Pass data between ViewControllers in a UINavigationController

(续) this thread )

Suppose that I have the following view created:

http://cl.ly/1USw/content

“视图”按钮应该是按下一个新的“视图控制器”,它将显示乔希或艾尔的所有照片,具体取决于按下的按钮。

我的问题是 :

In the ViewController code, how do I determine which 'View' button is pushed (top or bottom)?

This is the code that I have:

- (IBAction) viewImageList {
    PhotoListViewController* photoListViewController = [[PhotoListViewController alloc] 
                                                        initWithNibName:@"PhotoListViewController" 
                                                        bundle:[NSBundle mainBundle]];

    // here, I want to dynamically pass in the name (Josh or Al) based on which 'View' button is pressed
    photoListViewController.ownerName = @"someName";

    [[self navigationController] pushViewController:photoListViewController animated:YES];
    [photoListViewController release];

}

Or if anyone have a different approach, I'd like to hear it :)