presentModalViewController horizontally instead of vertically

How can I make the modal view controller be presented horizontally instead of vertically.

Current code:

开发者_StackOverflow中文版ListSelectViewController *nextScreen = [[ListSelectViewController alloc] init];
[self.navigationController presentModalViewController:nextScreen animated:YES];
[nextScreen release];

The only options available with presentModalViewController:animated: are:

• UIModalTransitionStyleCoverVertical (default)
• UIModalTransitionStyleFlipHorizontal
• UIModalTransitionStyleCrossDissolve
• UIModalTransitionStylePartialCurl

Since you're using a navigationController, perhaps what you want to do instead is:

[self.navigationController pushViewController:nextScreen animated:YES];