IB - Can't assign class for a View Controller

Question

I'm quite new to IOS developpement, and I'm facing a problem here that I haven't encountered before. Here's what I have :

I created a project, added some ViewControllers attached to their own classes. But now, I just added a new ViewController in the storyboard. Then I created a new Objective-C class (with is a subclass of UIViewController). The problem is that in IB, I can't link the ViewController to the newly created class, as I simply don't have the class in the list provided by IB (see the image below). My new class is called MapShownViewController, but as you can see on the image, it's not available.

It worked well for all my other classes but not for this one.

Here's the MapShownViewController.h :

#import <UIKit/UIKit.h>

@interface MapShownViewController : UIViewController

@end

And the MapShownViewController.m :

#import "MapShownViewController.h"

@interface MapShownViewController ()

@end

@implementation MapShownViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
}

- (void)viewDidUnload
{
    [super viewDidUnload];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

@end

Can someone explain me what I made wrong please ?

Answer 1

I had this exact problem and it drove me mad. I first noticed it after upgrading XCode to 4.4 from 4.1. I had an existing project that I had been working on in the older version of XCode, and I continued to work on it in 4.4. I did exactly what you did and created a new View in the story board and then created the sub-class files, but the class just was not avaiable in the Custom Class dropdown in IB. After much Googling and frustration I resorted to Quit Xcode (complete quit, not just close) and then re-start it. Then as if by magic it all started working and the new class was immediatley available in the IB custom class dropdown.