Flutter高德地图搜索组件

插件地址github：
https://github.com/fluttify-project/amap_search_fluttify
flutter pub:
https://pub.flutter-io.cn/packages/amap_search_fluttify

Flutter 签名方法（如果没有生成过签名文件，参考此文章）
https://www.jianshu.com/p/248eeb5d6535

Android Studio配置：
1.配置 android\app\src\main\AndroidManifest.xml文件
在AndroidManifest.xml的application标签中配置Key(这一步不要搞错了。是application标签中配置Key)：

<meta-data
    android:name="com.amap.api.v2.apikey"
    android:value="您的Key"/>

在AndroidManifest.xml中配置权限:

//地图包、搜索包需要的基础权限
     
<!--允许程序打开网络套接字-->
<uses-permission android:name="android.permission.INTERNET" />  
<!--允许程序设置内置sd卡的写权限-->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />    
<!--允许程序获取网络状态-->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
<!--允许程序访问WiFi网络信息-->
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> 
<!--允许程序读写手机状态和身份-->
<uses-permission android:name="android.permission.READ_PHONE_STATE" />     
<!--允许程序访问CellID或WiFi热点来获取粗略的位置-->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 

开始安装:

dependencies:
  amap_search_fluttify: ^0.2.11+d2eb645

导入:

import 'package:amap_search_fluttify/amap_search_fluttify.dart';

使用：

/// !注意: 只要是返回Future的方法, 一律使用`await`修饰, 确保当前方法执行完成后再执行下一行, 在不能使用`await`修饰的环境下, 在`then`方法中执行下一步.
/// 初始化 iOS在init方法中设置, android需要去AndroidManifest.xml里去设置, 详见https://lbs.amap.com/api/android-sdk/gettingstarted
await AmapCore.init('ios key');

/// !重要: 通过AmapSearchDisposeMixin释放native端的对象, 否则native端会内存泄漏!
class _KeywordPoiScreenState extends State<KeywordPoiScreen> with AmapSearchDisposeMixin {}

/// 搜索关键字poi
final poiList = await AmapSearch.searchKeyword(
                _keywordController.text,
                city: _cityController.text,
              );

/// 搜索周边poi
final poiList = await AmapSearch.searchAround(
                LatLng(
                  double.tryParse(_latController.text) ?? 29.08,
                  double.tryParse(_lngController.text) ?? 119.65,
                ),
                keyword: _keywordController.text,
              );

/// 输入提示
final inputTipList = await AmapSearch.fetchInputTips(
                _keywordController.text,
                city: _cityController.text,
              );

/// 地理编码（地址转坐标）
final geocodeList = await AmapSearch.searchGeocode(
                _keywordController.text,
                city: _cityController.text,
              );

/// 逆地理编码（坐标转地址）
final reGeocodeList = await AmapSearch.searchReGeocode(
                LatLng(
                  double.parse(_latController.text),
                  double.parse(_lngController.text),
                ),
                radius: 200.0,
              );

/// 获取行政区划数据
final district = await AmapSearch.searchDistrict(_keywordController.text);

/// 获取天气数据
final district = await AmapSearch.searchDistrict(_keywordController.text);

/// 公交路径规划(未完成)
final routeResult = await AmapSearch.searchBusRoute(
                from: LatLng(
                  double.parse(_fromLatController.text),
                  double.parse(_fromLngController.text),
                ),
                to: LatLng(
                  double.parse(_toLatController.text),
                  double.parse(_toLngController.text),
                ),
                city: '杭州',
              );

/// 驾车路径规划
final routeResult = await AmapSearch.searchDriveRoute(
                from: LatLng(
                  double.parse(_fromLatController.text),
                  double.parse(_fromLngController.text),
                ),
                to: LatLng(
                  double.parse(_toLatController.text),
                  double.parse(_toLngController.text),
                ),
              );

/// 骑行路径规划
final routeResult = await AmapSearch.searchRideRoute(
                from: LatLng(
                  double.parse(_fromLatController.text),
                  double.parse(_fromLngController.text),
                ),
                to: LatLng(
                  double.parse(_toLatController.text),
                  double.parse(_toLngController.text),
                ),
              );

/// 步行路径规划
final routeResult = await AmapSearch.searchWalkRoute(
                from: LatLng(
                  double.parse(_fromLatController.text),
                  double.parse(_fromLngController.text),
                ),
                to: LatLng(
                  double.parse(_toLatController.text),
                  double.parse(_toLngController.text),
                ),
              );

例子:

import 'package:amap_search_fluttify/amap_search_fluttify.dart';
import 'package:amap_search_fluttify_example/widgets/function_item.widget.dart';
import 'package:amap_search_fluttify_example/widgets/scrollable_text.widget.dart';
import 'package:decorated_flutter/decorated_flutter.dart';
import 'package:flutter/material.dart';
import 'package:rxdart/rxdart.dart';

class GetPoiScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      resizeToAvoidBottomPadding: false,
      appBar: AppBar(title: Text('获取POI数据')),
      body: ListView(
        children: <Widget>[
          FunctionItem(
            label: '关键字检索POI',
            sublabel: 'KeywordPoiScreen',
            target: KeywordPoiScreen(),
          ),
          FunctionItem(
            label: '周边检索POI',
            sublabel: 'AroundPoiScreen',
            target: AroundPoiScreen(),
          ),
          FunctionItem(
            label: '输入提示',
            sublabel: 'InputTipScreen',
            target: InputTipScreen(),
          ),
        ],
      ),
    );
  }
}

