private static void interstitialShowCallback(IntPtr interstitialHandlePtr)
{
GCHandle interstitialHandle = (GCHandle)interstitialHandlePtr;
AMRInterstitialViewDelegate delegateObject = interstitialHandle.Target as AMRInterstitialViewDelegate;
delegateObject.didShowInterstitial();
}
void onAdShowed(string message)
{
delegateObj.didShowInterstitial();
}