Storyboard uiviewcontroller, 'custom class' not showing in drop down

Question

I have a UIViewController I created in my apps storyboard, as well as a custom UIViewController subclass which I added to the project (and is correctly in the compile phase

Answer 1

I was fairly frustrated with this issue as none of the answers above had solved my problem.

In my case: I was in the middle of working on swift view controller file and was making active changes (such as creating a custom collection cell class). I had not finished the code block and left it open like so :

class tableViewCell: UITableViewCell { 
}
class collectionCell: 


class viewController: UIViewController {
     override func viewDidLoad(){
     super.viewDidload()

     }

}

Note the incomplete code block 'collectionCell2' This was enough for xcode to not recognize my viewController file as such. Once I completed this block the file reappeared in my xcode as an option.

Very silly and simple.