problem with code admob game

[mohaarar]

hello

i have problem with admob game

this AD_INTERSTITIAL_UNIT_ID Not show he show message field

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 com.mohaapp.layers.CCScene;
import com.mohaapp.nodes.CCDirector;
import com.mohaapp.opengl.CCGLSurfaceView;

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-1141613635835332/7968365003";
    private static final String AD_INTERSTITIAL_UNIT_ID = "ca-app-pub-1141613635835332/7968365003";
   

    /** 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);

i now this 2 admob The same advertising but this to show you what a problem

and the AD_UNIT_ID not show after add admob code AD_INTERSTITIAL_UNIT_ID = "ca-app-pub-1141613635835332/7968365003";