如何在Android应用程序中使用Geocoder在特定位置找到大陆

Question

   i am developing android application using Geocoder services,
   I have an application where I try to get address of a location based on 
   the  latitude,longitude coordinates its working fine.  
   my problem is how to get continent of particular address.

例如：double lat = 17; double lon = 78.49;

List addresses = new Geocoder（Shout.this，Locale.getDefault（））。getFromLocation（lat，lon，1）;

我使用此代码输出的是印度，海德拉巴这个地址相关如何查找大陆，请帮我一些有价值的解决方案。

我正在使用地理编码器动态获取国家名称是他们有机会获得大陆名称以及country.it很难静态维护我需要动态任何免费服务找到基于大陆的服务

提前致谢

Answer 1

我不认为Google的API会提供此类信息。我能想到的唯一解决方案是使用某种静态数据结构将国家/地区名称映射到大陆名称（您可能必须以某种方式找到自己，例如通过抓取this网页...）。然后，您可以文本搜索GeoCoder为您提供的字符串，并返回与最接近的匹配国家/地区名称相对应的大陆（这将是您的字符串映射中的关键字）。 （您还必须处理美国地址的特殊情况，令人讨厌的是，仅以州代码结束）

Answer 2

由于我们的Continents数量有限，因此最好使用静态数据列表。

我们可以使用下面json_str（找到here）有CountryCode & Continent

String json_str = "{\"AD\":\"Europe\",\"AE\":\"Asia\",\"AF\":\"Asia\",\"AG\":\"North America\",\"AI\":\"North America\",\"AL\":\"Europe\",\"AM\":\"Asia\",\"AN\":\"North America\",\"AO\":\"Africa\",\"AQ\":\"Antarctica\",\"AR\":\"South America\",\"AS\":\"Australia\",\"AT\":\"Europe\",\"AU\":\"Australia\",\"AW\":\"North America\",\"AZ\":\"Asia\",\"BA\":\"Europe\",\"BB\":\"North America\",\"BD\":\"Asia\",\"BE\":\"Europe\",\"BF\":\"Africa\",\"BG\":\"Europe\",\"BH\":\"Asia\",\"BI\":\"Africa\",\"BJ\":\"Africa\",\"BM\":\"North America\",\"BN\":\"Asia\",\"BO\":\"South America\",\"BR\":\"South America\",\"BS\":\"North America\",\"BT\":\"Asia\",\"BW\":\"Africa\",\"BY\":\"Europe\",\"BZ\":\"North America\",\"CA\":\"North America\",\"CC\":\"Asia\",\"CD\":\"Africa\",\"CF\":\"Africa\",\"CG\":\"Africa\",\"CH\":\"Europe\",\"CI\":\"Africa\",\"CK\":\"Australia\",\"CL\":\"South America\",\"CM\":\"Africa\",\"CN\":\"Asia\",\"CO\":\"South America\",\"CR\":\"North America\",\"CU\":\"North America\",\"CV\":\"Africa\",\"CX\":\"Asia\",\"CY\":\"Asia\",\"CZ\":\"Europe\",\"DE\":\"Europe\",\"DJ\":\"Africa\",\"DK\":\"Europe\",\"DM\":\"North America\",\"DO\":\"North America\",\"DZ\":\"Africa\",\"EC\":\"South America\",\"EE\":\"Europe\",\"EG\":\"Africa\",\"EH\":\"Africa\",\"ER\":\"Africa\",\"ES\":\"Europe\",\"ET\":\"Africa\",\"FI\":\"Europe\",\"FJ\":\"Australia\",\"FK\":\"South America\",\"FM\":\"Australia\",\"FO\":\"Europe\",\"FR\":\"Europe\",\"GA\":\"Africa\",\"GB\":\"Europe\",\"GD\":\"North America\",\"GE\":\"Asia\",\"GF\":\"South America\",\"GG\":\"Europe\",\"GH\":\"Africa\",\"GI\":\"Europe\",\"GL\":\"North America\",\"GM\":\"Africa\",\"GN\":\"Africa\",\"GP\":\"North America\",\"GQ\":\"Africa\",\"GR\":\"Europe\",\"GS\":\"Antarctica\",\"GT\":\"North America\",\"GU\":\"Australia\",\"GW\":\"Africa\",\"GY\":\"South America\",\"HK\":\"Asia\",\"HN\":\"North America\",\"HR\":\"Europe\",\"HT\":\"North