Communicating between classes set up in nib, in code?

Posted by cannyboy on Stack Overflow See other posts from Stack Overflow or by cannyboy
Published on 2010-06-12T09:54:13Z Indexed on 2010/06/12 10:22 UTC
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Filed under:

iphone

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objective-c

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mvc

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uiviewcontroller

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nib

A beginner's question:

If, in your nib, you have the File's Owner linked to the ViewController class, and you also have a NSObject-derived class, how do you communicate between the ViewController class and the NSObject class within code?

For instance, suppose ScientificCalculatorView.xib looks like this

File's Owner  (class: ScientificCalculatorViewController)
FirstResponder
View
Calculator  (an object that has been linked to the Calculator class)

Obviously, I'd want Calculator to be reusable, so it could be used with a NormalCalculatorViewController or something like that. So that UI and the calculator code are separate. Does Calculator even need to be in the nib?

It's a beginners question, but I'm just trying to get my head around it.

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