Flutter百度地图和定位集成

记录一下集成百度地图的步骤 

1、申请百度地图ak(过程简单,不赘述)

2、AndroidMenifest.xml中的application里引入ak信息:

        android:name=".MyApplication"

        android:icon="@mipmap/ic_launcher">

                android:name="com.baidu.lbsapi.API_KEY"

                android:value="你申请的ak" />

3、在pubspec.yaml中引入依赖(记得get package一下)

dependencies:

  flutter:

    sdk: flutter

  flutter_bmflocation: ^1.0.2

  flutter_bmfmap:  ^1.0.2

4、替换Application为百度的

import com.baidu.flutter_bmfbase.BmfMapApplication;

public class MyApplication extends BmfMapApplication {

}

        android:name=".MyApplication"

        android:icon="@mipmap/ic_launcher">

5、添加资源文件

6、初始化定位

import 'dart:async';

import 'package:flutter_bmflocation/bdmap_location_flutter_plugin.dart';

import 'package:flutter_bmflocation/flutter_baidu_location_android_option.dart';

import 'package:flutter_bmfmap/BaiduMap/map/bmf_map_controller.dart';

import 'package:flutter_bmfmap/BaiduMap/models/overlays/bmf_marker.dart';

import 'package:flutter_bmfbase/BaiduMap/bmfmap_base.dart' show BMFCoordinate;

class LocationUtils {

  static LocationFlutterPlugin _locationPlugin = LocationFlutterPlugin();

  static StreamSubscription> _locationListener; // 事件监听

  // 启动定位

  static void handleStartLocation({Function callback}) {

    if (null != _locationPlugin) {

      _setupListener(callback);

      _setLocOption();

      _locationPlugin.startLocation();

    }

  }

  static _setLocOption() async {

    BaiduLocationAndroidOption androidOption = new BaiduLocationAndroidOption();

    // androidOption.setCoorType("bd09ll");

    /// 可选,设置返回经纬度坐标类型,默认gcj02

    /// gcj02:国测局坐标;

    /// bd09ll:百度经纬度坐标;

    /// bd09:百度墨卡托坐标;

    /// 海外地区定位,无需设置坐标类型,统一返回wgs84类型坐标

    androidOption.setIsNeedAltitude(true);

    /// 可选,设置是否需要返回海拔高度信息,true为需要返回

    androidOption.setIsNeedAddres(true);

    /// 可选,设置是否需要返回地址信息,true为需要返回

    androidOption.setIsNeedLocationPoiList(true);

    /// 可选,设置是否需要返回周边poi信息,true为需要返回

    androidOption.setIsNeedNewVersionRgc(true);

    /// 可选,设置是否需要返回新版本rgc信息,true为需要返回

    androidOption.setIsNeedLocationDescribe(true);

    /// 可选,设置是否需要返回位置描述信息,true为需要返回

    androidOption.setOpenGps(true);

    /// 可选,设置是否需要使用gps,true为需要使用

    androidOption.setLocationMode(LocationMode.Hight_Accuracy);

    /// 可选,设置定位模式,可选的模式有高精度、低功耗、仅设备,默认为高精度模式,可选值如下:

    /// 高精度模式: LocationMode.Hight_Accuracy

    /// 低功耗模式:LocationMode.Battery_Saving

    /// 仅设备(Gps)模式:LocationMode.Device_Sensors

    androidOption.setScanspan(1000);

    /// 可选,设置发起定位请求的间隔,int类型,单位ms

    /// 如果设置为0,则代表单次定位,即仅定位一次,默认为0

    /// 如果设置非0,需设置1000ms以上才有效

    androidOption.setLocationPurpose(BDLocationPurpose.SignIn);

    /// 可选,设置场景定位参数,包括签到场景、运动场景、出行场景,可选值如下:

    /// 签到场景: BDLocationPurpose.SignIn

    /// 运动场景: BDLocationPurpose.Transport

    /// 出行场景: BDLocationPurpose.Sport

    Map androidMap = androidOption.getMap();

    _locationPlugin.prepareLoc(androidMap, null);

  }

// 返回定位信息

  static void _setupListener(callback) {

    if (_locationListener != null) {

      return;

    }

    _locationListener =

        _locationPlugin.onResultCallback().listen((Map result) {

      callback(result);

    });

  }

  static void cancel() {

    // 取消监听

    if (null != _locationListener) {

      _locationListener.cancel();

    }

  }

  /// 创建完成回调

  static onBMFMapCreated(

      BMFMapController controller, double latitude, double longitude) {

    BMFMapController myMapController = controller;

