安卓位置服务 - 从用户当前位置确定国家/地区

Question

我正在编写一个使用位置服务的Android应用程序。我想确定用户所在的国家/地区的区域。我怎样才能做到这一点？

Answer 1

你可以做一个使用谷歌地理编码API的

http://code.google.com/apis/maps/documentation/geocoding/

所有你需要做的是让合适的查询，例如，在请求谷歌地理编码的经度和纬度提供用户的位置格式（在url中），然后解析JSON/XML响应。你可以看到，在提供有例子是JSON字符串，表示该国：

{ 
    "status": "OK", 
    "results": [ { 
    "types": [ "street_address" ], 
    "formatted_address": "1600 Amphitheatre Pkwy, Mountain View, CA 94043, USA", 
    "address_components": [ { 
     "long_name": "1600", 
     "short_name": "1600", 
     "types": [ "street_number" ] 
    }, { 
     "long_name": "Amphitheatre Pkwy", 
     "short_name": "Amphitheatre Pkwy", 
     "types": [ "route" ] 
    }, { 
     "long_name": "Mountain View", 
     "short_name": "Mountain View", 
     "types": [ "locality", "political" ] 
    }, { 
     "long_name": "California", 
     "short_name": "CA", 
     "types": [ "administrative_area_level_1", "political" ] 
    }, { 
     "long_name": "United States", // <----- HERE IS THE COUNTRY NAME. 
     "short_name": "US", 
     "types": [ "country", "political" ] 
    }, { 
     "long_name": "94043", 
     "short_name": "94043", 
     "types": [ "postal_code" ] 
    } ], 
    "geometry": { 
     "location": { 
     "lat": 37.4219720, 
     "lng": -122.0841430 
     }, 
     "location_type": "ROOFTOP", 
     "viewport": { 
     "southwest": { 
      "lat": 37.4188244, 
      "lng": -122.0872906 
     }, 
     "northeast": { 
      "lat": 37.4251196, 
      "lng": -122.0809954 
     } 
     } 
    } 
    } ] 
} 

如果我是链接不清或短，你可以阅读更多。或者使用Google地图API中的Geocoder类for android