Fill Layer

The FillLayer is either used by the map style or can be added to the map programmatically to symbolize data on the map.

Basic Usage

late final MapController _controller;

@override
Widget build(BuildContext context) {
  return MapLibreMap(
      options: MapOptions(center: Position(9.17, 47.68)),
      onMapCreated: (controller) => _controller = controller,
      onStyleLoaded: () async {
        final geojsonPolygon =
        await rootBundle.loadString('assets/geojson/lake-constance.json');
        await _controller.addSource(
          GeoJsonSource(id: 'LakeConstance', data: geojsonPolygon),
        );
        await _controller.addLayer(
          const FillLayer(
            id: 'geojson-fill',
            sourceId: 'LakeConstance',
            paint: {'fill-color': '#429ef5'},
          ),
        );
      }
  );
}

Check out the example app for to learn more.

Style & Layout

Use the paint property to change the style and the layout property to change the behavior on the map.

Read the Paint & Layout chapter to learn more on this topic.