iphone - How to hide or remove navigation Bar at the top? -

this code successful excuted "terms , condition page" open. 1 problem face 1 navigation bar show on top of page. how hide or remove navigation bar @ top of page ?

clsmainpageappdelegate.m

#import "clsmainpageappdelegate.h" #import "clstermsandconditionviewcontroller.h"  - (bool)application:(uiapplication *)application didfinishlaunchingwithoptions:(nsdictionary *)launchoptions {      uistoryboard *storyboard = [uistoryboard storyboardwithname:@"mainstoryboard" bundle:nil];     clstermsandconditionviewcontroller *ivc = [storyboard instantiateviewcontrollerwithidentifier:@"termsandconditioncontrol"];     uinavigationcontroller *navigationcontroller=[[uinavigationcontroller alloc] initwithrootviewcontroller:ivc];     self.window.rootviewcontroller=nil;     self.window.rootviewcontroller = navigationcontroller;     [self.window makekeyandvisible];  } 

have read documentation? uinavigationcontroller class reference

[navigationcontroller setnavigationbarhidden:yes];