IOSLauncher - Admob Interstitial iOS libGDX Project

package com.bytejourney.ios.interstitial;

import static org.robovm.pods.google.mobileads.GADRequest.GADSimulatorID;

import org.robovm.apple.foundation.NSArray;
import org.robovm.apple.foundation.NSAutoreleasePool;
import org.robovm.apple.foundation.NSError;
import org.robovm.apple.uikit.UIApplication;
import org.robovm.objc.block.VoidBlock2;
import org.robovm.pods.google.mobileads.GADFullScreenContentDelegateAdapter;
import org.robovm.pods.google.mobileads.GADFullScreenPresentingAd;
import org.robovm.pods.google.mobileads.GADInterstitialAd;
import org.robovm.pods.google.mobileads.GADMobileAds;
import org.robovm.pods.google.mobileads.GADRequest;

import com.badlogic.gdx.backends.iosrobovm.IOSApplication;
import com.badlogic.gdx.backends.iosrobovm.IOSApplicationConfiguration;
import com.bytejourney.ios.interstitial.MyGdxGame;

public class IOSLauncher extends IOSApplication.Delegate implements AdsController  {
    private IOSApplication iosApplication;

    @Override
    protected IOSApplication createApplication() {
        IOSApplicationConfiguration config = new IOSApplicationConfiguration();

        GADMobileAds.sharedInstance().getRequestConfiguration().setTestDeviceIdentifiers(new NSArray<>(GADSimulatorID()));
        GADMobileAds.sharedInstance().start(status -> {
            System.out.println("GADMobileAds started with status == " + status);
        });

        iosApplication = new IOSApplication(new MyGdxGame(this), config);
        return iosApplication;
    }

    public static void main(String[] argv) {
        NSAutoreleasePool pool = new NSAutoreleasePool();
        UIApplication.main(argv, null, IOSLauncher.class);
        pool.close();
    }

    @Override
    public void loadInterstitial() {
        String unitId = "ca-app-pub-3940256099942544/1033173712"; // test id admob
        GADRequest request = new GADRequest();

        GADInterstitialAd.load(unitId, request, new VoidBlock2<GADInterstitialAd, NSError>() {

            @Override
            public void invoke(GADInterstitialAd ad, NSError error) {

                if (error != null) {
                    System.out.println("Failed to load ad due  " + error);
                } else {
                    ad.setFullScreenContentDelegate(new GADFullScreenContentDelegateAdapter(){
                        @Override
                        public void adDidDismissFullScreenContent(GADFullScreenPresentingAd ad) {
                            super.adDidDismissFullScreenContent(ad);
                            System.out.println("adDidDismissFullScreenContent");
                        }

                        @Override
                        public void didFailToPresentFullScreenContent(GADFullScreenPresentingAd ad, NSError error) {
                            System.out.println("didFailToPresentFullScreenContent  " + error);
                        }
                    });
                    ad.presentFromRootViewController(iosApplication.getUIViewController()); // show the interstitial ad
                }
            }
        });
    }
}