually as an IBOutlet), initWithNibName:bundle: is not called, rather initWithCoder: is. This is the case when you use Interface Builder to set your UIViewController as part of UITabBarController or UINavigationController, and almost always when using Storyboards.

Answer 2

in your appdelegate.m do like this
calViewController *objCalViewController = [[calViewController alloc] initWithNibName:#"WebViewController_iPhone" bundle:nil];
objCalViewController.managedObjectContext = self.managedObjectContext;
navController = [[UINavigationController alloc] initWithRootViewController:objCalViewController];
[self.window setRootViewController:navController];
[window makeKeyAndVisible];

Answer 3

Ok lets say i have a viewController named TCViewController with
TCViewController.h, TCViewController.m and TCViewController.xib
and in TCViewController.m
i am overriding the below method.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
In my RootViewController i want to initialize TCViewController like this
RootViewController.m
-(void)viewDidLoad //not necessarily this one, can be any method
{
// This initialization calls the initWithNibname method implemented in TCViewController.m
TCViewController *viewController = [[TCViewController alloc] initWithNibName:#"TCViewController" bundle:nil];
[self.navigationController pushViewController:viewController animated:YES];
}
If you initialize a viewController like this, control will pass to the initWithNibName method in your subclass if you have implemented it.