code: public static boolean isPointOnMultiPolyline(LatLng point, MultiPolylineOptions multiPolyline, boolean geodesic, double tolerance) {
          boolean near = false;
          for (PolylineOptions polyline : multiPolyline.getPolylineOptions()) {
              near = isPointOnPolyline(point, polyline, geodesic, tolerance);
              if (near) {
                  break;
              }
          }
          return near;
      }
docs: Is the point on the multi polyline
  
  @param point         point
  @param multiPolyline multi polyline
  @param geodesic      geodesic check flag
  @param tolerance     distance tolerance
  @return true if on the multi line