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app_car/amap_flutter_search.md
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# AMap Flutter Search - 高德地图搜索插件
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## 模块概述
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`amap_flutter_search` 是 OneApp 中基于高德地图 SDK 的搜索服务插件，提供了全面的地理信息搜索功能，包括 POI 搜索、路线规划、地址解析等服务。该插件为车辆导航、位置查找、路径规划等功能提供了强大的搜索能力支持。
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## 核心功能
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### 1. POI 搜索
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- **关键词搜索**：基于关键词的兴趣点搜索
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- **周边搜索**：指定位置周边的 POI 搜索
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- **分类搜索**：按类别筛选的 POI 搜索
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- **详情查询**：获取 POI 的详细信息
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### 2. 路线规划
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- **驾车路线**：多种驾车路径规划策略
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- **步行路线**：行人路径规划
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- **骑行路线**：骑行路径规划
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- **公交路线**：公共交通路径规划
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- **货车路线**：货车专用路径规划
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### 3. 地址解析
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- **地理编码**：地址转换为坐标
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- **逆地理编码**：坐标转换为地址
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- **输入提示**：地址输入智能提示
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- **行政区查询**：行政区域信息查询
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### 4. 距离计算
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- **直线距离**：两点间直线距离计算
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- **驾车距离**：实际驾车距离和时间
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- **步行距离**：步行距离和时间
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- **批量计算**：批量距离矩阵计算
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## 技术架构
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### 架构设计
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```
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┌─────────────────────────────────────┐
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│ 应用层 │
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│ (app_navigation, app_car) │
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├─────────────────────────────────────┤
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│ AMap Flutter Search │
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│ ┌──────────┬──────────┬──────────┐ │
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│ │ POI搜索 │ 路线规划 │ 地址解析 │ │
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│ ├──────────┼──────────┼──────────┤ │
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│ │ 距离计算 │ 缓存管理 │ 数据处理 │ │
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│ └──────────┴──────────┴──────────┘ │
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├─────────────────────────────────────┤
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│ 高德地图 Search SDK │
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│ ┌──────────┬──────────┬──────────┐ │
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│ │ Android │ iOS │ 搜索引擎 │ │
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│ └──────────┴──────────┴──────────┘ │
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├─────────────────────────────────────┤
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│ 网络服务层 │
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│ (REST API, WebService) │
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└─────────────────────────────────────┘
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```
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### 核心组件
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#### 1. POI 搜索管理器 (PoiSearchManager)
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```dart
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class AMapPoiSearchManager {
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// 关键词搜索
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Future<PoiResult> searchByKeyword(PoiKeywordSearchOption option);
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// 周边搜索
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Future<PoiResult> searchNearby(PoiNearbySearchOption option);
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// ID 搜索
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Future<PoiItem> searchById(String poiId);
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// 分类搜索
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Future<PoiResult> searchByCategory(PoiCategorySearchOption option);
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}
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```
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#### 2. 路线规划管理器 (RouteSearchManager)
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```dart
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class AMapRouteSearchManager {
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// 驾车路线规划
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Future<DriveRouteResult> calculateDriveRoute(DriveRouteQuery query);
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// 步行路线规划
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Future<WalkRouteResult> calculateWalkRoute(WalkRouteQuery query);
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// 骑行路线规划
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Future<RideRouteResult> calculateRideRoute(RideRouteQuery query);
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// 公交路线规划
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Future<BusRouteResult> calculateBusRoute(BusRouteQuery query);
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// 货车路线规划
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Future<TruckRouteResult> calculateTruckRoute(TruckRouteQuery query);
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}
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```
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#### 3. 地理编码管理器 (GeocodeManager)
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```dart
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class AMapGeocodeManager {
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// 地理编码
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Future<GeocodeResult> geocode(GeocodeQuery query);
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// 逆地理编码
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Future<RegeocodeResult> reverseGeocode(RegeocodeQuery query);
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// 输入提示
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Future<List<TipItem>> inputTips(InputTipsQuery query);
