Objective-C: Help - my xib won't show?

I have the following Objective-C code:

MainMenu *main= [[MainMenu alloc] initWithNibName:nil bundle:nil];
[[self navigationController]pushViewController:main animated:YES];
NSLog(@"hello");

I have a class called 'MainMenu' with a corresponding header file and x开发者_开发百科ib file. No matter what I do, it simply won't show. I have confirmed that the code gets to the above, because of the NSLog('hello').

I've been pulling my hair out for hours now and I simply cannot get to the bottom of it.

I hope someone can help,

Edit - still having problems...

Here are some screenshots of my project setup:

Ok, so I tried this:

MainMenu *main= [[MainMenu alloc] initWithNibName:nil bundle:nil];
[[self navigationController]pushViewController:main animated:YES];
[self.view addSubview:main.view];

But it still doesn't work...

Many thanks in advance,

The fact that initWithNibName is nil should not be the problem because if it is given nil it looks for a nib with the exact name of the class.

Two things:

1) Make sure you have run a clean recently and make sure that file is correctly being loaded.

2) Make sure navigationController is not nil, if it is then you need to make sure you make a navigation controller if you are not intending on using a navigation controller, consider using:

- (void)presentModalViewController:(UIViewController *)modalViewController 
                          animated:(BOOL)animated

Why are you setting the nibName to nil? If the name of the nib is MainMenu, then you want:

MainMenu *main= [[MainMenu alloc] initWithNibName:@"MainMenu" bundle:nil];
[self.navigationController pushViewController:main animated:YES];
[main release];

Are you sure that you have a UINavigationController in order to push a new view?

Hope that Helps!

Dont pull your hair just look at your code closely: You have nil in your initWithNibName. Whats MainMenu is it a viewController or what ? and place your correct nib for your to get Hello.

Updated as asked :

MainMenu *main= (MainMenu *)[MainMenu alloc] init];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:main];
[self.navigationController presentModalViewController:nav animated:YES];
NSLog(@"hello");

I guess the issue is that you do not have a navigation controller set up .Try to present the view controller by

[self presentModalViewController:main animated:YES];

Verify that the object owner is in fact MainMenu and the view is connected.

In the MainMenu NIB, select File's Owner and the click on the Identity Inspector. Class should match your VC class name.

Then select the main View in your NIB and click on the Connections Inspector. The view outlet should be connected to your File's Owner.

If those are both set correctly, then post some more surrounding code. Notable point, if those are both set,

MainMenu * main= [[MainMenu alloc] initWithNibName:nil bundle:nil];
[self.navigationController pushViewController:main animated:YES];

will load the correct NIB and display it.

What are you seeing? Another point if MainMenu is a subclass of some other VC with a NIB you will have to change the base class' init to override the default behavior, for example:

    self = [super initWithNibName:nibNameOrNil == nil ? @"BaseViewController" : nibNameOrNil bundle:nibBundleOrNil]

But in that case you would have to specific the NIB that will override the base view controller's.

Post more code and let us know what you are seeing when you run.