Instance of the ViewController

I want to access the current ViewController.

I have a TabBar with a NavBar and there is a ViewController in it. In this ViewController (TableView) I made a "pushViewController" to a new ViewController.

How can I access this one in another class. If I do:

[(MyTestDetailViewController *)[[(UINavigationController *) [appDelegate.myTabBarController selectedViewController] viewControllers] objectAtIndex: 0] myMethod:testArg1 withArgs:testArg2];

the method of the first ViewController is calle开发者_运维知识库d (it also have the same myMethod:withArgs in it), but not this one of the current view (the pushed one).

What's wrong here? Does anyone know?

Thanks a lot in advance & Best Regards.

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The UINavigationController implements the visibleViewController property for this purpose.

Try this:

[(MyTestDetailViewController *)[(UINavigationController *)[appDelegate.myTabBarController selectedViewController] visibleViewController] myMethod:testArg1 withArgs:testArg2];