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// 行政区查询
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Future<DistrictResult> searchDistrict(DistrictQuery query);
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}
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```
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#### 4. 距离计算器 (DistanceCalculator)
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```dart
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class AMapDistanceCalculator {
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// 计算两点距离
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Future<DistanceResult> calculateDistance(DistanceQuery query);
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// 批量距离计算
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Future<List<DistanceResult>> calculateDistances(List<DistanceQuery> queries);
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// 路径距离计算
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Future<RouteDistanceResult> calculateRouteDistance(RouteDistanceQuery query);
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}
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```
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## 数据模型
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### POI 模型
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```dart
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class PoiItem {
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final String poiId; // POI ID
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final String title; // POI 名称
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final String snippet; // POI 描述
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final LatLng latLng; // POI 坐标
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final String distance; // 距离
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final String tel; // 电话
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final String postcode; // 邮编
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final String website; // 网站
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final String email; // 邮箱
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final String province; // 省份
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final String city; // 城市
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final String district; // 区县
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final String address; // 地址
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final String direction; // 方向
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final String businessArea; // 商圈
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final String typeCode; // 类型编码
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final String typeDes; // 类型描述
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final List<Photo> photos; // 照片列表
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final List<String> shopID; // 商铺ID
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final IndoorData indoorData; // 室内数据
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}
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class PoiResult {
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final List<PoiItem> pois;
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final int pageCount;
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final int totalCount;
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final SearchBound searchBound;
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final PoiQuery query;
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}
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```
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### 路线模型
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```dart
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class DriveRouteResult {
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final List<DrivePath> paths;
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final RouteQuery startPos;
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final RouteQuery targetPos;
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final List<RouteQuery> viaPoints;
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final int taxiCost;
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}
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class DrivePath {
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final String strategy; // 策略
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final int distance; // 距离（米）
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final int duration; // 时长（秒）
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final String tolls; // 过路费
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final String tollDistance; // 收费距离
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final String totalTrafficLights; // 红绿灯数
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final List<DriveStep> steps; // 路径段
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final List<TMC> tmcs; // 路况信息
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}
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class DriveStep {
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final String instruction; // 行驶指示
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final String orientation; // 方向
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final String road; // 道路名称
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final int distance; // 距离
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final int duration; // 时长
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final List<LatLng> polyline; // 路径坐标
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final String action; // 导航动作
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final String assistantAction; // 辅助动作
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}
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```
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### 地址模型
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```dart
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class RegeocodeResult {
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final RegeocodeAddress regeocodeAddress;
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final List<PoiItem> pois;
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final List<Road> roads;
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final List<RoadInter> roadInters;
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final List<AoiItem> aois;
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}
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class RegeocodeAddress {
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final String formattedAddress; // 格式化地址
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final String country; // 国家
