A Dart implementation of Leaflet.markercluster for Flutter

by flutter on Friday, June 28, 2019 in Flutter Tutorial, Tutorial

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Flutter Map Marker Cluster

A Dart implementation of Leaflet.markercluster for Flutter apps. This is a plugin for flutter_map package.

Usage

Add flutter_map and flutter_map_marker_cluster to your pubspec:

dependencies:
  flutter_map: any
  flutter_map_marker_cluster: any # or the latest version on Pub

Add it in you FlutterMap and configure it using MarkerClusterGroupLayerOptions.

  Widget build(BuildContext context) {
    return FlutterMap(
      options: new MapOptions(
        plugins: [
          MarkerClusterPlugin(),
        ],
      ),
      layers: [
        TileLayerOptions(
          urlTemplate: 'https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
          subdomains: ['a', 'b', 'c'],
        ),
        MarkerClusterLayerOptions(
          maxClusterRadius: 120,
          height: 40,
          width: 40,
          fitBoundsOptions: FitBoundsOptions(
            padding: EdgeInsets.all(50),
          ),
          markers: markers,
          polygonOptions: PolygonOptions(
              borderColor: Colors.blueAccent,
              color: Colors.black12,
              borderStrokeWidth: 3),
          builder: (context, markers) {
            return FloatingActionButton(
              child: Text(markers.length.toString()),
              onPressed: null,
            );
          },
        ),
      ],
    );
  }