import UIKit import XLPagerTabStrip class MainViewController: ButtonBarPagerTabStripViewController { override func viewDidLoad() { super.viewDidLoad() } override func viewControllers(for pagerTabStripController: PagerTabStripViewController) -> [UIViewController] { //管理されるViewControllerを返す処理 let firstVC = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "First") let