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final String province; // 省份
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final String city; // 城市
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final String district; // 区县
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final String township; // 乡镇
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final String neighborhood; // 社区
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final String building; // 建筑
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final String adcode; // 区域编码
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final String citycode; // 城市编码
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final List<StreetNumber> streetNumbers; // 门牌信息
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}
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```
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## API 接口
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### POI 搜索接口
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```dart
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abstract class PoiSearchService {
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// 关键词搜索
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Future<ApiResponse<PoiResult>> searchByKeyword(PoiKeywordSearchRequest request);
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// 周边搜索
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Future<ApiResponse<PoiResult>> searchNearby(PoiNearbySearchRequest request);
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// 多边形搜索
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Future<ApiResponse<PoiResult>> searchInPolygon(PoiPolygonSearchRequest request);
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// POI 详情
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Future<ApiResponse<PoiItem>> getPoiDetail(String poiId);
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}
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```
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### 路线规划接口
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```dart
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abstract class RouteSearchService {
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// 驾车路线规划
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Future<ApiResponse<DriveRouteResult>> planDriveRoute(DriveRouteRequest request);
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// 步行路线规划
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Future<ApiResponse<WalkRouteResult>> planWalkRoute(WalkRouteRequest request);
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// 骑行路线规划
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Future<ApiResponse<RideRouteResult>> planRideRoute(RideRouteRequest request);
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// 公交路线规划
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Future<ApiResponse<BusRouteResult>> planBusRoute(BusRouteRequest request);
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}
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```
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### 地理编码接口
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```dart
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abstract class GeocodeService {
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// 地理编码
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Future<ApiResponse<GeocodeResult>> geocode(GeocodeRequest request);
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// 逆地理编码
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Future<ApiResponse<RegeocodeResult>> reverseGeocode(RegeocodeRequest request);
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// 输入提示
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Future<ApiResponse<List<TipItem>>> getInputTips(InputTipsRequest request);
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// 行政区搜索
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Future<ApiResponse<DistrictResult>> searchDistrict(DistrictRequest request);
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}
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```
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## 配置管理
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### 搜索配置
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```dart
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class SearchConfig {
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final String apiKey; // API 密钥
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final int timeoutMs; // 超时时间
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final int maxRetries; // 最大重试次数
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final bool enableCache; // 是否启用缓存
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final int cacheExpireTime; // 缓存过期时间
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final String language; // 语言设置
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final String region; // 区域设置
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static const SearchConfig defaultConfig = SearchConfig(
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apiKey: '',
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timeoutMs: 30000,
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maxRetries: 3,
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enableCache: true,
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cacheExpireTime: 3600,
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language: 'zh-CN',
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region: 'CN',
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);
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}
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```
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### POI 搜索配置
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```dart
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class PoiSearchConfig {
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final int pageSize; // 每页结果数
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final int maxPage; // 最大页数
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final String city; // 搜索城市
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final String types; // 搜索类型
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final bool extensions; // 是否返回扩展信息
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final String sortrule; // 排序规则
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static const PoiSearchConfig defaultConfig = PoiSearchConfig(
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pageSize: 20,
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maxPage: 100,
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city: '',
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types: '',
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extensions: false,
