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.

Answer 2

Ran into the same issue and restarting XCode was no help. You can always right click the storyboard and select Open As > Source Code . Find your view controller element in the XML file and add a customClass attribute:

<viewController title="Login" id="TJH-Bg-q4u" customClass="XYZLoginViewController" sceneMemberID="viewController">
   ...
</viewController>

Manual override FTW :).

Answer 3

Check your project settings. xcode->targets->build phases->compile sources your viewcontroller's implemantation file must be added to this list.

Answer 4

For this to work you have to make sure of the following:

1) The element added to the storyboard is an UIViewController

2) The class you defined has the UIViewController as its superclass

@interface MapShownViewController : UIViewController

3) The Class is being correctly built in the project.

Answer 5

I've been running into this issue and tried all other solutions posted here.

The thing that worked for me was to set the correct super class after creating a custom class. Then you should be able to find and select it from the class dropdown.

eg

class LabsViewController: UITableViewController {

Answer 6

Check if you did choose the correct super class in your new class. Sometimes you create a view controller inherited by a UITableVIewController. This one can't be applied to a ViewController pattern in the Storyboard.

Answer 7

I had to set my custom class which inherit from UIViewController and act as table view controller to UITableViewController. I made simple trick and just changed my custom class inheritance to ": UITableViewController" and then i can set this class freely to controller. Of course after it was set i changed inheritance back.

Answer 8

I had the same issue with Xcode 7.1.1 on a Mac OSX app. I tried all the suggestions from the other answers – no success.

Finally I deleted my view controller files and created brand new ones.
Then it suddenly worked...

Answer 9

Just adding another possible solution that helped solve my problem since the others didn't.

I noticed that searching for my custom View Controller file using Command+Shift+O it was being found, but I couldn't see in which folder the file was, so I noticed that for some reason my custom class was missing from the project but still being found in the search.

All I had to do was to move the files to the project again and Voila!

Hope this can help someone in the future.