YBPayHelperViewController *chooseVC = [[UIStoryboard storyboardWithName:@"AddUI" bundle:nil] instantiateViewControllerWithIdentifier:@"YBPayHelperViewController"];    AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];    ZYCOMBaseNavigationController *nav = (ZYCOMBaseNavigationController *) appDelegate.window.rootViewController;        MainTabBarController *tabbar = (MainTabBarController *)nav.viewControllers[0];    [self.navigationController popToRootViewControllerAnimated:NO];    tabbar.selectedIndex = 4;        ZYCOMBaseNavigationController *meNav = (ZYCOMBaseNavigationController *)tabbar.childViewControllers[4];    [meNav pushViewController:chooseVC animated:YES];