IOSLauncher - Admob Banner iOS libGDX Project

package com.bytejourney.ios.banner;

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

import org.robovm.apple.coregraphics.CGRect;
import org.robovm.apple.coregraphics.CGSize;
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.apple.uikit.UIScreen;
import org.robovm.pods.google.mobileads.GADAdSize;
import org.robovm.pods.google.mobileads.GADBannerView;
import org.robovm.pods.google.mobileads.GADBannerViewDelegateAdapter;
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;

public class IOSLauncher extends IOSApplication.Delegate  implements AdsController  {
    private static GADBannerView bannerView;
    private IOSApplication iosApplication;
    private float bannerHeight;
    private double screenWidth;
    private double screenHeight;
    private double adWidth;
    private double adHeight;
    private float bannerWidth;
    @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 loadBanner() {
        if (bannerView == null) {
            CGRect cgRect = iosApplication.getUIViewController().getView().getFrame();
            cgRect.setY(cgRect.getHeight());

            bannerView = new GADBannerView(GADAdSize.Banner());
            GADAdSize adSize = getAdSize();
            bannerView.setAdSize(adSize);
            bannerView.setAdUnitID("ca-app-pub-3940256099942544/6300978111");
            bannerView.setRootViewController(iosApplication.getUIViewController());
            iosApplication.getUIViewController().getView().addSubview(bannerView);
        }

        final GADRequest request = GADRequest.request();

        bannerView.setDelegate(new GADBannerViewDelegateAdapter() {
            @Override
            public void didReceiveAd(GADBannerView view) {
                super.didReceiveAd(view);
                System.out.println("didReceiveAd.");
            }

            @Override
            public void didFailToReceiveAd(GADBannerView bannerView, NSError error) {
                super.didFailToReceiveAd(bannerView, error);
                System.out.println("didFailToReceiveAd.");
            }
        });

        bannerView.loadRequest(request);
        bannerView.setFrame(new CGRect((screenWidth / 2) - bannerWidth / 2,
                0 + iosApplication.getUIViewController().getView().getSafeAreaInsets().getTop(), bannerWidth, bannerHeight)); // top banner ad
//                screenHeight - bannerHeight, bannerWidth, bannerHeight)); // bottom banner ad
    }
    public GADAdSize getAdSize(){
        // Determine the screen width (less decorations) to use for the ad width.
        final CGSize screenSize = UIScreen.getMainScreen().getBounds().getSize();
        screenWidth = screenSize.getWidth();
        screenHeight = screenSize.getHeight();

        final CGSize adSize = bannerView.getBounds().getSize();
        adWidth = adSize.getWidth();
        adHeight = adSize.getHeight();

        bannerWidth = (float) screenWidth;
        bannerHeight = (float) (bannerWidth / adWidth * adHeight);
        return GADAdSize.getCurrentOrientationAnchoredAdaptiveBannerAdSize(bannerWidth);
    }
}