android位置服务 - 根据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。我怎样才能做到这一点？

Answer 1

您可以使用 Google Geocoder API

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

您需要做的就是进行适当的查询，例如在向 Google Geocoder 的请求中以纬度和经度格式(在 url 中)提供用户的位置，然后解析 JSON/XML 响应。您可以看到在提供的示例中有表示国家/地区的 JSON 字符串:

{
  "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
        }
      }
    }
  } ]
}

如果我不清楚或缺少链接，您可以阅读更多内容。或者使用 Google Maps API for android 中的 Geocoder 类