问Admob广告只有在第一次刷新后才会出现

EN

    @Override
protected void onCreate (Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    RelativeLayout layout = new RelativeLayout(this);

    AndroidApplicationConfiguration config = new AndroidApplicationConfiguration();
    opener = new AndroidGalleryOpener(this);
     requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
    View gameView = initializeForView(new Zaidimas(opener), config);
    AdView adView = new AdView(this);
    adView.setAdUnitId("xxxxx my secret number xxxxxxxx");
    adView.setAdSize(AdSize.BANNER);
    adView.loadAd(new AdRequest.Builder()
    .build());
    layout.addView(gameView);
    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);
        layout.addView(adView, adParams);
        setContentView(layout);
//initialize(new Zaidimas(opener), config);

}