searchDistrict method

Future<District> searchDistrict (String district)

获取行政区划数据

Implementation

static Future<District> searchDistrict(String district) async {
  // 会在listener中关闭
  // ignore: close_sinks
  final _controller = StreamController<District>(sync: true);

  platform(
    android: (pool) async {
      // 创建请求对象
      final query = await ObjectFactory_Android
          .createcom_amap_api_services_district_DistrictSearchQuery__();
      await query.setKeywords(district);

      // 获取android上下文
      final context = await ObjectFactory_Android.getandroid_app_Activity();

      // 创建搜索对象
      _androidDistrictSearch = await ObjectFactory_Android
          .createcom_amap_api_services_district_DistrictSearch__android_content_Context(
              context);

      // 设置请求
      await _androidDistrictSearch.setQuery(query);

      // 设置回调
      await _androidDistrictSearch
          .setOnDistrictSearchListener(_AndroidSearchListener(_controller));

      // 开始搜索
      await _androidDistrictSearch.searchDistrictAsyn();

      // 局部变量从HEAP中解除引用
      pool..add(query);
    },
    ios: (pool) async {
      _iosSearch = await ObjectFactory_iOS.createAMapSearchAPI();

      // 设置回调
      await _iosSearch.set_delegate(_IOSSearchListener(_controller));

      // 创建搜索请求
      final request =
          await ObjectFactory_iOS.createAMapDistrictSearchRequest();
      // 设置站点名称
      await request.set_keywords(district);

      // 开始搜索
      await _iosSearch.AMapDistrictSearch(request);

      // 局部变量从HEAP中解除引用
      pool..add(request);
    },
  );
  return _controller.stream.first;
}