Hide StatusBar, TabBar, NavigationBar

1. To hide the status bar:

[[UIApplication shareApplication] setStatusBarHidden:YES];


2. To hide the navigation bar:

self.navigationController.navigationBarHidden = YES;


3. To hide the tab bar:

MyController *myController = [[MyController alloc] init ];
myController.hidesBottomBarWhenPushed = YES;
[self.navigationController pushViewController:myController animated:YES];
[myController release];