ios - Issue with storyboard -

i want use storyboard in old project (which implemented using xibs) adding new features.

i have created storyboard file , added view controller , in identity inspector have specified class name view controller.

@implementation appdelegate   - (bool)application:(uiapplication *)application didfinishlaunchingwithoptions:(nsdictionary *)launchoptions {         // override point customization after application launch.      uinavigationcontroller *navcontroller = [[uinavigationcontroller alloc] initwithrootviewcontroller:[[firstviewcontroller alloc]initwithnibname:@"firstviewcontroller" bundle:[nsbundle mainbundle]]];     self.window.rootviewcontroller = navcontroller;     [self.window makekeyandvisible];     return yes }   @end 

in firstviewcontroller when click on button call gotosomeviewcontroller method pushes eventslistviewcontroller loading eventsscreen storyboard

@implementation firstviewcontroller

-(void)gotosomeviewcontroller {     eventslistviewcontroller *vc = [[uistoryboard storyboardwithname:@"eventsscreen" bundle:nil] instantiateinitialviewcontroller]; 

[controller pushviewcontroller:vc animated:yes]; }

@end

when i'm running application eventslistviewcontroller showing empty screen without views have added in storyboard.

based on information supplied there should no reason why mix nibs , storyboard.

i setup storyboard. remove app delegate code , setup project load storyboard specific device.

setup storyboard have initial view controller uinavigationcontroller has firstviewcontroller root of that.

then can drag secondviewcontroller button , select push move option. remove method gotoviewcontroller. there no reason why have setup this...