TabBarController inside NavigationController
NSMutableArray *viewControllers = [[NSMutableArray alloc] init];

// create someView
[viewControllers addObject:someView];
// create someView2
[viewControllers addObject:someView2];


UITabBarController *tabController = [[UITabBarController alloc] init];
[tabController setViewControllers:viewControllers];

[[self navigationController] pushViewController:tabController animated:YES];

[self.navigationController popViewControllerAnimated: NO];