Menggambar polyline di peta

Contoh ini menampilkan peta Samudra Atlantik Utara dengan rute Titanic yang digambar di atasnya.

Mulai

Anda harus mengonfigurasi lingkungan pengembangan Anda sebelum dapat mencoba kode contoh. Untuk mengetahui informasi selengkapnya, lihat Menyiapkan project Flutter.

Melihat kode

Dart

// 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';

/// Displays a map of the North Atlantic Ocean with the route of the Titanic
/// marked on it.
class PolylinesSample extends StatelessWidget {
  const PolylinesSample({super.key});

  @override
  Widget build(BuildContext context) {
    return GoogleMap(
      initialCameraPosition: CameraPosition(target: LatLng(49, -23)),
      polylines: {
        Polyline(
          // Polyline id must be unique.
          polylineId: PolylineId('titanic route'),
          points: [
            LatLng(50.90, -1.41), // Southampton
            LatLng(49.65, -1.60), // Cherbourg
            LatLng(49.77, -6.71),
            LatLng(51.83, -8.28), // Cobh
            LatLng(50.96, -8.58),
            LatLng(41.75, -49.90), // Wreck
          ],
          width: 5,
          color: Colors.red,
          geodesic: true,
          // Custom caps and joint types aren't supported on all platforms.
          startCap: Cap.roundCap,
          endCap: Cap.roundCap,
          jointType: JointType.round,
          consumeTapEvents: true,
          onTap: () => debugPrint('clicked route'),
        ),
      },
    );
  }
}
polylines.dart
    

Langkah berikutnya

Lihat kumpulan contoh lengkap di GitHub:

Lihat di GitHub

Atau, clone kumpulan sampel lengkap untuk menjalankannya secara lokal dengan menjalankan perintah berikut:

  git clone -b flutter_samples https://github.com/googlemaps-samples/flutter-maps-samples.git
  cd flutter-samples
  flutter pub get