title: Failed to load ad: 0 - admob is not Show in app
body: <p>I'm using Webview in an Android app. When I run the app, the admob is not show in the first run. If I run the app again, the admob shows. Why is this happening?
  What should I do in code?</p>
  
  <p>I do see an exception in my logs (below the code):</p>
  
  <pre><code>    public class WebViewClientDemoActivity extends Activity {
  
      WebView web;
      ProgressDialog  pd;
      Button button1;
      private AdView adView;
      private InterstitialAd interstitial;
  
      @Override
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.main);
  
         interstitial = new InterstitialAd(WebViewClientDemoActivity.this);
          interstitial.setAdUnitId("ca-app-pub-9902624673333052/2524062321");
          AdRequest adRequest2 = new AdRequest.Builder()
         .build();
  
  
          adView = (AdView)findViewById(R.id.adView);
          AdRequest adRequest = new AdRequest.Builder()
          .build();
  
          adView.loadAd(adRequest);
         interstitial.loadAd(adRequest2);
  
         interstitial.setAdListener(new AdListener() {
              public void onAdLoaded() {
                  displayInterstitial();
              }
          });
  
          button1 = (Button) findViewById(R.id.button1);
          button1.setOnClickListener(new OnClickListener() {
  
              @Override
              public void onClick(View v) {
                  web.loadUrl("http://hostwr.com/app1/ibr/");
                  interstitial.show();
                  }
          });
  
          if(isNetworkStatusAvialable (getApplicationContext())) {
              web = (WebView) findViewById(R.id.webview01);
              web.setWebViewClient(new myWebClient());
              web.getSettings().setJavaScriptEnabled(true);
              web.loadUrl("http://hostwr.com/app1/ibr/");
          } else {
              Toast.makeText(getApplicationContext(), "لا يوجد اتصال بالانترنت !!!",Toast.LENGTH_LONG).show();
  
          }
  
      }
  
  
  
      public void displayInterstitial() {
              if (interstitial.isLoaded()) {
                  interstitial.show();
              }
          }
  
      public class myWebClient extends WebViewClient
      {
          @Override
          public void onPageStarted(WebView view, String url, Bitmap favicon) {
              super.onPageStarted(view, url, favicon);
              if (pd == null) {
                  // in standard case YourActivity.this
                  pd = new ProgressDialog(WebViewClientDemoActivity.this);
                  pd.setMessage("انتظر لحظة...");
                  pd.setCanceledOnTouchOutside(false);
                  pd.show();
              }
          }
  
          @Override
          public boolean shouldOverrideUrlLoading(WebView view, String url) {         
              view.loadUrl(url);
              return false;
              }
  
          @Override
          public void onPageFinished(WebView view, String url) {
              super.onPageFinished(view, url);
               try{
                   if (pd.isShowing()) {
                       pd.dismiss();
                      pd = null;
                   }
                   }catch(Exception exception){
                       exception.printStackTrace();
                   }
  
               }
  
  
      }
  
      @Override
      public boolean onKeyDown(int keyCode, KeyEvent event) {
          if(event.getAction() == KeyEvent.ACTION_DOWN){
              switch(keyCode)
              {
              case KeyEvent.KEYCODE_BACK:
                  if(web.canGoBack()){
                      web.goBack();
                  }else{
                      finish();
                  }
                  return true;
              }
  
          }
          return super.onKeyDown(keyCode, event);
      }
  
      public void onPause() {
            adView.pause();
            super.onPause();
          }
  
          @Override
          public void onResume() {
            super.onResume();
            adView.resume();
          }
  
          @Override
          public void onDestroy() {
            adView.destroy();
            super.onDestroy();
  
          }
  
          public static boolean isNetworkStatusAvialable (Context context) {
              ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
              if (connectivityManager != null) 
              {
                  NetworkInfo netInfos = connectivityManager.getActiveNetworkInfo();
                  if(netInfos != null)
                  if(netInfos.isConnected()) 
                      return true;
              }
              return false;
          }
  
