func navigateToView() { let storyboard = UIStoryboard.init(name: "Main", bundle: nil) for child in (self.window?.rootViewController?.childViewControllers)! { if child.restorationIdentifier == "Three" { let tabbarcontroller = self.window?.rootViewController as! MainTabViewController // Select TabBarItem with Index = 2 tabbarcontroller.selectedIndex = 2 let listTableViewController = (child.childViewControllers[0]) as! ListTableViewController let booksTableViewController = (storyboard.instantiateViewController(withIdentifier: "Four")) as! BooksTableViewController listTableViewController.navigationController?.pushViewController(booksTableViewController, animated: true) } } }