bdmap_location_flutter_plugin 0.0.1

BaiduMapLocation flutter plugin

example/lib/main.dart

import 'dart:async';

import 'package:bdmap_location_flutter_plugin/bdmap_location_flutter_plugin.dart';
import 'package:bdmap_location_flutter_plugin/flutter_baidu_location.dart';
import 'package:bdmap_location_flutter_plugin/flutter_baidu_location_android_option.dart';
import 'package:bdmap_location_flutter_plugin/flutter_baidu_location_ios_option.dart';
import 'package:flutter/material.dart';


void main() {
  runApp(new MaterialApp(
    home: new Home(),
    routes: {
      "/location/basicloc": (BuildContext context) => new BasicLoc(), // 基础定位
    },
  ));
}



class BasicLoc extends StatefulWidget {

  @override
  _MyAppState createState() => new _MyAppState();
}

class _MyAppState extends State<BasicLoc> {
  Map<String, Object> _loationResult;
  BaiduLocation _baiduLocation;

  StreamSubscription<Map<String, Object>> _locationListener;

  LocationFlutterPlugin _locationPlugin = new LocationFlutterPlugin();

  @override
  void initState() {
    super.initState();
    /// 动态申请定位权限
    _locationPlugin.requestPermission();

    /// 设置ios端ak, android端ak可以直接在清单文件中配置
    LocationFlutterPlugin.setApiKey("百度地图开放平台申请的ios端ak");

    _locationListener = _locationPlugin
        .onResultCallback()
        .listen((Map<String, Object> result) {
      setState(() {
        _loationResult = result;
        try {
          _baiduLocation = BaiduLocation.fromMap(result);
//          print(_baiduLocation);
        } catch (e) {
          print(e);
        }
      });
    });

  }

  @override
  void dispose() {
    super.dispose();
    if (null != _locationListener) {
      _locationListener.cancel();
    }
  }

  /// 设置android端和ios端定位参数
  void _setLocOption() {

    /// android 端设置定位参数
    BaiduLocationAndroidOption androidOption = new BaiduLocationAndroidOption();
    androidOption.setCoorType("bd09ll"); // 设置返回的位置坐标系类型
    androidOption.setIsNeedAltitude(true); // 设置是否需要返回海拔高度信息
    androidOption.setIsNeedAddres(true); // 设置是否需要返回地址信息
    androidOption.setIsNeedLocationPoiList(true); // 设置是否需要返回周边poi信息
    androidOption.setIsNeedNewVersionRgc(true); // 设置是否需要返回最新版本rgc信息
    androidOption.setIsNeedLocationDescribe(true); // 设置是否需要返回位置描述
    androidOption.setOpenGps(true); // 设置是否需要使用gps
    androidOption.setLocationMode(LocationMode.Hight_Accuracy); // 设置定位模式
    androidOption.setScanspan(1000); // 设置发起定位请求时间间隔

    Map androidMap = androidOption.getMap();

    /// ios 端设置定位参数
    BaiduLocationIOSOption iosOption = new BaiduLocationIOSOption();
    iosOption.setIsNeedNewVersionRgc(true); // 设置是否需要返回最新版本rgc信息
    iosOption.setBMKLocationCoordinateType("BMKLocationCoordinateTypeBMK09LL"); // 设置返回的位置坐标系类型
    iosOption.setActivityType("CLActivityTypeAutomotiveNavigation"); // 设置应用位置类型
    iosOption.setLocationTimeout(10); // 设置位置获取超时时间
    iosOption.setDesiredAccuracy("kCLLocationAccuracyBest");  // 设置预期精度参数
    iosOption.setReGeocodeTimeout(10); // 设置获取地址信息超时时间
    iosOption.setDistanceFilter(100); // 设置定位最小更新距离
    iosOption.setAllowsBackgroundLocationUpdates(true); // 是否允许后台定位
    iosOption.setPauseLocUpdateAutomatically(true); //  定位是否会被系统自动暂停

    Map iosMap = iosOption.getMap();

    _locationPlugin.prepareLoc(androidMap, iosMap);
  }

  /// 启动定位
  void _startLocation() {
    if (null != _locationPlugin) {
      _setLocOption();
      _locationPlugin.startLocation();
    }
  }

  /// 停止定位
  void _stopLocation() {
    if (null != _locationPlugin) {
      _locationPlugin.stopLocation();
    }
  }

  Container _createButtonContainer() {
    return new Container(
        alignment: Alignment.center,
        child: new Row(
          mainAxisSize: MainAxisSize.min,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: <Widget>[
            new RaisedButton(
              onPressed: _startLocation,
              child: new Text('开始定位'),
              color: Colors.blue,
              textColor: Colors.white,
            ),
            new Container(width: 20.0),
            new RaisedButton(
              onPressed: _stopLocation,
              child: new Text('停止定位'),
              color: Colors.blue,
              textColor: Colors.white,
            )
          ],
        ));
  }

  Widget _resultWidget(key, value) {
    return new Container(
      child: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              new Text('$key:' ' $value'),
            ]
        ),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    List<Widget> widgets = new List();

    if (_loationResult != null) {
      _loationResult.forEach((key, value) {
        widgets.add(_resultWidget(key, value));
      });
    }

    widgets.add(_createButtonContainer());


    return new MaterialApp(
        home: new Scaffold(
      appBar: new AppBar(
        title: new Text('基础定位'),
      ),
      body: new Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: widgets,
      ),
    ));
  }
}



class _HomeState extends State<Home> {
  @override
  void initState() {
    super.initState();
  }

  @override
  void dispose() {
    //注意这里关闭
    super.dispose();
  }

  List<Widget> render(BuildContext context, List children) {
    return ListTile.divideTiles(
        context: context,
        tiles: children.map((dynamic data) {
          return buildListTile(
              context, data["title"], data["subtitle"], data["url"]);
        })).toList();
  }

  Widget buildListTile(
      BuildContext context, String title, String subtitle, String url) {
    return new ListTile(
      onTap: () {
        Navigator.of(context).pushNamed(url);
      },
      isThreeLine: true,
      dense: false,
      leading: null,
      title: new Text(title),
      subtitle: new Text(subtitle),
      trailing: new Icon(
        Icons.arrow_right,
        color: Colors.blueAccent,
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
        appBar: new AppBar(
          title: new Text('百度地图定位flutter插件demo'),
        ),
        body: new Scrollbar(
            child: new ListView(
              children: render(context, [
                {
                  "title": "基础定位",
                  "subtitle": "能够返回经纬度、地址、位置描述、周边poi等各类定位结果信息",
                  "url": "/location/basicloc"
                },
              ]),
            )));
  }
}


class Home extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _HomeState();
  }
}