ios - loading Tabbar controller from view controller -

i working project in have have login page , after successful login should have tabbar view (i using tab bar controller) when try load tab bar controller using following code.nothing works out.

loginsuccess *viewcontroller = [[loginsuccess alloc] initwithnibname:@"loginsuccess" bundle:nil];         [self.view addsubview:viewcontroller.tabbarcontroller.view];         [viewcontroller release]; 

please me.

i same work me call appdelegate after success of login response [mappdelegate loadtabbar];//call function in delegate file load tabbar view whom code follow

#pragma mark - #pragma mark load tabbar -(void)loadtabbar {     self.tabbarcontroller = [[uitabbarcontroller alloc] init];     tabbarcontroller.delegate = self;      myalarmvc *myalarmvc = [[myalarmvc alloc] initwithnibname:@"myalarmvc" bundle:nil];     uinavigationcontroller *myalarmnvc = [[uinavigationcontroller alloc] initwithrootviewcontroller:myalarmvc];     myalarmnvc.navigationbar.tintcolor = [uicolor whitecolor];     [myalarmvc release];       myvideosvc *myvideovc = [[myvideosvc alloc] initwithnibname:@"myvideosvc" bundle:nil];     uinavigationcontroller *myvideonvc = [[uinavigationcontroller alloc] initwithrootviewcontroller:myvideovc];     myvideonvc.navigationbar.tintcolor = [uicolor whitecolor];     [myvideovc release];       myfriendsvc *myfriendvc = [[myfriendsvc alloc] initwithnibname:@"myfriendsvc" bundle:nil];     uinavigationcontroller *myfriendnvc = [[uinavigationcontroller alloc] initwithrootviewcontroller:myfriendvc];     myfriendnvc.navigationbar.tintcolor = [uicolor whitecolor];     [myfriendvc release];       mymessagevc *mymessagevc = [[mymessagevc alloc] initwithnibname:@"mymessagevc" bundle:nil];     uinavigationcontroller *mymessagenvc = [[uinavigationcontroller alloc] initwithrootviewcontroller:mymessagevc];     mymessagenvc.navigationbar.tintcolor = [uicolor whitecolor];     [mymessagevc release];      myprofilevc *myprofilevc = [[myprofilevc alloc] initwithnibname:@"myprofilevc" bundle:nil];     uinavigationcontroller *myprofilenvc = [[uinavigationcontroller alloc] initwithrootviewcontroller:myprofilevc];     myprofilenvc.navigationbar.tintcolor = [uicolor whitecolor];     [myprofilevc release];      tabbarcontroller.viewcontrollers = [nsarray arraywithobjects:myalarmnvc,myvideonvc, myfriendnvc,mymessagenvc,myprofilenvc, nil];     [myalarmnvc release];     [myvideonvc release];     [myprofilenvc release];     [myfriendnvc release];     [mymessagenvc release];     [self.window addsubview:tabbarcontroller.view ];     //tabbarcontroller.navigationcontroller.navigationbarhidden = yes;     [self.tabbarcontroller release];  }  - (void)tabbarcontroller:(uitabbarcontroller *)tabbarcontroller1 didselectviewcontroller:(uiviewcontroller *)viewcontroller{      nsarray *vc= tabbarcontroller1.viewcontrollers;      (int = 0; < [vc count]; i++) {          uinavigationcontroller *nc = [vc objectatindex:i];          if (nc == tabbarcontroller1.selectedviewcontroller) {              continue;         }  [nc poptorootviewcontrolleranimated:no];     }  } 

if got problem tell me view names of tabbar