gistfile1.m

UISearchBar *searchBar = [[UISearchBar alloc] init];
self.navigationItem.titleView = searchBar;

UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"cancel", @"Cancel")
                                                                 style:UIBarButtonSystemItemCancel
                                                                target:self
                                                                action:@selector(cancelButtonClicked)];
self.navigationItem.rightBarButtonItem = cancelButton;