Flutter 插件自 V 3.7.0 开始支持点聚合功能，可通过缩小地图层级，将定义范围内的多个标注点，聚合显示成一个标注点，解决加载大量点要素到地图上产生覆盖现象的问题，并提高性能。

1.在地图创建完成后，设置需要聚合的cluster经纬度及聚合距离。

/// 随机获取100个经纬度点
  List<BMFClusterInfo> clusterInfoList = [];
  BMFCoordinate coordinate = BMFCoordinate(39.915, 116.404);
  for (int i = 0; i < 100; i++) {
      Random random = Random();
      double lat = coordinate.latitude + (random.nextInt(100) * 0.001);
      double lon = coordinate.longitude + (random.nextInt(100) * 0.001);
    
      String imagePath = 'resoures/icon_mark.png';
      Uint8List imageBytes = await imageToUint8List(imagePath);
    
      BMFCoordinate coord = BMFCoordinate(lat, lon);
      clusterInfoList.add(
          new BMFClusterInfo.iconData(coordinate: coord, iconData: imageBytes));
  }
  /// 设置聚合点最大距离
  bool res1 = await myMapController
        .setClusterMaxDistanceInDP(Platform.isIOS ? 200 : 100);
    print('最大距离设置结果：$res1');
    
    /// 设置聚合点的经纬度
    bool res = await myMapController.setClusterCoordinates(clusterInfoList);
    print('点聚合设置结果：$res');

    /// 如果需要首次展示地图时就展示聚合点，就需要调用onRefreshClusters
    if (Platform.isIOS) {
        /// 获取地图状态
        BMFMapStatus? status = await myMapController.getMapStatus();
        /// 根据当前的level刷新聚合点
        onRefreshClusters(status!);
    }

2.添加刷新聚合点的方法

注：widgetToImage自定义cluster样式可以参考demo实现

/// 刷新点聚合
void onRefreshClusters(BMFMapStatus status) async {
     /// 根据当前的level获取聚合点列表
     clusters =
         await myMapController.getClusterOnZoomLevel(status.fLevel!.toInt());
     List<BMFClusterInfo> clusterInfos = [];
     for (BMFClusterInfo? item in clusters) {
        if (item == null) {
          continue;
        }
        int size = item.size!;
        /// 自定义聚合点样式
        if (size > 1) {
          CircularTextWidget text = CircularTextWidget(
            text: '$size',
            radius: 60.0,
            backgroundColor: Colors.blue,
            textColor: Colors.white,
        );

        // 将Widget转换为图像
        Uint8List? imageBytes = await widgetToImage(text);
        clusterInfos.add(new BMFClusterInfo.iconData(
          coordinate: item.coordinate, iconData: imageBytes, size: size));
    } else {
        clusterInfos.add(new BMFClusterInfo.icon(
            coordinate: item.coordinate,
            icon: 'resoures/icon_end.png',
            size: size));
    }
  }
  /// 刷新聚合点
  bool res = await myMapController.refreshClusters(clusterInfos);
  print('refreshClusters--
 res = $res');
}

3.在合适的时机根据当前的地图级别去刷新cluster

/// 地图状态改变回调
  myMapController.setMapRegionDidChangeCallback(
        callback: (BMFMapStatus status) async {
     print('mapRegionDidChange--
');
     if (Platform.isIOS) {
          /// 根据当前的level刷新聚合点
          onRefreshClusters(status);
        }
});

1.在地图创建完成后，设置需要聚合的cluster经纬度及聚合距离。

/// 随机获取100个经纬度点
  List<BMFClusterInfo> clusterInfoList = [];
  BMFCoordinate coordinate = BMFCoordinate(39.915, 116.404);
  for (int i = 0; i < 100; i++) {
      Random random = Random();
      double lat = coordinate.latitude + (random.nextInt(100) * 0.001);
      double lon = coordinate.longitude + (random.nextInt(100) * 0.001);
          
      String imagePath = 'resoures/icon_mark.png';
      Uint8List imageBytes = await imageToUint8List(imagePath);
    
      BMFCoordinate coord = BMFCoordinate(lat, lon);
      clusterInfoList.add(
          new BMFClusterInfo.iconData(coordinate: coord, iconData: imageBytes));
  }
  /// 设置聚合点最大距离
  bool res1 = await myMapController
        .setClusterMaxDistanceInDP(Platform.isIOS ? 200 : 100);
  print('最大距离设置结果：$res1');
    
  /// 设置聚合点的经纬度
  bool res = await myMapController.setClusterCoordinates(clusterInfoList);
  print('点聚合设置结果：$res');

/// 点聚合的点击事件
  /// android独有
  myMapController.setMapClusterClickCallback(
      callback: (List<BMFClusterInfo> clusterList, int size) {
    for (BMFClusterInfo item in clusterList) {
        print('setMapClusterClickCallback--
 item = ${item.toMap()}');
    }
        print('setMapClusterClickCallback--
 size = $size');
    });
        
    /// 双端共有回调
    myMapController.setMapClusterItemClickCallback(
        callback: (BMFClusterInfo cluster) {
      print('setMapClusterItemClickCallback--
 cluster = ${cluster.toMap()}');
    });