四维地图iOS Service SDK是一套基于iOS 8.0版本及以上操作系统的移动端产品开发工具包，开发者可以调用该SDK接口，轻松访问四维地图的服务和数据，快速构建功能丰富、交互性强的地图类应用程序。SDK提供了电车出行、路径规划、批量算路、路况事件等基本功能，满足不同用户各种应用需求。

功能介绍与体验

• 搜索建议

                      - (void)searchwithType:(NavinfoSearchCategory)type{
                          self.query = [[NavinfoPOIQuery alloc] initWithKeyword:@"如家" city:@"北京" lonlats:nil category:SERVICE_API_SEARCH_TEXT];];
                          self.query.exinfo = 2;
                          self.search = [[NavinfoPOISearch alloc] init];
                          self.search.delegate = self;
                          [self.search search:self.query];
                      }
                      - (void)POISearch:(NavinfoPOISearch *)poiSearch result:(NavinfoPOISearchResult *)result error:(NSError *)error{
                      }
                  

• 充电桩搜索

                      - (void)searchwithType:(NavinfoSearchCategory)type{
                          self.query = [[NavinfoPOIQuery alloc] initWithKeyword:@"加油站" city:@"北京" lonlats:nil category:SERVICE_API_EV_TEXT];];
                          self.query.exinfo = 2;
                          self.search = [[NavinfoPOISearch alloc] init];
                          self.search.delegate = self;
                          [self.search search:self.query];
                      }
                      - (void)POISearch:(NavinfoPOISearch *)poiSearch result:(NavinfoPOISearchResult *)result error:(NSError *)error{
                      }                   
                  

• 车辆行驶范围

                      - (void)reachAreaTest{
                          NavinfoLonlat * centerLonlat = [[NavinfoLonlat alloc]initWith:11637830 latitude:3989856 gbType:NavinfoGbTypeG02];
                          NavinfoEleCarAreaQuery * areaQuery = [[NavinfoEleCarAreaQuery alloc]initWithAreaCenter:centerLonlat soc:30];
                          NavinfoEleCarReachAreaSearch * areaSearch = [[NavinfoEleCarReachAreaSearch alloc]init];
                          [areaSearch startSearchWith:areaQuery];
                      }
                      - (void)onEleCarReachAreaSearch:(NavinfoEleCarReachAreaSearch * _Nonnull)routeSearch
                          response:(NavinfoEleCarReachAreaResult * _Nullable)response
                          error:(NSError * _Nullable)error{
                          NSLog(@"Error: %@", error);
                      }
                  

• 路况看板

                      - (void)trafficCityGraphic {
                          self.tgSearch = [[NavinfoTrafficGraphicSearch alloc] init];
                          self.tgSearch.delegate = self;
                          NavinfoTrafficCityGraphicQuery *query = [NavinfoTrafficCityGraphicQuery new];
                          query.cityName = @"大连";
                          [self.tgSearch cityGraphicSearch:query];
                      }
                      - (void)onTrafficCityGraphicSearch:(NavinfoTrafficGraphicSearch *)graphicSearch result:(NavinfoTrafficCityGraphicResult *)result error:(NSError *)error {
                          if (error) {
                              NSLog(@"----> error");
                          }
                      }