Accessing parent view controller (custom) properties

Question

I have written a UITabBarController subclass (called MainViewController) and added a few instance variables, specifically a venue of type Venue. Ea

Answer 1

You're doing something completely wrong. parentViewController is declared as a UIViewController. NSLoging it outputs its real type due to the wonders of polymorphism.

UIViewController doesn't have a Venue member. Your MainViewController does. Casting it is, in fact, the right answer. Make sure to import MainViewController.h as well.

#import "MainViewController.h"
[...]
NSString *name = ((MainViewController *)self.parentViewController)).venue.name;

Also make sure, of course, that venue is declared as a @property of MainViewController, and name is a @property of Venue.