نشانگرهای خوشه ای
با مجموعهها، منظم بمانید
ذخیره و طبقهبندی محتوا براساس اولویتهای شما.

این مثال گروهی از نشانگرهای نزدیک را به عنوان یک خوشه تعریف می کند تا نقشه بتواند در صورت لزوم آنها را در یک نشانگر واحد جمع کند.
شروع کنید
قبل از اینکه بتوانید کد نمونه را امتحان کنید، باید محیط توسعه خود را پیکربندی کنید. برای اطلاعات بیشتر، راه اندازی یک پروژه فلاتر را ببینید.
کد را مشاهده کنید
دارت
// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import 'package:flutter/material.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';
/// Defines a group of nearby markers as a cluster so that the map can
/// collapse them into a single marker when appropriate.
class ClustersSample extends StatelessWidget {
ClustersSample({super.key});
final ClusterManager _myCluster = ClusterManager(
clusterManagerId: ClusterManagerId('my cluster'),
);
@override
Widget build(BuildContext context) {
return GoogleMap(
initialCameraPosition: CameraPosition(target: LatLng(0, 0)),
// You have to supply the list of clusters that are referred to
// by the map's markers.
//
// Note: For clusters to work on the web, you *must* import an additional
// JavaScript library. Read the web README for info:
// https://pub.dev/packages/google_maps_flutter_web
clusterManagers: {_myCluster},
markers: {
// Google Maps will smartly cluster markers with the same
// clusterManagerId. When zoomed in close enough, the cluster will
// break up into individual markers.
Marker(
markerId: MarkerId('in 1'),
position: LatLng(6.51, 3.37),
clusterManagerId: _myCluster.clusterManagerId,
),
Marker(
markerId: MarkerId('in 2'),
position: LatLng(6.64, 3.52),
clusterManagerId: _myCluster.clusterManagerId,
),
Marker(
markerId: MarkerId('in 3'),
position: LatLng(6.46, 3.58),
clusterManagerId: _myCluster.clusterManagerId,
),
Marker(
markerId: MarkerId('in 4'),
position: LatLng(6.85, 3.63),
clusterManagerId: _myCluster.clusterManagerId,
),
// Markers without a clusterManagerId will always show independently.
Marker(markerId: MarkerId('out'), position: LatLng(5.31, -3.99)),
},
);
}
}
مراحل بعدی
مجموعه کامل نمونه ها را در GitHub مشاهده کنید:
در GitHub مشاهده کنید
همچنین، با اجرای دستورات زیر، مجموعه کامل نمونهها را برای اجرای محلی آنها کلون کنید:
git clone -b flutter_samples https://github.com/googlemaps-samples/flutter-maps-samples.git
cd flutter-samples
flutter pub get
جز در مواردی که غیر از این ذکر شده باشد،محتوای این صفحه تحت مجوز Creative Commons Attribution 4.0 License است. نمونه کدها نیز دارای مجوز Apache 2.0 License است. برای اطلاع از جزئیات، به خطمشیهای سایت Google Developers مراجعه کنید. جاوا علامت تجاری ثبتشده Oracle و/یا شرکتهای وابسته به آن است.
تاریخ آخرین بهروزرسانی 2025-09-04 بهوقت ساعت هماهنگ جهانی.
[null,null,["تاریخ آخرین بهروزرسانی 2025-09-04 بهوقت ساعت هماهنگ جهانی."],[],[],null,["# Cluster markers\n\nThis example defines a group of nearby markers as a cluster so that the map can collapse them into a single marker when appropriate.\n\nGet started\n-----------\n\nBefore you can try the sample code, you must configure your development environment.\nFor more information, see [Set up a Flutter project](/maps/flutter-package/config).\n\nView the code\n-------------\n\n### Dart\n\n```python\n// Copyright 2025 Google LLC\n//\n// Licensed under the Apache License, Version 2.0 (the \"License\");\n// you may not use this file except in compliance with the License.\n// You may obtain a copy of the License at\n//\n// https://www.apache.org/licenses/LICENSE-2.0\n//\n// Unless required by applicable law or agreed to in writing, software\n// distributed under the License is distributed on an \"AS IS\" BASIS,\n// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n// See the License for the specific language governing permissions and\n// limitations under the License.\n\nimport 'package:flutter/material.dart';\nimport 'package:google_maps_flutter/google_maps_flutter.dart';\n\n/// Defines a group of nearby markers as a cluster so that the map can\n/// collapse them into a single marker when appropriate.\nclass ClustersSample extends StatelessWidget {\n ClustersSample({super.key});\n\n final ClusterManager _myCluster = ClusterManager(\n clusterManagerId: ClusterManagerId('my cluster'),\n );\n\n @override\n Widget build(BuildContext context) {\n return GoogleMap(\n initialCameraPosition: CameraPosition(target: LatLng(0, 0)),\n\n // You have to supply the list of clusters that are referred to\n // by the map's markers.\n //\n // Note: For clusters to work on the web, you *must* import an additional\n // JavaScript library. Read the web README for info:\n // https://pub.dev/packages/google_maps_flutter_web\n clusterManagers: {_myCluster},\n markers: {\n // Google Maps will smartly cluster markers with the same\n // clusterManagerId. When zoomed in close enough, the cluster will\n // break up into individual markers.\n Marker(\n markerId: MarkerId('in 1'),\n position: LatLng(6.51, 3.37),\n clusterManagerId: _myCluster.clusterManagerId,\n ),\n Marker(\n markerId: MarkerId('in 2'),\n position: LatLng(6.64, 3.52),\n clusterManagerId: _myCluster.clusterManagerId,\n ),\n Marker(\n markerId: MarkerId('in 3'),\n position: LatLng(6.46, 3.58),\n clusterManagerId: _myCluster.clusterManagerId,\n ),\n Marker(\n markerId: MarkerId('in 4'),\n position: LatLng(6.85, 3.63),\n clusterManagerId: _myCluster.clusterManagerId,\n ),\n\n // Markers without a clusterManagerId will always show independently.\n Marker(markerId: MarkerId('out'), position: LatLng(5.31, -3.99)),\n },\n );\n }\n}\nhttps://github.com/googlemaps-samples/flutter-maps-samples/blob/8f227e8b4d07179e5fb7cc5e8d8cb5440befd229/lib/samples/marker_clusters.dart\n \n```\n\nNext steps\n----------\n\nView the complete set of samples on GitHub:\n\n[View on GitHub](https://github.com/googlemaps-samples/flutter-maps-samples/tree/main/lib/samples)\n\nAlternatively, clone the full set of samples to run them locally by executing the following commands: \n\n git clone -b flutter_samples https://github.com/googlemaps-samples/flutter-maps-samples.git\n cd flutter-samples\n flutter pub get"]]