title: AdMob ads not showing, getting Ad is not visible. Not refreshing ad
body: <p>I am trying to initialize AdMob ad programatically, without xml code, but I am not getting shown anything, and I am receiving these warnings in LogCat
  <img src="https://i.stack.imgur.com/pMlJI.png" alt="enter image description here"></p>
  
  <p>And here is how I am initializing the ad in OnCreate:</p>
  
  <pre><code>AdRequest adRequest = new AdRequest.Builder().addTestDevice(AdRequest.DEVICE_ID_EMULATOR).build();
      AdView adView = new AdView(this);
      adView.setAdSize(AdSize.BANNER);
      adView.setAdUnitId("some id here");
      adView.loadAd(adRequest);
  </code></pre>
  
  <p>What is wrong?</p>