/// 关键字检索POI
class KeywordPoiScreen extends StatefulWidget {
  @override
  _KeywordPoiScreenState createState() => _KeywordPoiScreenState();
}

class _KeywordPoiScreenState extends State<KeywordPoiScreen>
    with AmapSearchDisposeMixin {
  final _keywordController = TextEditingController(text: '肯德基');
  final _cityController = TextEditingController(text: '杭州');

  List<String> _poiTitleList = [];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      resizeToAvoidBottomPadding: false,
      appBar: AppBar(title: Text('关键字检索POI')),
      body: DecoratedColumn(
        padding: EdgeInsets.all(kSpaceBig),
        children: <Widget>[
          TextFormField(
            controller: _keywordController,
            decoration: InputDecoration(hintText: '输入关键字'),
          ),
          TextFormField(
            controller: _cityController,
            decoration: InputDecoration(hintText: '输入城市'),
          ),
          RaisedButton(
            onPressed: () async {
              final poiList = await AmapSearch.searchKeyword(
                _keywordController.text,
                city: _cityController.text,
              );

              Observable.fromIterable(poiList)
                  .asyncMap((it) async =>
                      'title: ' +
                      (await it.title) +
                      ', address: ' +
                      (await it.address) +
                      ', businessArea: ' +
                      (await it.businessArea) +
                      ', ' +
                      (await it.latLng).toString())
                  .toList()
                  .then((it) => setState(() => _poiTitleList = it));
            },
            child: Text('搜索'),
          ),
          Expanded(child: ScrollableText(_poiTitleList.join("\n"))),
        ],
      ),
    );
  }
}

/// 附近检索POI
class AroundPoiScreen extends StatefulWidget {
  @override
  _AroundPoiScreenState createState() => _AroundPoiScreenState();
}

class _AroundPoiScreenState extends State<AroundPoiScreen>
    with AmapSearchDisposeMixin {
  final _keywordController = TextEditingController();
  final _typeController = TextEditingController();
  final _latController = TextEditingController(text: '29.08');
  final _lngController = TextEditingController(text: '119.65');

  List<String> _poiTitleList = [];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      resizeToAvoidBottomPadding: false,
      appBar: AppBar(title: Text('周边检索POI')),
      body: DecoratedColumn(
        padding: EdgeInsets.all(kSpaceBig),
        children: <Widget>[
          TextFormField(
            controller: _keywordController,
            decoration: InputDecoration(hintText: '输入关键字'),
          ),
          TextFormField(
            controller: _typeController,
            decoration: InputDecoration(hintText: '输入类别'),
          ),
          DecoratedRow(
            children: <Widget>[
              Flexible(
                child: TextField(
                  controller: _latController,
                  decoration: InputDecoration(hintText: '输入纬度'),
                ),
              ),
              SPACE_SMALL_HORIZONTAL,
              Flexible(
                child: TextField(
                  controller: _lngController,
                  decoration: InputDecoration(hintText: '输入经度'),
                ),
              ),
            ],
          ),
          RaisedButton(
            onPressed: () async {
              final poiList = await AmapSearch.searchAround(
                LatLng(
                  double.tryParse(_latController.text) ?? 29.08,
                  double.tryParse(_lngController.text) ?? 119.65,
                ),
                keyword: _keywordController.text,
                type: _typeController.text,
              );

              Observable.fromIterable(poiList)
                  .asyncMap((it) async =>
                      'title: ' +
                      (await it.title) +
                      ', address: ' +
                      (await it.address) +
                      ', businessArea: ' +
                      (await it.businessArea) +
                      ', ' +
                      (await it.latLng).toString())
                  .toList()
                  .then((it) => setState(() => _poiTitleList = it));
            },
            child: Text('搜索'),
          ),
          Expanded(child: ScrollableText(_poiTitleList.join("\n"))),
        ],
      ),
    );
  }
}

/// 输入提示
class InputTipScreen extends StatefulWidget {
  @override
  _InputTipScreenState createState() => _InputTipScreenState();
}

class _InputTipScreenState extends State<InputTipScreen>
    with AmapSearchDisposeMixin {
  final _keywordController = TextEditingController(text: '肯德基');
  final _cityController = TextEditingController(text: '杭州');

  List<String> _inputTipList = [];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      resizeToAvoidBottomPadding: false,
      appBar: AppBar(title: Text('输入内容自动提示')),
      body: DecoratedColumn(
        padding: EdgeInsets.all(kSpaceBig),
        children: <Widget>[
          TextFormField(
            controller: _keywordController,
            decoration: InputDecoration(hintText: '输入关键字'),
          ),
          TextFormField(
            controller: _cityController,
            decoration: InputDecoration(hintText: '输入所在城市'),
          ),
          RaisedButton(
            onPressed: () async {
              final inputTipList = await AmapSearch.fetchInputTips(
                _keywordController.text,
                city: _cityController.text,
              );

              Observable.fromIterable(inputTipList)
                  .asyncMap((it) => it.toFutureString())
                  .toList()
                  .then((it) => setState(() => _inputTipList = it));
            },
            child: Text('搜索'),
          ),
          Expanded(child: ScrollableText(_inputTipList.join("\n"))),
        ],
      ),
    );
  }
}