1_DrawPathiOS_DrawPath.cs

//Draw line by connecting polyline points
UIColor pathColor = UIColor.Red;
int intRoutesCount=objRoutes.routes.Count;
//available routes may be more then one
for ( int intCounter = 0 ; intCounter < intRoutesCount ; intCounter++ )
{
	var path = Google.Maps.Path.FromEncodedPath ( objRoutes.routes [intCounter].overview_polyline.points );
	var line = Google.Maps.Polyline.FromPath ( path );
	line.StrokeWidth = 3f;
	line.StrokeColor = UIColor.Red;
	line.Geodesic = true; //more curved path
	line.Map = mapView;
}