AppDelegate.swift

import UIKit
import Flutter
import Firebase

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate, UIResponder, UIApplicationDelegate {
    
    var window: UIWindow?
    var application: UIApplication?
    var unityController: UnityAppController?
    
    
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    FirebaseApp.configure()
    GeneratedPluginRegistrant.register(with: self)
    if #available(iOS 10.0, *) {
      UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate
    }
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
    
    
     func startUnity()
       {
           isShowUnityWindow = !isShowUnityWindow
           var appDelegate = UIApplication.shared.delegate as? AppDelegate
           
           if isShowUnityWindow {
               appDelegate?.unityWindow()!.frame = CGRect(x: 10, y: 70, width: 350, height: 300)
               appDelegate?.showUnityWindow()
           } else {
               // appDelegate?.hideUnityWindow()
           }
       }
    
    func unityWindow() -> UIWindow? {
        return UnityGetMainWindow()
    }
    
    func showUnityWindow() {
        unityWindow()?.makeKeyAndVisible()
    }
    
    func hideUnityWindow() {
        window!.makeKeyAndVisible()
    }
    
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
        // Override point for customization after application launch.
        sleep(3)
        self.application = application
        unity_init(CommandLine.argc, CommandLine.unsafeArgv)
        
        unityController = UnityAppController()
        unityController!.application(application, didFinishLaunchingWithOptions: launchOptions)
        return true
        
    }
    
    func applicationWillResignActive(_ application: UIApplication) {
        
        unityController!.applicationWillResignActive(application)
    }
    
    func applicationDidEnterBackground(_ application: UIApplication) {
        
        unityController!.applicationDidEnterBackground(application)
    }
    
    func applicationWillEnterForeground(_ application: UIApplication) {
        
        unityController!.applicationWillEnterForeground(application)
    }
    
    func applicationDidBecomeActive(_ application: UIApplication) {
        
        unityController!.applicationDidBecomeActive(application)
    }
    
    func applicationWillTerminate(_ application: UIApplication) {
        
        unityController!.applicationWillTerminate(application)
    }
}