ios - App delegate issues with multiple view controllers -

i created tab bar controller , implemented in app delegate before implemented other view controller.i don't know how use call them orderly.please tell me how make them arrange like.

@interface appdelegate () {     uinavigationcontroller *navigation; } @property (strong, nonatomic) jasidepanelcontroller *viewcontroller; @property (strong, nonatomic) uitabbarcontroller *this;   @end  @implementation appdelegate @synthesize viewcontroller = _viewcontroller;   - (bool)application:(uiapplication *)application didfinishlaunchingwithoptions:(nsdictionary *)launchoptions {     // override point customization after application launch.      [[uiapplication sharedapplication] setstatusbarstyle:uistatusbarstylelightcontent];      self.window = [[uiwindow alloc] initwithframe:[[uiscreen mainscreen] bounds]];     navigation = [[uinavigationcontroller alloc] initwithrootviewcontroller:[[viewcontroller alloc] init]];      self.window.rootviewcontroller = navigation;  //uiwindow *window = [[uiwindow alloc] initwithframe:[[uiscreen mainscreen] bounds]]; //        self.window = window;      self.viewcontroller = [[jasidepanelcontroller alloc] init];     self.viewcontroller.shoulddelegateautorotatetovisiblepanel = no;      self.viewcontroller.leftpanel = [[leftviewcontroller alloc] init];        uiviewcontroller *viewcontroller1=[[homeview alloc]init];     uiviewcontroller *viewcontroller2=[[speciality alloc]init];     uiviewcontroller *viewcontroller3=[[activity alloc]init];     uiviewcontroller *viewcontroller4 =[[notification alloc]init];     uiviewcontroller *viewcontroller5 =[[profile alloc]init];      viewcontroller1.view.backgroundcolor = [uicolor whitecolor];     viewcontroller2.view.backgroundcolor = [uicolor whitecolor];     viewcontroller3.view.backgroundcolor = [uicolor whitecolor];     viewcontroller4.view.backgroundcolor = [uicolor whitecolor];     viewcontroller5.view.backgroundcolor = [uicolor whitecolor];        uinavigationcontroller *navcontroller1=[[uinavigationcontroller alloc] initwithrootviewcontroller:viewcontroller1];     uinavigationcontroller *navcontroller2=[[uinavigationcontroller alloc] initwithrootviewcontroller:viewcontroller2];     uinavigationcontroller *navcontroller3=[[uinavigationcontroller alloc] initwithrootviewcontroller:viewcontroller3];     uinavigationcontroller *navcontroller4 =[[uinavigationcontroller alloc] initwithrootviewcontroller:viewcontroller4];     uinavigationcontroller *navcontroller5 =[[uinavigationcontroller alloc] initwithrootviewcontroller:viewcontroller5];       viewcontroller1.title = @"home";     viewcontroller2.title = @"speciality";     viewcontroller3.title = @"activity";     viewcontroller4.title = @"notification";     viewcontroller5.title = @"profile";      navcontroller1.tabbaritem.image = [uiimage imagenamed:@"home"];     navcontroller2.tabbaritem.image = [uiimage imagenamed:@"special"];     navcontroller3.tabbaritem.image = [uiimage imagenamed:@"activity"];     navcontroller4.tabbaritem.image = [uiimage imagenamed:@"notify"];     navcontroller5.tabbaritem.image = [uiimage imagenamed:@"pro"];      self.this = [[uitabbarcontroller alloc] init];      self.this.viewcontrollers=[nsarray arraywithobjects:navcontroller1,navcontroller2,navcontroller3,navcontroller4,navcontroller5, nil];      self.this.tabbar.bartintcolor =  rgbcolor(249, 178, 131);      self.viewcontroller.centerpanel = _this;       [self.window makekeyandvisible];     return yes; } 

here, set window's root controller navigation controller:

self.window.rootviewcontroller = navigation; 

and go on instantiate handful of other nav controllers , add them tab controller. it's not clear question you're trying achieve, if want app use tab controller, you'll want set window's root controller tab controller, not navigation controller.