nearby_search_listeners.cs

public class NearbySearchResultListener : Java.Lang.Object, ISearchResultListener
{
    private MainActivity context;

    public NearbySearchResultListener(MainActivity context)
    {
        this.context = context;
    }

    public void OnSearchError(SearchStatus status)
    {
        Toast.MakeText(context, "Error Code: " + status.ErrorCode + " Error Message: " + status.ErrorMessage, ToastLength.Long);

    }

    public void OnSearchResult(Java.Lang.Object results)
    {
        NearbySearchResponse nearbySearchResponse = (NearbySearchResponse)results;
        if (nearbySearchResponse != null && nearbySearchResponse.TotalCount > 0)
            context.SetSearchResultOnMap(nearbySearchResponse.Sites);
    }
}