gistfile1.m

ProjectsAppDelegate *appDelegate = (ProjectsAppDelegate *)[[UIApplication sharedApplication] delegate];
UIViewAnimationTransition  trans = UIViewAnimationTransitionFlipFromLeft;
[UIView beginAnimations: nil context: nil];
[UIView setAnimationTransition: trans forView: [appDelegate window] cache: YES];
[UIView setAnimationDuration:1.0];
[self.navigationController pushViewController:self.projectViewController animated:NO];
[UIView commitAnimations];