  }
  </code></pre>
  
  <p>Log Cat</p>
  
  <pre><code>10-27 19:37:01.806: V/WebViewChromiumFactoryProvider(1188): Binding Chromium to main looper Looper (main, tid 1) {5284e270}
  10-27 19:37:01.806: I/LibraryLoader(1188): Expected native library version number "",actual native library version number ""
  10-27 19:37:01.806: I/chromium(1188): [INFO:library_loader_hooks.cc(116)] Chromium logging enabled: level = 0, default verbosity = 0
  10-27 19:37:01.870: I/BrowserStartupController(1188): Initializing chromium process, renderers=0
  10-27 19:37:02.142: E/AudioManagerAndroid(1188): BLUETOOTH permission is missing!
  10-27 19:37:02.566: D/libEGL(1188): loaded /system/lib/egl/libEGL_genymotion.so
  10-27 19:37:02.566: D/(1188): HostConnection::get() New Host Connection established 0xb79670d0, tid 1188
  10-27 19:37:02.574: D/libEGL(1188): loaded /system/lib/egl/libGLESv1_CM_genymotion.so
  10-27 19:37:02.574: D/libEGL(1188): loaded /system/lib/egl/libGLESv2_genymotion.so
  10-27 19:37:02.666: W/chromium(1188): [WARNING:mailbox_synchronizer.cc(36)] MailboxSync not supported due to missing EGL image/fence support
  10-27 19:37:02.778: D/dalvikvm(1188): GC_FOR_ALLOC freed 91K, 4% free 3805K/3960K, paused 2ms, total 2ms
  10-27 19:37:02.782: I/dalvikvm-heap(1188): Grow heap (frag case) to 6.192MB for 2536932-byte allocation
  10-27 19:37:02.786: D/dalvikvm(1188): GC_FOR_ALLOC freed &lt;1K, 3% free 6282K/6440K, paused 2ms, total 2ms
  10-27 19:37:03.078: W/chromium(1188): [WARNING:proxy_service.cc(890)] PAC support disabled because there is no system implementation
  10-27 19:37:03.082: W/GooglePlayServicesUtil(1188): Google Play services is missing.
  10-27 19:37:03.130: D/dalvikvm(1188): DexOpt: --- BEGIN 'ads-456905124.jar' (bootstrap=0) ---
  10-27 19:37:03.138: W/GooglePlayServicesUtil(1188): Google Play services is missing.
  10-27 19:37:03.142: I/Ads(1188): Starting ad request.
  10-27 19:37:03.142: I/Ads(1188): Use AdRequest.Builder.addTestDevice("3A1ADC6C8879D79A9A6D537320830C10") to get test ads on this device.
  10-27 19:37:03.146: W/GooglePlayServicesUtil(1188): Google Play services is missing.
  10-27 19:37:03.146: I/Ads(1188): Starting ad request.
  10-27 19:37:03.146: I/Ads(1188): Use AdRequest.Builder.addTestDevice("3A1ADC6C8879D79A9A6D537320830C10") to get test ads on this device.
  10-27 19:37:03.250: D/dalvikvm(1188): DexOpt: --- END 'ads-456905124.jar' (success) ---
  10-27 19:37:03.250: D/dalvikvm(1188): DEX prep '/data/data/com.hostwr.ibrahemfeqy/cache/ads-456905124.jar': unzip in 0ms, rewrite 117ms
  10-27 19:37:03.498: W/EGL_genymotion(1188): eglSurfaceAttrib not implemented
  10-27 19:37:03.502: E/OpenGLRenderer(1188): Getting MAX_TEXTURE_SIZE from GradienCache
  10-27 19:37:03.502: E/OpenGLRenderer(1188): MAX_TEXTURE_SIZE: 8192
  10-27 19:37:03.506: E/OpenGLRenderer(1188): Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
  10-27 19:37:03.510: E/OpenGLRenderer(1188): MAX_TEXTURE_SIZE: 8192
  10-27 19:37:03.510: D/OpenGLRenderer(1188): Enabling debug mode 0
  10-27 19:37:03.514: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:03.702: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:04.582: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:04.622: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:04.638: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:04.658: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:04.678: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:04.710: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:04.734: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:04.758: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:04.782: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:04.802: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:04.822: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:04.842: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:04.862: W/AwContents(1188): nativeOnDraw failed; clearing to background color.
