amap_flutter_sdk 0.1.6

Unified AMap Flutter SDK — Map, Location and Search for Android & iOS. Unofficial community plugin; not affiliated with Amap.

example/lib/main.dart

import 'package:amap_flutter_sdk/amap_flutter_sdk.dart';
import 'package:flutter/material.dart';
import 'package:permission_handler/permission_handler.dart';

/// 请替换为你在高德开放平台申请的 Key
const _androidKey = 'YOUR_ANDROID_KEY';
const _iosKey = 'YOUR_IOS_KEY';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'AMap Flutter SDK Demo',
      theme: ThemeData(colorSchemeSeed: Colors.blue, useMaterial3: true),
      home: const HomePage(),
    );
  }
}

class HomePage extends StatefulWidget {
  const HomePage({super.key});

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  bool _ready = false;

  @override
  void initState() {
    super.initState();
    _initSdk();
  }

  Future<void> _initSdk() async {
    await AMapSdk.init(
      androidKey: _androidKey,
      iosKey: _iosKey,
      privacy: const AMapPrivacy(),
    );
    if (mounted) setState(() => _ready = true);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('amap_flutter_sdk Demo')),
      body: !_ready
          ? const Center(child: CircularProgressIndicator())
          : ListView(
              children: [
                ListTile(
                  title: const Text('地图 Map'),
                  subtitle: const Text('AMapView / Marker / Camera'),
                  onTap: () => Navigator.push(
                    context,
                    MaterialPageRoute(builder: (_) => const MapDemoPage()),
                  ),
                ),
                ListTile(
                  title: const Text('定位 Location'),
                  subtitle: const Text('单次/连续定位'),
                  onTap: () => Navigator.push(
                    context,
                    MaterialPageRoute(builder: (_) => const LocationDemoPage()),
                  ),
                ),
                ListTile(
                  title: const Text('搜索 Search'),
                  subtitle: const Text('POI / 地理编码 / 行政区'),
                  onTap: () => Navigator.push(
                    context,
                    MaterialPageRoute(builder: (_) => const SearchDemoPage()),
                  ),
                ),
              ],
            ),
    );
  }
}

class MapDemoPage extends StatefulWidget {
  const MapDemoPage({super.key});

  @override
  State<MapDemoPage> createState() => _MapDemoPageState();
}

class _MapDemoPageState extends State<MapDemoPage> {
  AMapController? _controller;
  final Map<String, Marker> _markers = {};

  @override
  Widget build(BuildContext context) {
    AMapSdk.ensureMapReady(
      context,
      androidKey: _androidKey,
      iosKey: _iosKey,
    );
    return Scaffold(
      appBar: AppBar(title: const Text('地图')),
      body: AMapView(
        initialCameraPosition: const CameraPosition(
          target: LatLng(39.909187, 116.397451),
          zoom: 12,
        ),
        markers: Set<Marker>.of(_markers.values),
        onMapCreated: (c) {
          _controller = c;
          final m = Marker(
            position: const LatLng(39.909187, 116.397451),
            infoWindow: const InfoWindow(title: '天安门'),
          );
          setState(() => _markers[m.id] = m);
        },
        onTap: (latLng) {
          _controller?.moveCamera(
            CameraUpdate.newLatLng(latLng),
            animated: true,
          );
        },
      ),
    );
  }
}

class LocationDemoPage extends StatefulWidget {
  const LocationDemoPage({super.key});

  @override
  State<LocationDemoPage> createState() => _LocationDemoPageState();
}

class _LocationDemoPageState extends State<LocationDemoPage> {
  final _client = AMapLocationClient();
  String _text = '未开始';

  @override
  void initState() {
    super.initState();
    _client.onLocationChanged().listen((r) {
      setState(() {
        if (!r.isSuccess) {
          _text = '失败: ${r.errorCode} ${r.errorInfo}';
        } else {
          _text =
              '${r.latitude}, ${r.longitude}\n${r.address ?? r.description ?? ''}';
        }
      });
    });
  }

  Future<void> _start() async {
    final status = await Permission.locationWhenInUse.request();
    if (!status.isGranted) {
      setState(() => _text = '无定位权限');
      return;
    }
    await _client.setLocationOption(AMapLocationOption(
      onceLocation: true,
      needAddress: true,
      locationMode: AMapLocationMode.highAccuracy,
    ));
    await _client.startLocation();
  }

  @override
  void dispose() {
    _client.destroy();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('定位')),
      body: Padding(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            ElevatedButton(onPressed: _start, child: const Text('开始定位')),
            const SizedBox(height: 16),
            Text(_text),
          ],
        ),
      ),
    );
  }
}

class SearchDemoPage extends StatefulWidget {
  const SearchDemoPage({super.key});

  @override
  State<SearchDemoPage> createState() => _SearchDemoPageState();
}

class _SearchDemoPageState extends State<SearchDemoPage> {
  final _keyword = TextEditingController(text: '北京大学');
  String _result = '';

  Future<void> _searchPoi() async {
    try {
      final r = await AMapSearchClient.searchPoi(
        keyword: _keyword.text,
        city: '北京',
      );
      setState(() {
        _result = r.pois
            .take(10)
            .map((e) => '${e.name} (${e.location?.latitude},${e.location?.longitude})')
            .join('\n');
      });
    } catch (e) {
      setState(() => _result = 'POI 失败: $e');
    }
  }

  Future<void> _geocode() async {
    try {
      final list = await AMapSearchClient.geocode(
        address: _keyword.text,
        city: '北京',
      );
      setState(() {
        _result = list
            .map((e) =>
                '${e.formattedAddress} -> ${e.location?.latitude},${e.location?.longitude}')
            .join('\n');
      });
    } catch (e) {
      setState(() => _result = '地理编码失败: $e');
    }
  }

  Future<void> _regeocode() async {
    try {
      final r = await AMapSearchClient.regeocode(
        location: const LatLng(39.909187, 116.397451),
      );
      setState(() => _result = r.formattedAddress);
    } catch (e) {
      setState(() => _result = '逆地理失败: $e');
    }
  }

  Future<void> _district() async {
    try {
      final list = await AMapSearchClient.searchDistrict(keyword: '北京市');
      setState(() {
        _result = list
            .map((e) =>
                '${e.name} ${e.adCode} children=${e.districts.length}')
            .join('\n');
      });
    } catch (e) {
      setState(() => _result = '行政区失败: $e');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('搜索')),
      body: Padding(
        padding: const EdgeInsets.all(16),
        child: Column(
          children: [
            TextField(controller: _keyword, decoration: const InputDecoration(labelText: '关键字/地址')),
            Wrap(
              spacing: 8,
              children: [
                ElevatedButton(onPressed: _searchPoi, child: const Text('POI')),
                ElevatedButton(onPressed: _geocode, child: const Text('地理编码')),
                ElevatedButton(onPressed: _regeocode, child: const Text('逆地理')),
                ElevatedButton(onPressed: _district, child: const Text('行政区')),
              ],
            ),
            const SizedBox(height: 12),
            Expanded(child: SingleChildScrollView(child: Text(_result))),
          ],
        ),
      ),
    );
  }
}