amap_location 0.0.5

A Flutter plugin to use amap location.高德地图定位组件

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:amap_location/amap_location.dart';
import 'package:async_loader/async_loader.dart';

void main() {
  /*============*/
  //设置ios的key
  /*=============*/
  AMapLocationClient.setApiKey("a5bae506b2d053ed4ae7827f38b1766d");
  /*============*/
  //设置ios的key
  /*=============*/

  runApp(new MaterialApp(
    home: new Home(),
    routes: {
      "/location/get": (BuildContext context) => new LocationGet(),
      "/location/listen": (BuildContext content) => new LocationListen()
    },
  ));
}

class _LocationGetState extends State {
  @override
  Widget build(BuildContext context) {
    return new Scaffold(
        appBar: new AppBar(
          title: new Text('直接获取定位'),
        ),
        body: new Center(
            child: new AsyncLoader(
          renderLoad: () => new CircularProgressIndicator(),
          initState: () async => await AMapLocationClient.getLocation(true),
          renderSuccess: ({data}) {
            AMapLocation loc = data;
            return new Text(getLocationStr(loc));
          },
          renderError: ([error]) {
            return new Text("定位失败");
          },
        )));
  }

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

  @override
  void dispose() {
    //这里可以停止定位
    //AMapLocationClient.stopLocation();

    super.dispose();
  }
}

class LocationGet extends StatefulWidget {
  @override
  State<StatefulWidget> createState() => new _LocationGetState();
}

String getLocationStr(AMapLocation loc) {
  if (loc == null) {
    return "正在定位";
  }

  if (loc.isSuccess()) {
    if (loc.hasAddress()) {
      return "定位成功: \n时间${loc.timestamp}\n经纬度:${loc.latitude} ${loc.longitude}\n 地址:${loc.formattedAddress} 城市:${loc.city} 省:${loc.province}";
    } else {
      return "定位成功: \n时间${loc.timestamp}\n经纬度:${loc.latitude} ${loc.longitude}\n ";
    }
  } else {
    return "定位失败: \n错误:{code=${loc.code},description=${loc.description}";
  }
}

class _LocationListenState extends State {
  String location;

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
        appBar: new AppBar(
          title: new Text('监听定位改变'),
        ),
        body: new Center(
          child: new Text(location),
        ));
  }

  @override
  void initState() {
    AMapLocationClient.onLocationUpate.listen((AMapLocation loc) {
      if (!mounted) return;
      setState(() {
        location = getLocationStr(loc);
      });
    });

    location = getLocationStr(null);

    AMapLocationClient.startLocation();

    super.initState();
  }

  @override
  void dispose() {
    //注意这里停止监听
    AMapLocationClient.stopLocation();
    super.dispose();
  }
}

class LocationListen extends StatefulWidget {
  @override
  State<StatefulWidget> createState() => new _LocationListenState();
}

class _HomeState extends State<Home> {
  @override
  void initState() {
    //启动客户端,这里设置ios端的精度小一点
    AMapLocationClient.startup(new AMapLocationOption(
        desiredAccuracy: CLLocationAccuracy.kCLLocationAccuracyHundredMeters));
    super.initState();
  }

  @override
  void dispose() {
    //注意这里关闭
    AMapLocationClient.shutdown();
    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('高德地图定位'),
        ),
        body: new Scrollbar(
            child: new ListView(
          children: render(context, [
            {
              "title": "直接获取定位",
              "subtitle": "不需要先启用监听就可以直接获取定位",
              "url": "/location/get"
            },
            {"title": "监听定位", "subtitle": "启动定位改变监听", "url": "/location/listen"}
          ]),
        )));
  }
}

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