ios - Setting NavigationController as an initial controller -

i have 2 navigation controllers. how can set second 1 - stopwatch initial navigation controller?

- (bool)application:(uiapplication *)application didfinishlaunchingwithoptions:(nsdictionary *)launchoptions {      // override point customization after application launch.     self.window = [[uiwindow alloc] initwithframe:[[uiscreen mainscreen] bounds]];     self.window.backgroundcolor = [uicolor whitecolor];      self.swipebetweenvc = [swipe new];     [self setuprootviewcontrollerforwindow];     self.window.rootviewcontroller = self.swipebetweenvc;      [self.window makekeyandvisible];      return yes; }  - (void)setuprootviewcontrollerforwindow {     uistoryboard *storyboard1 = [uistoryboard storyboardwithname:@"main" bundle: nil];     stopwatch *controller1 = (stopwatch *)[storyboard1 instantiateviewcontrollerwithidentifier:@"stopwatch"];     uinavigationcontroller *stopwatch = [[uinavigationcontroller alloc] initwithrootviewcontroller:controller1];      namescontroller *controller2 = (namescontroller *)[storyboard1 instantiateviewcontrollerwithidentifier:@"namescontroller"];     uinavigationcontroller *nameslist = [[uinavigationcontroller alloc] initwithrootviewcontroller:controller2];      self.swipebetweenvc.viewcontrollers = @[nameslist, stopwatch]; } 

just put stopwatch view first

 self.swipebetweenvc.viewcontrollers = @[stopwatch, nameslist];