How does one access a super's view controller?

Question

I have a problem and I will try to explain the issue:

1. I have one main UIViewController (Whole screen)
2. I have one secondary UIViewCo

Answer 1

In your secondary controller, try

id mainViewController = [self.view.superview nextResponder];

and check if this is the view controller you're looking for.

Apple's documentation of -[UIResponder nextResponder]:

UIView implements this method by returning the UIViewController object that manages it (if it has one) or its superview (if it doesn’t)