private static void bannerFailCallback(IntPtr bannerHandlePtr, string error)
{
GCHandle bannerHandle = (GCHandle)bannerHandlePtr;
AMRBannerViewDelegate delegateObject = bannerHandle.Target as AMRBannerViewDelegate;
delegateObject.didFailtoReceiveBanner(error);
}
void onAdFailedToLoad(string error)
{
delegateObj.didFailtoReceiveBanner(error);
}