diff --git a/kplayer/SceneDelegate.swift b/kplayer/SceneDelegate.swift
new file mode 100644
index 0000000..b138aa6
--- /dev/null
+++ b/kplayer/SceneDelegate.swift
@@ -0,0 +1,48 @@
+//
+// Created by Marco Schmickler.
+// Copyright (c) 2023 Marco Schmickler. All rights reserved.
+//
+
+import UIKit
+
+class SceneDelegate: UIResponder, UIWindowSceneDelegate, UISplitViewControllerDelegate {
+
+    var window: UIWindow?
+
+    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
+        guard let _ = scene as? UIWindowScene else { return }
+        setupSplitViewController()
+    }
+
+    func sceneDidBecomeActive(_ scene: UIScene) {
+        NetworkManager.sharedInstance.alive()
+    }
+
+    func sceneDidEnterBackground(_ scene: UIScene) {
+        (UIApplication.shared.delegate as? AppDelegate)?.saveContext()
+    }
+
+    private func setupSplitViewController() {
+        guard let split = window?.rootViewController as? UISplitViewController else { return }
+
+        let detailNav = split.viewControllers[split.viewControllers.count - 1] as! UINavigationController
+        detailNav.topViewController!.navigationItem.leftBarButtonItem = split.displayModeButtonItem
+        split.delegate = self
+
+        let masterNav = split.viewControllers[0] as! UINavigationController
+        let controller = masterNav.topViewController as! MasterViewController
+        controller.delegate = NetworkDelegate()
+        controller.model.items = LocalManager.sharedInstance.model!.items
+    }
+
+    // MARK: - Split view
+
+    func splitViewController(_ splitViewController: UISplitViewController, collapseSecondary secondaryViewController: UIViewController, onto primaryViewController: UIViewController) -> Bool {
+        if let nav = secondaryViewController as? UINavigationController,
+           let detail = nav.topViewController as? DetailViewController,
+           detail.detailItem == nil {
+            return true
+        }
+        return false
+    }
+}