onmyway133

// Adding A Child View Controller
[self addChildViewController:viewController];
viewController.view.frame = self.view.bounds;
[self.view addSubview:viewController.view];
[viewController didMoveToParentViewController:self];

// Removing A Child From A Parent
[viewController willMoveToParentViewController:nil];
[viewController.view removeFromSuperview];
[viewController removeFromParentViewController];