Is it possible to check whether an identifier exists in a storyboard before instantiating the object?

Question

In my code I have this line, but I was wondering if there is way to check whether @\"SomeController\" exists before I use it with the \"instantiateViewControllerWit

Answer 1

As Tom said, the best solution to this problem is the try-catch block:

@try {
        UIViewController *newViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"identifier"];

    }
    @catch (NSException *exception) {
        UIAlertView *catchView;

        catchView = [[UIAlertView alloc]
                     initWithTitle: NSLocalizedString(@"Error", @"Error")
                     message: NSLocalizedString(@"Identifier not found on SB".", @"Error")
                     delegate: self
                     cancelButtonTitle: NSLocalizedString(@"OK", @"Error") otherButtonTitles: nil];

        [catchView show];
    }

I hope it helps! even though the answer is really late.