iOS.swift

@objc class AppDelegate: FlutterAppDelegate {
    let hubMethodChannel: HubMethodChannel = .init()
    
    override func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        hubMethodChannel.handle()

        GeneratedPluginRegistrant.register(with: self)
        return super.application(application, didFinishLaunchingWithOptions: launchOptions)
    }
} 

class HubMethodChannel: NSObject {
    func handle() {
        if let controller = UIApplication.shared.delegate?.window??.rootViewController as? FlutterViewController {
            let connectToHubChannel = FlutterMethodChannel(name: "dexbee.club/HubConfig",
                                                           binaryMessenger: controller.binaryMessenger)
            connectToHubChannel.setMethodCallHandler({
                (call: FlutterMethodCall, result: @escaping FlutterResult) -> Void in
                switch call.method {
                case "scanWiFiHubList":
                        HubManager.shared.scanWiFiList { wifiModelList in
                            result(wifiModelList.map({ $0.toDictResult() }))
                        } onError: { error in
                            result(error.toFlutterError())
                        }
                default:
                    result(FlutterMethodNotImplemented)
                }
            })
        }
    }
}