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sortrule: 'distance',
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);
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}
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```
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## 使用示例
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### POI 搜索示例
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```dart
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// 关键词搜索
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final searchOption = PoiKeywordSearchOption(
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keyword: '加油站',
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city: '北京',
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pageSize: 20,
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pageNum: 1,
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extensions: true,
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);
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final poiResult = await AMapPoiSearchManager.instance.searchByKeyword(searchOption);
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for (final poi in poiResult.pois) {
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print('POI 名称: ${poi.title}');
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print('POI 地址: ${poi.address}');
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print('POI 距离: ${poi.distance}');
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print('POI 坐标: ${poi.latLng.latitude}, ${poi.latLng.longitude}');
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}
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```
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### 周边搜索示例
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```dart
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// 周边搜索
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final nearbyOption = PoiNearbySearchOption(
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keyword: '餐厅',
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center: LatLng(39.9042, 116.4074), // 搜索中心点
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radius: 1000, // 搜索半径 1000 米
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pageSize: 10,
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pageNum: 1,
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);
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final nearbyResult = await AMapPoiSearchManager.instance.searchNearby(nearbyOption);
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print('附近餐厅数量: ${nearbyResult.pois.length}');
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for (final restaurant in nearbyResult.pois) {
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print('餐厅: ${restaurant.title} - ${restaurant.distance}');
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}
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```
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### 路线规划示例
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```dart
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// 驾车路线规划
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final driveQuery = DriveRouteQuery(
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fromPoint: RouteQuery(39.9042, 116.4074), // 起点
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toPoint: RouteQuery(39.9015, 116.3974), // 终点
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mode: DriveMode.fastest, // 最快路线
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avoidhighspeed: false, // 不避开高速
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avoidtolls: false, // 不避开收费
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avoidtrafficjam: true, // 避开拥堵
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);
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final driveResult = await AMapRouteSearchManager.instance.calculateDriveRoute(driveQuery);
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if (driveResult.paths.isNotEmpty) {
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final path = driveResult.paths.first;
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print('驾车距离: ${path.distance} 米');
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print('预计时间: ${path.duration} 秒');
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print('过路费: ${path.tolls} 元');
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for (final step in path.steps) {
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print('导航指示: ${step.instruction}');
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print('道路: ${step.road}');
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print('距离: ${step.distance} 米');
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}
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}
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```
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### 地理编码示例
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```dart
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// 地址转坐标
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final geocodeQuery = GeocodeQuery(
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locationName: '北京市朝阳区望京SOHO',
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city: '北京',
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);
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final geocodeResult = await AMapGeocodeManager.instance.geocode(geocodeQuery);
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if (geocodeResult.geocodeAddressList.isNotEmpty) {
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final address = geocodeResult.geocodeAddressList.first;
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print('地址坐标: ${address.latLonPoint.latitude}, ${address.latLonPoint.longitude}');
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}
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// 坐标转地址
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final regeocodeQuery = RegeocodeQuery(
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latLonPoint: LatLng(39.9915, 116.4684),
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radius: 200.0,
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extensions: 'all',
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);
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final regeocodeResult = await AMapGeocodeManager.instance.reverseGeocode(regeocodeQuery);
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print('格式化地址: ${regeocodeResult.regeocodeAddress.formattedAddress}');
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```
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### 输入提示示例
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```dart
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// 地址输入提示
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final tipsQuery = InputTipsQuery(
