title: Interstitial Ad not show in splash screen activity
body: <p>I'm trying to integrate Interstitial Ad in splash screen activity
  by using this <a href="https://ads-developers.googleblog.com/2014/04/how-to-create-google-mobile-ads-splash.html?utm_source=feedburner&amp;utm_medium=feed&amp;utm_campaign=Feed:%20GoogleAdsDeveloperBlog%20(Google%20Ads%20Developer%20Blog)" rel="nofollow noreferrer">tutorial</a> 
  .. but the ad not loading.</p>
  
  <p>can anyone tell me where is the problem please?</p>
  
  <p>thanks in advance</p>
  
  <p>here is my code :</p>
  
  <pre><code>public class SplashScreenActivity extends Activity {
  private InterstitialAd mInterstitialAd;
          private Timer waitTimer;
      private boolean interstitialCanceled;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_splash);
  
  
  
  
   mInterstitialAd = new InterstitialAd(this);
      mInterstitialAd.setAdUnitId(getString(R.string.interstitial_full_screen));
      mInterstitialAd.setAdListener(new AdListener()
  
  
  {
      @Override
      public void onAdLoaded() {
          if (!interstitialCanceled) {
              waitTimer.cancel();
              mInterstitialAd.show();
          }
      }
  
      @Override
      public void onAdFailedToLoad(int errorCode) {
          startHomeMain();
      }
  });
  
  waitTimer = new Timer();
  waitTimer.schedule(new TimerTask() {
      @Override
      public void run() {
          interstitialCanceled = true;
          SplashScreenActivity.this.runOnUiThread(new Runnable() {
              @Override
              public void run() {
                  startHomeMain();
              }
          });
      }
  }, 5000);
  } // end of onCreate implementation.
  
  private void startHomeMain() {
      Intent intent = new Intent(this, HomeMain.class);
      startActivity(intent);
      finish();
  }
  
  @Override
  public void onPause() {
      waitTimer.cancel();
      interstitialCanceled = true;
      super.onPause();
  }
  
  @Override
  public void onResume() {
      super.onResume();
      if (mInterstitialAd.isLoaded()) {
          mInterstitialAd.show();
      } else if (interstitialCanceled) {
          startHomeMain();
      }
      }
  }
  </code></pre>
  
  <p>I'm trying to integrate Interstitial Ad in splash screen activity
  by using this <a href="https://ads-developers.googleblog.com/2014/04/how-to-create-google-mobile-ads-splash.html?utm_source=feedburner&amp;utm_medium=feed&amp;utm_campaign=Feed:%20GoogleAdsDeveloperBlog%20(Google%20Ads%20Developer%20Blog)" rel="nofollow noreferrer">tutorial</a> 
  .. but the ad not loading.</p>
  
  <p>can anyone tell me where is the problem please?</p>
  
  <p>thanks in advance</p>