title: Unity - Admob hide banner doesn't work
body: <p>Why doesn't my admob banner hide when I go the next scene called ''Main''?
  I did everything what other people said on other threads..</p>
  
  <p>This is my code:</p>
  
  <pre><code>using GoogleMobileAds.Api;  
  
  public class AdmobAds : MonoBehaviour {
  
  private BannerView bannerView;
  
  
      private void RequestBanner()
      {
          #if UNITY_ANDROID
          string adUnitId = "ca-app-pub-xxxxxxxxxxxxxxxxxx";
          #elif UNITY_IPHONE
          string adUnitId = "INSERT_IOS_BANNER_AD_UNIT_ID_HERE";
          #else
          string adUnitId = "unexpected_platform";
          #endif
  
          // Create a 320x50 banner at the top of the screen.
          BannerView bannerView = new BannerView(adUnitId, AdSize.SmartBanner, AdPosition.Bottom);
          // Create an empty ad request.
          AdRequest request = new AdRequest.Builder().Build();
          // Load the banner with the request.
          bannerView.LoadAd(request);
      }
  
      public void HideAd()
      {
          bannerView.Destroy ();
          bannerView.Hide ();
      }
  
      void Start()
      {
          Scene currentScene = SceneManager.GetActiveScene ();
          string sceneName = currentScene.name;
  
          if (sceneName == "Menu") 
          {
              RequestBanner ();
          }
  
          else if (sceneName == "Main") 
          {
              bannerView.Destroy ();
              bannerView.Hide ();
          }
      }
  }
  </code></pre>
  
  <p>Also the ''public void HideAd'' is attachted to the start button, still it doesn't hide the banner..</p>
  
  <p>What do I do?</p>