问为什么多边形没有出现

EN

public void AddMapPolygon(double[][] polygon, MapResource mapResource)
{
    PolygonOptions options = new PolygonOptions();
    var points = new LatLng[polygon.Length];

    int index = 0;
    foreach (double[] loc in polygon)
    {
        points[index] = new LatLng(loc[0], loc[1]);
        index++;
    }
    options.Add(points);
    options.InvokeFillColor(Color.Argb(128, 255, 0, 0));
    options.InvokeStrokeColor(Color.Argb(200, 0, 0, 0));
    options.InvokeStrokeWidth(4f);
    NativeMap.AddPolygon(options);
}