Configure AppDelegate

Replace AppDelegate.swift with below code

AppDelegate.swfit can be found in yourFlutterProject/ios/Runner/AppDelegate.swfit

AppDelegate.swfit

import UIKit
import Flutter
import google_mobile_ads

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    GeneratedPluginRegistrant.register(with: self)
      let listTileFactory = SingisticNativeAdFactory()
          FLTGoogleMobileAdsPlugin.registerNativeAdFactory(
               self, factoryId: "adFactoryExample", nativeAdFactory: listTileFactory)
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
}