public void SetAdmobInterstitial()
        {
            var fullAd      = AdWrapper.ConstructFullPageAdd(this, Resources.GetString(Resource.String.admob_interstitial));
            var intListener = new AdEventListener();

            intListener.AdLoaded += () => { if (fullAd.IsLoaded)
                                            {
                                                fullAd.Show();
                                            }
            };
            fullAd.AdListener = intListener;
            fullAd.CustomBuild();
        }
		public void SetAdmobInterstitial () {
			var fullAd = AdWrapper.ConstructFullPageAdd(this, Resources.GetString(Resource.String.admob_interstitial));
			var intListener = new AdEventListener ();
			intListener.AdLoaded += () => { if (fullAd.IsLoaded)fullAd.Show (); };
			fullAd.AdListener = intListener;
			fullAd.CustomBuild ();
		}