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keyword: '王府井',
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city: '北京',
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datatype: 'all',
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);
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final tipsList = await AMapGeocodeManager.instance.inputTips(tipsQuery);
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for (final tip in tipsList) {
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print('提示: ${tip.name}');
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print('地址: ${tip.address}');
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if (tip.point != null) {
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print('坐标: ${tip.point!.latitude}, ${tip.point!.longitude}');
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}
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}
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```
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## 测试策略
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### 单元测试
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```dart
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group('AMapSearch Tests', () {
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test('should search POI by keyword', () async {
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// Given
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final searchOption = PoiKeywordSearchOption(
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keyword: '测试POI',
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city: '北京',
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);
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||||
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||||
// When
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final result = await AMapPoiSearchManager.instance.searchByKeyword(searchOption);
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// Then
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expect(result.pois, isNotEmpty);
|
||||
expect(result.pois.first.title, contains('测试POI'));
|
||||
});
|
||||
|
||||
test('should calculate drive route', () async {
|
||||
// Given
|
||||
final query = DriveRouteQuery(
|
||||
fromPoint: RouteQuery(39.9042, 116.4074),
|
||||
toPoint: RouteQuery(39.9015, 116.3974),
|
||||
);
|
||||
|
||||
// When
|
||||
final result = await AMapRouteSearchManager.instance.calculateDriveRoute(query);
|
||||
|
||||
// Then
|
||||
expect(result.paths, isNotEmpty);
|
||||
expect(result.paths.first.distance, greaterThan(0));
|
||||
});
|
||||
});
|
||||
```
|
||||
|
||||
### 集成测试
|
||||
```dart
|
||||
group('Search Integration Tests', () {
|
||||
testWidgets('complete search flow', (tester) async {
|
||||
// 1. 搜索 POI
|
||||
final pois = await searchNearbyPois('加油站', currentLocation);
|
||||
|
||||
// 2. 选择目标 POI
|
||||
final targetPoi = pois.first;
|
||||
|
||||
// 3. 规划路线
|
||||
final route = await planRouteToDestination(currentLocation, targetPoi.latLng);
|
||||
|
||||
// 4. 验证结果
|
||||
expect(route.paths, isNotEmpty);
|
||||
expect(route.paths.first.steps, isNotEmpty);
|
||||
});
|
||||
});
|
||||
```
|
||||
|
||||
## 性能优化
|
||||
|
||||
### 搜索优化
|
||||
- **搜索缓存**：缓存常用搜索结果
|
||||
- **预测搜索**：基于历史预测用户搜索
|
||||
- **分页加载**：大结果集分页加载
|
||||
- **搜索建议**：智能搜索建议减少请求
|
||||
|
||||
### 路线优化
|
||||
- **路线缓存**：缓存常用路线规划结果
|
||||
- **增量更新**：只更新路线变化部分
|
||||
- **压缩传输**：压缩路线数据减少传输量
|
||||
- **多线程处理**：并行处理多个路线请求
|
||||
|
||||
## 错误处理
|
||||
|
||||
### 搜索错误类型
|
||||
```dart
|
||||
enum SearchErrorType {
|
||||
networkError, // 网络错误
|
||||
apiKeyInvalid, // API Key 无效
|
||||
quotaExceeded, // 配额超限
|
||||
invalidParameter, // 参数无效
|
||||
noResult, // 无搜索结果
|
||||
serverError, // 服务器错误
|
||||
timeout // 请求超时
|
||||
}
|
||||
|
||||
class SearchException implements Exception {
|
||||
final SearchErrorType type;
|
||||
final String message;
|
||||
final int? errorCode;
|
||||
|
||||
const SearchException(this.type, this.message, [this.errorCode]);
|
||||
}
|
||||
```
|
||||
|
||||
### 错误处理示例
|
||||
```dart
|
||||
try {
|
||||
final result = await AMapPoiSearchManager.instance.searchByKeyword(searchOption);
|
||||
// 处理搜索结果
|
||||
} on SearchException catch (e) {
|
||||
switch (e.type) {
|
||||
case SearchErrorType.networkError:
|
||||
showErrorDialog('网络连接失败，请检查网络设置');
|
||||
break;
|
||||
case SearchErrorType.noResult:
|
||||
showInfoDialog('未找到相关结果，请尝试其他关键词');
|
||||
break;
|
||||
case SearchErrorType.quotaExceeded:
|
||||
showErrorDialog('搜索次数已达上限，请稍后再试');
|
||||
break;
|
||||
default:
|
||||
showErrorDialog('搜索失败: ${e.message}');
|
||||
}
|
||||
} catch (e) {
|
||||
showErrorDialog('未知错误: $e');
|
||||
}
|
||||
```
|
||||
|
||||
## 缓存策略
|
||||
|
||||
### 搜索结果缓存
|
||||
```dart
|
||||
class SearchCache {
|
||||
static const int maxCacheSize = 1000;
|
||||
static const Duration cacheExpiration = Duration(hours: 1);
|
||||
|
||||
// 缓存 POI 搜索结果
|
||||
static Future<void> cachePoiResult(String key, PoiResult result);
|
||||
|
||||
// 获取缓存的 POI 结果
|
||||
static Future<PoiResult?> getCachedPoiResult(String key);
|
||||
|
||||
// 缓存路线规划结果
|
||||
static Future<void> cacheRouteResult(String key, DriveRouteResult result);
|
||||
|
||||
// 获取缓存的路线结果
|
||||
static Future<DriveRouteResult?> getCachedRouteResult(String key);
|
||||
|
||||
// 清理过期缓存
|
||||
static Future<void> cleanExpiredCache();
|
||||
}
|
||||
```
|
||||
|
||||
## 配额管理
|
||||
|
||||
### API 配额监控
|
||||
```dart
|
||||
class QuotaManager {
|
||||
// 获取当前配额使用情况
|
||||
static Future<QuotaInfo> getCurrentQuota();
|
||||
|
||||
// 检查是否可以发起请求
|
||||
static Future<bool> canMakeRequest(RequestType type);
|
||||
|
||||
// 记录请求使用
|
||||
static Future<void> recordRequest(RequestType type);
|
||||
|
||||
// 获取配额重置时间
|
||||
static Future<DateTime> getQuotaResetTime();
|
||||
}
|
||||
|
||||
class QuotaInfo {
|
||||
final int dailyLimit; // 日限额
|
||||
final int dailyUsed; // 日使用量
|
||||
final int monthlyLimit; // 月限额
|
||||
final int monthlyUsed; // 月使用量
|
||||
final DateTime resetTime; // 重置时间
|
||||
}
|
||||
```
|
||||
|
||||
## 版本历史
|
||||
|
||||
### v3.1.22+1 (当前版本)
|
||||
- 支持最新的高德地图 API
|
||||
- 新增货车路线规划功能
|
||||
- 优化搜索性能和准确性
|
||||
- 修复路线规划稳定性问题
|
||||
|
||||
### v3.1.21
|
||||
- 支持室内 POI 搜索
|
||||
- 新增批量距离计算
|
||||
- 优化内存使用
|
||||
- 改进错误处理机制
|
||||
|
||||
## 依赖关系
|
||||
|
||||
### 内部依赖
|
||||
- `amap_flutter_base`: 高德地图基础库
|
||||
- `basic_network`: 网络请求服务
|
||||
- `basic_storage`: 本地存储服务
|
||||
|
||||
### 外部依赖
|
||||
- `dio`: HTTP 客户端
|
||||
- `cached_network_image`: 图片缓存
|
||||
- `sqflite`: 本地数据库
|
||||
|
||||
## 总结
|
||||
|
||||
`amap_flutter_search` 作为高德地图搜索服务的 Flutter 插件，为 OneApp 提供了全面的地理信息搜索能力。通过集成 POI 搜索、路线规划、地理编码、距离计算等功能，该插件能够满足车辆导航、位置服务、路径规划等多种业务需求。
|
||||
|
||||
插件在设计上充分考虑了性能优化、缓存管理、错误处理、配额控制等关键因素，确保在提供高质量搜索服务的同时，保持良好的用户体验和系统稳定性。这为 OneApp 的车联网和导航服务提供了强大的技术支撑。
|
||||
Reference in New Issue
Block a user