AppDelegate.swift

import UIKit
import Flutter

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
    override func application(
        _ application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
    ) -> Bool {
        GeneratedPluginRegistrant.register(with: self)
        
        let controller : FlutterViewController = window?.rootViewController as! FlutterViewController
        let methodChannel = FlutterMethodChannel(name: "flutter.native/myid", binaryMessenger: controller.binaryMessenger)
        
        let navigationController = UINavigationController(rootViewController: controller)
        navigationController.setNavigationBarHidden(true, animated: false)
        self.window!.rootViewController = navigationController
        self.window!.makeKeyAndVisible()
        
        methodChannel.setMethodCallHandler({
            (call: FlutterMethodCall, result: @escaping FlutterResult) -> Void in
            if (call.method == "runSDK") {
                let vc = MyIdController(
                    onResult: { data in
                        result(data)
                        navigationController.dismiss(animated: true)
                    },
                    onCancel: {
                        navigationController.dismiss(animated: true)
                    }
                )
                vc.modalPresentationStyle = .pageSheet
                navigationController.present(vc, animated: true)
            }
        })
        
        
        return super.application(application, didFinishLaunchingWithOptions: launchOptions)
    }
}