    List _markers = [];

    /// 批量添加大头针

    _markers.add(BMFMarker(

        position: BMFCoordinate(latitude + 0.0002, longitude + 0.0002),

        title: '第二个',

        subtitle: 'test',

        identifier: 'flutter_marker',

        icon: 'assets/icon_binding_point.png',

        enabled: false,

        draggable: false));

    myMapController?.addMarkers(_markers);

    /// 地图加载回调

    myMapController?.setMapDidLoadCallback(callback: () {

      print('mapDidLoad-地图加载完成');

    });

  }

}

7、在widget中使用

import 'dart:async';

import 'dart:io';

import 'package:chargebd/locationUtils.dart';

import 'package:flutter/material.dart';

import 'package:flutter_bmflocation/bdmap_location_flutter_plugin.dart';

import 'package:flutter_bmflocation/flutter_baidu_location.dart';

import 'package:flutter_bmflocation/flutter_baidu_location_android_option.dart';

import 'package:flutter_bmflocation/flutter_baidu_location_ios_option.dart';

import 'package:flutter_bmfbase/BaiduMap/bmfmap_base.dart'

    show BMFCoordinate, BMFEdgeInsets, BMFMapSDK, BMF_COORD_TYPE;

import 'package:flutter_bmfmap/BaiduMap/map/bmf_map_controller.dart';

import 'package:flutter_bmfmap/BaiduMap/map/bmf_map_view.dart';

import 'package:flutter_bmfmap/BaiduMap/models/bmf_map_options.dart';

import 'package:flutter_bmfmap/BaiduMap/models/overlays/bmf_marker.dart';

void main() {

  runApp(MyApp());

  if (Platform.isIOS) {

    // BMFMapSDK.setApiKeyAndCoordType(

    //    '请输入百度开放平台申请的iOS端API KEY', BMF_COORD_TYPE.BD09LL);

  } else if (Platform.isAndroid) {

// Android 目前不支持接口设置Apikey,

// 请在主工程的Manifest文件里设置,详细配置方法请参考[https://lbsyun.baidu.com/ 官网][https://lbsyun.baidu.com/)demo

    BMFMapSDK.setCoordType(BMF_COORD_TYPE.BD09LL);

  }

}

class MyApp extends StatelessWidget {

  @override

  Widget build(BuildContext context) {

    return MaterialApp(

      title: 'Flutter Demo',

      theme: ThemeData(

        primarySwatch: Colors.blue,

        visualDensity: VisualDensity.adaptivePlatformDensity,

      ),

      home: MyHomePage(title: 'Flutter Demo Home Page'),

    );

  }

}

class MyHomePage extends StatefulWidget {

  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override

  _MyHomePageState createState() => _MyHomePageState();

}

class _MyHomePageState extends State {

  BMFMapOptions mapOptions;

  BaiduLocation _baiduLocation;

  @override

  void initState() {

    super.initState();

    LocationUtils.handleStartLocation(callback: locationCallback);

  }

  @override

  Widget build(BuildContext context) {

    var screenSize = MediaQuery.of(context).size;

    return Scaffold(

      body: Center(

        child: Column(

          mainAxisAlignment: MainAxisAlignment.center,

          children: [

            Container(

              height: screenSize.height,

              width: screenSize.width,

              child: mapOptions == null

                  ? null

                  : Stack(

                      children: [

                        BMFMapWidget(

                          onBMFMapCreated: (controller) {

                            LocationUtils.onBMFMapCreated(

                                controller,

                                _baiduLocation?.latitude,

                                _baiduLocation?.longitude);

                          },

                          mapOptions: mapOptions,

                        ),

                      ],

                    ),

            )

          ],

        ),

      ),

    );

  }

  locationCallback(Map result) {

    setState(() {

      try {

        _baiduLocation = BaiduLocation.fromMap(result);

        print('lat==${_baiduLocation.latitude}');

        print('lon==${_baiduLocation.longitude}');

        mapOptions = BMFMapOptions(

            center: BMFCoordinate(

                _baiduLocation?.latitude ?? 0, _baiduLocation?.longitude ?? 0),

            zoomLevel: 18,

            mapPadding: BMFEdgeInsets(left: 30, top: 0, right: 30, bottom: 0));

      } catch (e) {

        print(e);

      }

    });

  }

  @override

  void dispose() {

    super.dispose();

    LocationUtils.cancel();

  }

}

8、实现效果

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