no message

example/ios/Runner/AppDelegate.swift

@@ -7,7 +7,28 @@ import UIKit
     _ application: UIApplication,
     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
   ) -> Bool {
+
+    ///InitCocosIntegrationWithOptions(argc: CommandLine.argc, argv: CommandLine.unsafeArgv, launchOptions)
+
+
+    let flutterEngine = FlutterEngine(name: "io.flutter", project: nil)
+    flutterEngine.run() 
+    let controller = FlutterViewControllerWithTransition(engine: flutterEngine, nibName: nil, bundle: nil)
+    self.window = UIWindow(frame: UIScreen.main.bounds)
+    self.window?.rootViewController = controller
+    self.window?.makeKeyAndVisible()
     GeneratedPluginRegistrant.register(with: self)
+
     return super.application(application, didFinishLaunchingWithOptions: launchOptions)
   }
+
+
 }
+class FlutterViewControllerWithTransition: FlutterViewController {
+    override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
+        super.viewWillTransition(to: size, with: coordinator)
+
+        NotificationCenter.default.post(name: NSNotification.Name("ViewWillTransition"), object: nil, userInfo: ["size": size, "coordinator": coordinator])
+
+    }
+}