@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

        // Create an ad.
        adView = new AdView(this);
        adView.setAdSize(AdSize.BANNER);
        adView.setAdUnitId(AD_UNIT_ID);

        // Add the AdView to the view hierarchy. The view will have no size
        // until the ad is loaded.
        RelativeLayout layout = new RelativeLayout(this);
        layout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,    LayoutParams.MATCH_PARENT));

        // Create an ad request. Check logcat output for the hashed device ID to
        // get test ads on a physical device.
        AdRequest adRequest = new AdRequest.Builder()
          .addTestDevice(TestDeviceID)
          .build();

        // Start loading the ad in the background.
        adView.loadAd(adRequest);

        //Request full screen
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);

        //Create a displayMetrics object to get pixel width and height
        metrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(metrics);
        width = metrics.widthPixels;
        height = metrics.heightPixels;

        //Work out values for resizing screen while keeping aspect ratio

        width = (int) Math.min(width, height * 1.702127659574468);
        height = (int) Math.min(height, width / 1.702127659574468);

        //Create and set GL view (OpenGL View)
        myView = new MyGLSurfaceView(MainActivity.this);

        RelativeLayout.LayoutParams adParams =
                new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
                RelativeLayout.LayoutParams.WRAP_CONTENT);
                adParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
                adParams.addRule(RelativeLayout.CENTER_HORIZONTAL);

        //Set the colour if we don't, the ad won't show (bug?)
        adView.setBackgroundColor(Color.BLACK);
        layout.addView(myView);
        layout.addView(adView, adParams);

        //Create a copy of the Bundle
        if (savedInstanceState != null){
            newBundle = new Bundle(savedInstanceState);
        }


        setContentView(layout);

}

AdSize adSize = AdSize.SMART_BANNER;

        DisplayMetrics dm = getResources().getDisplayMetrics();

        double density = dm.density * 160;
        double x = Math.pow(dm.widthPixels / density, 2);
        double y = Math.pow(dm.heightPixels / density, 2);
        double screenInches = Math.sqrt(x + y);

        if (screenInches > 8) { // > 728 X 90
            adSize = AdSize.LEADERBOARD;
        } else if (screenInches > 6) { // > 468 X 60
            adSize = AdSize.MEDIUM_RECTANGLE;
        } else { // > 320 X 50
            adSize = AdSize.BANNER;
        }



// Create an ad.
        adView = new AdView(this);
        adView.setAdSize(adSize);
        adView.setAdUnitId(AD_UNIT_ID);