Basic Question: Copying an array from one viewcontroller to another ?

[K2mia]

Hi, I'm sure this is basic and I am missing the obvious.

I have an app that has two view controllers, the delegate is used to switch between the two controllers. Lets call these ViewController1 and ViewController2.

If I have an NSMutableArray *arr defined and loaded with data in ViewController1 what is the best way to use this data in ViewController2?

I have tried the following in ViewController2's viewDidLoad method but this doesn't work:

TMCClientAppDelegate *mainDelegate = (MyAppDelegate *)[[UIApplication sharedApplication] delegate];
arr = [mainDelegate.viewController1.arr copy];

In MyAppDelegate I have the property viewController1 created as the instance of ViewController1, and arr is a property of ViewController1, so am not sure why I cannot access it this way.

Anyone see whats wrong here or can suggest a better way to do this?

Thanks!
Andy

[K2mia]

I found the answer, I was referencing the wrong ViewController class and accessing the wrong data. One question remains though, is there a better way to accomplish this?

Thanks,
Andy