presentModalViewController not responding from NSObject class
<p>I have to need to call a presentModalViewController from NSObject class.</p>

<pre><code>ViewController *controller = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil];
        controller.delegate = self;
        controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;

    [[appDelegate navigationController] presentModalViewController:controller animated:YES];
    [controller release];
</code></pre>

<p>Above code is working fine for iPhone but not responding for iPad View.</p>
