Menambahkan penanda ke peta

Contoh ini menunjukkan cara menggunakan bitmap kustom untuk penanda peta.

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';

/// Shows advanced options of markers.
class CustomMarkerSample extends StatefulWidget {
  const CustomMarkerSample({super.key});

  @override
  State<CustomMarkerSample> createState() => _CustomMarkerSampleState();
}

class _CustomMarkerSampleState extends State<CustomMarkerSample> {
  late Marker _marker = Marker(
    markerId: MarkerId('my_marker'),
    // Start with the default Google Maps pin, except yellow.
    // (Note: Hue isn't supported on all platforms.)
    icon: BitmapDescriptor.defaultMarkerWithHue(BitmapDescriptor.hueYellow),
    onTap: _changeIcon,
  );

  @override
  Widget build(BuildContext context) {
    return GoogleMap(
      initialCameraPosition: CameraPosition(target: LatLng(0, 0)),
      markers: {_marker},
    );
  }

  void _changeIcon() async {
    // Set up the image configuration for the new icon, including its size.
    final imageConfiguration = createLocalImageConfiguration(
      context,
      size: Size(42, 52),
    );

    // Load the icon image from an asset.
    // Alternatively, you can create the icon with BitmapDescriptor.bytes(),
    // which allows loading from network or using a CustomPainter.
    final assetIcon = await BitmapDescriptor.asset(
      imageConfiguration,
      'assets/icon_flutter.png',
    );

    setState(() {
      // Modify the existing marker with the new icon and set its anchor
      // to center.
      _marker = _marker.copyWith(
        iconParam: assetIcon,
        anchorParam: const Offset(0.5, 0.5),
      );
    });
  }
}
marker_custom.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