Push/Present Modal View Controller

I have a table in my view controller (let's call it TVC1). I have rows in TVC1 that are used so the user can input some more data in addition to the data on TVC1. So, when someone taps a specific row in TVC1, it will show another view controller (let's call it TVC2). However, when TVC2 is shown, all of the data in TVC1 is cleared. How can I save the data in TVC1? Should I do it through the app delegate?

        DescriptionInputViewController *descriptionController = [[DescriptionInputViewController alloc] 
                                                             initWithNibName:@"DescriptionInputView" 
                                                             bundle:nil];

    [self presentModalViewController:navController animated:YES];
    [self.navigationController pushViewControlle开发者_如何学运维r:descriptionController animated:YES];
    [descriptionController release];

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In your code, you should be calling:

[self presentModalViewController:descriptionController animated:YES]

descriptionController is the view controller you are displaying.