map4d_map_utils 1.0.0

Map4dMapUtils SDK for Flutter.

Map4dMap Utility Library for Flutter

A Flutter plugin that provides utility library for Map4dMap

Installing

Depend on it

To use this plugin, run command:

flutter pub add map4d_map_utils

Or add map4d_map_utils as a dependency in your pubspec.yaml file.

dependencies:
  map4d_map_utils: ^1.0.0

Import it

In your Dart code, you can use:

import 'package:map4d_map_utils/map4d_map_utils.dart';

Requirements

• Android SDK 21+
• iOS 9.3+

Example Usage

e.g. Marker Clustering:

import 'dart:math';
import 'package:flutter/material.dart';
import 'package:map4d_map/map4d_map.dart';
import 'package:map4d_map_utils/map4d_map_utils.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);
  final int maxClusterItemCount = 500;
  final double cameraLatitude = 16.0432432;
  final double cameraLongitude = 108.032432;

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Map4D Map Utility',
      home: MFMapView(
        initialCameraPosition: MFCameraPosition(
            target: MFLatLng(cameraLatitude, cameraLongitude), zoom: 10),
        onMapCreated: onMapCreated,
      ),
    );
  }

  void onMapCreated(MFMapViewController controller) {
    final clusterManager = MFClusterManager(
      controller: controller,
      onClusterTap: (cluster) => onClusterTap(cluster, controller)
    );
    // Generate cluster items
    const double extent = 0.2;
    for (int i = 0; i < maxClusterItemCount; i++) {
      double lat = cameraLatitude + extent * (Random().nextDouble() * 2.0 - 1.0);
      double lng = cameraLongitude + extent * (Random().nextDouble() * 2.0 - 1.0);
      final item = MFClusterItem(position: MFLatLng(lat, lng));
      clusterManager.addItem(item);
    }
    clusterManager.cluster();
  }

  void onClusterTap(MFCluster cluster, MFMapViewController controller) async {
    final zoom = await controller.getZoomLevel();
    controller.animateCamera(MFCameraUpdate.newLatLngZoom(cluster.position, zoom + 1));
  }
}