searchGeocode method
地理编码(地址转坐标)
输入关键字keyword
, 并且限制所在城市city
Implementation
static Future<List<Geocode>> searchGeocode(
String keyword, {
String city = '',
}) async {
// 会在listener中关闭
// ignore: close_sinks
final _controller = StreamController<List<Geocode>>();
platform(
android: (pool) async {
// 创建查询对象
final query = await ObjectFactory_Android
.createcom_amap_api_services_geocoder_GeocodeQuery__String__String(
keyword, city);
// 获取android上下文
final context = await ObjectFactory_Android.getandroid_app_Activity();
// 创建搜索对象
_androidGeocodeSearch = await ObjectFactory_Android
.createcom_amap_api_services_geocoder_GeocodeSearch__android_content_Context(
context);
// 设置回调
await _androidGeocodeSearch
.setOnGeocodeSearchListener(_AndroidSearchListener(_controller));
// 开始搜索
await _androidGeocodeSearch.getFromLocationNameAsyn(query);
// 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.createAMapGeocodeSearchRequest();
// 设置关键字
await request.set_address(keyword);
// 设置城市
await request.set_city(city);
// 开始搜索
await _iosSearch.AMapGeocodeSearch(request);
// 局部变量从HEAP中解除引用
pool..add(request);
},
);
return _controller.stream.first;
}