How do you reference a textfield on a different view?

Question

Hi,

I have view 'A' which has a number of textfields. Pressing a button on view 'A' brings up view 'B' (with a picker to select multiple data). On close, view 'B' disappears and viola, the textfields are populated.

This should be straight forward solution but I can't seem to get my head around the problem - how do you reference the textfields on another view/controller. Or is this not possible in xcode?

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For example:

View 'A' is a form with several textfields. When you click on a button, another view (with a picker) pops up. User selects from the picker and then clicks on a button to save the values to View 'A' and then closes itself.

Or is there another way to do this?

Thanks.