&tag(UIKit/スプリットビュー);
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
let splitViewController = self.window!.rootViewController as! UISplitViewController
splitViewController.delegate = self
splitViewController.preferredDisplayMode = .allVisible
return true
}
func splitViewController(_ splitViewController: UISplitViewController, collapseSecondary secondaryViewController:UIViewController, onto primaryViewController:UIViewController) -> Bool {
return true
}
}