Mi problema es que los anuncios no se muestran en absoluto en mi aplicación, modo de prueba o no. Voy a mantener esta pregunta específica para el modo de prueba, y una vez que funcione, me preocuparé por los anuncios en vivo.

Información de desarrollo

Estoy usando Eclipse para el desarrollo.

He configurado anuncios usando Google Play Services y Admob en mi aplicación de Android, como se describe en la documentación en línea proporcionada por Google.

He agregado mi ID de dispositivo usando addTestDevice ("xxxxxxxxxxxxxxxx"), y he verificado la ID del dispositivo hash varias veces para asegurarme de que sea correcta.

El problema (ver abajo para información de registro)

Cuando ejecuto la aplicación en mi dispositivo, no se muestran anuncios. Esto sucede incluso cuando agregué mi dispositivo como dispositivo de prueba.

He buscado por todas partes y he encontrado muchos problemas similares, pero aún no he encontrado una respuesta a este problema específico.

Salida de LogCat

10-28 13:56:41.659: I/Ads(1704): Starting ad request.
10-28 13:56:42.187: I/Ads(1704): No fill from ad server.
10-28 13:56:42.187: W/Ads(1704): Failed to load ad: 3
10-28 13:56:42.199: W/Ads(1704): No GMSG handler found for GMSG: gmsg://mobileads.google.com/jsLoaded?google.afma.Notify_dt=1414504602197

Mi actividad

   package bb.hoppingbird;

    import org.cocos2d.layers.CCScene;
    import org.cocos2d.nodes.CCDirector;
    import org.cocos2d.opengl.CCGLSurfaceView;

    import com.google.android.gms.ads.AdListener;
    import com.google.android.gms.ads.AdRequest;
    import com.google.android.gms.ads.AdSize;
    import com.google.android.gms.ads.AdView;
    import com.google.android.gms.ads.InterstitialAd;

    import android.app.Activity;
    import android.content.SharedPreferences;
    import android.media.MediaPlayer;
    import android.os.Bundle;
    import android.support.v4.view.ViewPager.LayoutParams;
    import android.util.DisplayMetrics;
    import android.view.KeyEvent;
    import android.widget.RelativeLayout;
    import android.widget.Toast;

    public class MainActivity extends Activity {

    private CCGLSurfaceView mGLSurfaceView;

    //<!-- Admob Ads Using Google Play Services SDK -->
    private static final String AD_UNIT_ID = "ca-app-pub-xxxxxxxxxxxxxxxxxxxx";
    private static final String AD_INTERSTITIAL_UNIT_ID = "ca-app-pub-xxxxxxxxxxxxxxxxxxxx";


    /** The Admob ad. */
    private InterstitialAd interstitialAd = null;
    public AdView adView = null;

    public static MainActivity app;

    public void onCreate(Bundle savedInstanceState)
    {
        app = this;

        super.onCreate(savedInstanceState);

        // set view
        mGLSurfaceView = new CCGLSurfaceView(this);


        //Ads ----------------
        // Create the adView
        RelativeLayout layout = new RelativeLayout(this);
        layout.setLayoutParams(new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));

        //<!-- Ads Using Google Play Services SDK -->
        adView = new AdView(this);
        adView.setAdSize(AdSize.SMART_BANNER);
        adView.setAdUnitId(AD_UNIT_ID);

        // Add the adView to it
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
                LayoutParams.WRAP_CONTENT,
                LayoutParams.WRAP_CONTENT);
        params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
        params.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);

        adView.setLayoutParams(params);

        layout.addView(mGLSurfaceView);
        layout.addView(adView);

        setContentView(layout);
        //New AdRequest 
        AdRequest adRequest = new AdRequest.Builder()
        .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
        .addTestDevice("0D47C6944503F0284666D16BB79BF684")
        .build();

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


        //-----------------------------------------------------Interstitial Add
        // Create an Interstitial ad.
        interstitialAd = new InterstitialAd(this);
        interstitialAd.setAdUnitId(AD_INTERSTITIAL_UNIT_ID);
        interstitialAd.setAdListener(new AdListener() {
              @Override
              public void onAdLoaded() {
                interstitialAd.show();
              }

              @Override
              public void onAdFailedToLoad(int errorCode) {
                  Toast.makeText(getApplicationContext(), "Interstitial Ads loading failed", Toast.LENGTH_SHORT).show();
              }
        });
         // Load the interstitial ad.
        //showInterstitialAds();

        //----------------------
        // set director
        CCDirector director = CCDirector.sharedDirector();
        director.attachInView(mGLSurfaceView);
        director.setAnimationInterval(1/60);

        // get display info
        DisplayMetrics displayMetrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
        G.display_w = displayMetrics.widthPixels;
        G.display_h = displayMetrics.heightPixels;
        G.scale = Math.max(G.display_w/1280.0f, G.display_h/800.0f);
        G.width = G.display_w / G.scale;
        G.height = G.display_h / G.scale;

        // get data
        SharedPreferences sp = CCDirector.sharedDirector().getActivity().getSharedPreferences("GameInfo", 0);
        G.music = sp.getBoolean("music", true);
        G.sound = sp.getBoolean("sound", true);

        // create sound
        G.soundMenu = MediaPlayer.create(this, R.raw.menu);
        G.soundMenu.setLooping(true);
        G.soundGame = MediaPlayer.create(this, R.raw.game);
        G.soundGame.setLooping(true);
        G.soundCollide = MediaPlayer.create(this, R.raw.collide);
        G.soundJump = MediaPlayer.create(this, R.raw.jump);
        G.soundLongJump = MediaPlayer.create(this, R.raw.long_jump);
        G.soundSpeedDown = MediaPlayer.create(this, R.raw.speed_down);
        G.soundSpeedUp = MediaPlayer.create(this, R.raw.speed_up);
        G.soundDirection = MediaPlayer.create(this, R.raw.direction_sign);
        G.soundClick = MediaPlayer.create(this, R.raw.menu_click);
        G.soundCollect = MediaPlayer.create(this, R.raw.collect);
        G.bgSound = G.soundMenu;

        // show menu
        CCScene scene = CCScene.node();
        scene.addChild(new MenuLayer(true));
        director.runWithScene(scene);
    }  

    @Override
    public void onPause()
    {
        if (adView != null) {
              adView.pause();
            }

        super.onPause();
        G.bgSound.pause();
        CCDirector.sharedDirector().onPause();
    }

    @Override
    public void onResume()
    {
        super.onResume();

        if (adView != null) {
            adView.resume();
          }

        if( G.music ) G.bgSound.start();

        CCDirector.sharedDirector().onResume();
    }

    @Override
    public void onDestroy()
    {
        // Destroy the AdView.
        if (adView != null) {
          adView.destroy();
        }

        super.onDestroy();
        G.bgSound.pause();
        CCDirector.sharedDirector().end();
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event)
    {
        if( keyCode == KeyEvent.KEYCODE_BACK )
        {
            CCDirector.sharedDirector().onKeyDown(event);
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }

    public void showInterstitialAds()
    {
        runOnUiThread(new Runnable() {
            public void run() {
                 AdRequest interstitialAdRequest = new AdRequest.Builder().build();
                 interstitialAd.loadAd(interstitialAdRequest);
            }
        });
    }
}