sharing objects in Objective-C

This is a noob question. If I have a ViewController and inside that class I have an object called UserInfo and other ViewController, lets just call it X,Y,Z, etc..etc.

W开发者_开发技巧hat do I need to do so that those X,Y,Z can use the information of UserInfo?

Well I can have another info called UserInfo inside X,Y,Z and pass UserInfo inside, but I don't think this is good OOP technique. I think inheritance is needed here... but I don't think that it is right too, as the only commonality they have is only the UserInfo

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View controllers are just objects, you have to remember that.

If you're in your first view controller and it has a property NSString *aString to pass it to the next view controller you just make the second view controller's NSString *aString property equal to the first one.

Basically do this:

MyNextViewController *viewControllerTwo = [[MyNextViewController alloc] initWithNibName:nil bundle:nil];
[viewControllerTwo setAString:self.aString];

if you subclass all you inherit are the properties, and not their values.