title: Failed to load Native ad: 0 Error
body: <p>I am implementing code for native ads that is given by google. That is working okay with <code>google</code> </p>
  
  <p><b> ad unit id ADMOB_AD_UNIT_ID = "ca-app-pub-3940256099942544/2247696110" </b></p>
  
  <p>But when I replace with my id its not showing ad and execute <code>onAdFailedToLoad</code> method and got  <b> Failed to load native ad: 0 error </b>.</p>
  
  <pre><code>I tried two different ad unit id but it didn't load ad.
  
  so what should I do??please help me 
  </code></pre>
  
  <p>I tried below code</p>
  
  <pre><code>final LayoutInflater li = (LayoutInflater) appContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
              AdLoader.Builder builder = new AdLoader.Builder(appContext, Global.ADMOB_AD_UNIT_ID);
  
              builder.forContentAd(new NativeContentAd.OnContentAdLoadedListener() {
                  @Override
                  public void onContentAdLoaded(NativeContentAd ad) {
                      //viewHolder.rlnativead.setVisibility(View.VISIBLE);
                      NativeContentAdView adView = (NativeContentAdView)li
                              .inflate(R.layout.ad_content, null);
                      populateContentAdView(ad, adView);
                      viewHolder.fl_adplaceholder.removeAllViews();
                      viewHolder.fl_adplaceholder.addView(adView);
                  }
              });
  
              AdLoader adLoader = builder.withAdListener(new AdListener() {
                  @Override
                  public void onAdFailedToLoad(int errorCode) {
  //                  Toast.makeText(appContext, "Failed to load native ad: "
  //                          + errorCode, Toast.LENGTH_SHORT).show();
                      Log.e("Call List adapter","Failed to load native ad: "+errorCode);
                  }
              }).build();
  
              adLoader.loadAd(new AdRequest.Builder().build());
  </code></pre>