  10-27 19:37:06.706: D/dalvikvm(1188): GC_FOR_ALLOC freed 467K, 8% free 6639K/7168K, paused 4ms, total 4ms
  10-27 19:37:06.706: I/dalvikvm-heap(1188): Grow heap (frag case) to 7.141MB for 629772-byte allocation
  10-27 19:37:06.718: D/dalvikvm(1188): GC_FOR_ALLOC freed &lt;1K, 7% free 7253K/7784K, paused 14ms, total 14ms
  10-27 19:37:06.850: W/EGL_genymotion(1188): eglSurfaceAttrib not implemented
  10-27 19:37:07.330: I/chromium(1188): [INFO:async_pixel_transfer_manager_android.cc(60)] Async pixel transfers not supported
  10-27 19:37:07.406: I/chromium(1188): [INFO:async_pixel_transfer_manager_android.cc(60)] Async pixel transfers not supported
  10-27 19:37:07.670: E/eglCodecCommon(1188): **** ERROR unknown type 0x238e0a (glSizeof,73)
  10-27 19:37:07.678: I/Choreographer(1188): Skipped 30 frames!  The application may be doing too much work on its main thread.
  10-27 19:37:07.902: E/eglCodecCommon(1188): **** ERROR unknown type 0x238e0a (glSizeof,73)
  10-27 19:37:07.986: W/EGL_genymotion(1188): eglSurfaceAttrib not implemented
  10-27 19:37:08.102: E/eglCodecCommon(1188): **** ERROR unknown type 0x238e0a (glSizeof,73)
  10-27 19:37:08.358: E/eglCodecCommon(1188): **** ERROR unknown type 0x238e0a (glSizeof,73)
  10-27 19:37:12.870: W/System.err(1188): java.lang.NullPointerException
  10-27 19:37:12.870: W/System.err(1188):     at com.hostwr.ibrahemfeqy.WebViewClientDemoActivity$myWebClient.onPageFinished(WebViewClientDemoActivity.java:118)
  10-27 19:37:12.870: W/System.err(1188):     at com.android.webview.chromium.WebViewContentsClientAdapter.onPageFinished(WebViewContentsClientAdapter.java:455)
  10-27 19:37:12.870: W/System.err(1188):     at com.android.org.chromium.android_webview.AwContentsClient$AwWebContentsObserver.didFinishLoad(AwContentsClient.java:62)
  10-27 19:37:12.870: W/System.err(1188):     at com.android.org.chromium.base.SystemMessageHandler.nativeDoRunLoopOnce(Native Method)
  10-27 19:37:12.870: W/System.err(1188):     at com.android.org.chromium.base.SystemMessageHandler.handleMessage(SystemMessageHandler.java:24)
  10-27 19:37:12.870: W/System.err(1188):     at android.os.Handler.dispatchMessage(Handler.java:102)
  10-27 19:37:12.870: W/System.err(1188):     at android.os.Looper.loop(Looper.java:136)
  10-27 19:37:12.870: W/System.err(1188):     at android.app.ActivityThread.main(ActivityThread.java:5001)
  10-27 19:37:12.870: W/System.err(1188):     at java.lang.reflect.Method.invokeNative(Native Method)
  10-27 19:37:12.870: W/System.err(1188):     at java.lang.reflect.Method.invoke(Method.java:515)
  10-27 19:37:12.870: W/System.err(1188):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
  10-27 19:37:12.870: W/System.err(1188):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
  10-27 19:37:12.870: W/System.err(1188):     at dalvik.system.NativeStart.main(Native Method)
  10-27 19:37:13.318: E/eglCodecCommon(1188): **** ERROR unknown type 0x238e0a (glSizeof,73)
  10-27 19:37:13.330: W/Ads(1188): There was a problem getting an ad response. ErrorCode: 0
  10-27 19:37:13.342: W/Ads(1188): Failed to load ad: 0
  10-27 19:37:13.342: W/Ads(1188): There was a problem getting an ad response. ErrorCode: 0
  10-27 19:37:13.362: W/Ads(1188): Failed to load ad: 0
  </code></pre>