America\",\"HU\":\"Europe\",\"ID\":\"Asia\",\"IE\":\"Europe\",\"IL\":\"Asia\",\"IM\":\"Europe\",\"IN\":\"Asia\",\"IO\":\"Asia\",\"IQ\":\"Asia\",\"IR\":\"Asia\",\"IS\":\"Europe\",\"IT\":\"Europe\",\"JE\":\"Europe\",\"JM\":\"North America\",\"JO\":\"Asia\",\"JP\":\"Asia\",\"KE\":\"Africa\",\"KG\":\"Asia\",\"KH\":\"Asia\",\"KI\":\"Australia\",\"KM\":\"Africa\",\"KN\":\"North America\",\"KP\":\"Asia\",\"KR\":\"Asia\",\"KW\":\"Asia\",\"KY\":\"North America\",\"KZ\":\"Asia\",\"LA\":\"Asia\",\"LB\":\"Asia\",\"LC\":\"North America\",\"LI\":\"Europe\",\"LK\":\"Asia\",\"LR\":\"Africa\",\"LS\":\"Africa\",\"LT\":\"Europe\",\"LU\":\"Europe\",\"LV\":\"Europe\",\"LY\":\"Africa\",\"MA\":\"Africa\",\"MC\":\"Europe\",\"MD\":\"Europe\",\"ME\":\"Europe\",\"MG\":\"Africa\",\"MH\":\"Australia\",\"MK\":\"Europe\",\"ML\":\"Africa\",\"MM\":\"Asia\",\"MN\":\"Asia\",\"MO\":\"Asia\",\"MP\":\"Australia\",\"MQ\":\"North America\",\"MR\":\"Africa\",\"MS\":\"North America\",\"MT\":\"Europe\",\"MU\":\"Africa\",\"MV\":\"Asia\",\"MW\":\"Africa\",\"MX\":\"North America\",\"MY\":\"Asia\",\"MZ\":\"Africa\",\"NA\":\"Africa\",\"NC\":\"Australia\",\"NE\":\"Africa\",\"NF\":\"Australia\",\"NG\":\"Africa\",\"NI\":\"North America\",\"NL\":\"Europe\",\"NO\":\"Europe\",\"NP\":\"Asia\",\"NR\":\"Australia\",\"NU\":\"Australia\",\"NZ\":\"Australia\",\"OM\":\"Asia\",\"PA\":\"North America\",\"PE\":\"South America\",\"PF\":\"Australia\",\"PG\":\"Australia\",\"PH\":\"Asia\",\"PK\":\"Asia\",\"PL\":\"Europe\",\"PM\":\"North America\",\"PN\":\"Australia\",\"PR\":\"North America\",\"PS\":\"Asia\",\"PT\":\"Europe\",\"PW\":\"Australia\",\"PY\":\"South America\",\"QA\":\"Asia\",\"RE\":\"Africa\",\"RO\":\"Europe\",\"RS\":\"Europe\",\"RU\":\"Europe\",\"RW\":\"Africa\",\"SA\":\"Asia\",\"SB\":\"Australia\",\"SC\":\"Africa\",\"SD\":\"Africa\",\"SE\":\"Europe\",\"SG\":\"Asia\",\"SH\":\"Africa\",\"SI\":\"Europe\",\"SJ\":\"Europe\",\"SK\":\"Europe\",\"SL\":\"Africa\",\"SM\":\"Europe\",\"SN\":\"Africa\",\"SO\":\"Africa\",\"SR\":\"South America\",\"ST\":\"Africa\",\"SV\":\"North America\",\"SY\":\"Asia\",\"SZ\":\"Africa\",\"TC\":\"North America\",\"TD\":\"Africa\",\"TF\":\"Antarctica\",\"TG\":\"Africa\",\"TH\":\"Asia\",\"TJ\":\"Asia\",\"TK\":\"Australia\",\"TM\":\"Asia\",\"TN\":\"Africa\",\"TO\":\"Australia\",\"TR\":\"Asia\",\"TT\":\"North America\",\"TV\":\"Australia\",\"TW\":\"Asia\",\"TZ\":\"Africa\",\"UA\":\"Europe\",\"UG\":\"Africa\",\"US\":\"North America\",\"UY\":\"South America\",\"UZ\":\"Asia\",\"VC\":\"North America\",\"VE\":\"South America\",\"VG\":\"North America\",\"VI\":\"North America\",\"VN\":\"Asia\",\"VU\":\"Australia\",\"WF\":\"Australia\",\"WS\":\"Australia\",\"YE\":\"Asia\",\"YT\":\"Africa\",\"ZA\":\"Africa\",\"ZM\":\"Africa\",\"ZW\":\"Africa\"}";

从Geocoder()我们可以得到CountryCode如下：

try {

    JSONObject jsonObject = new JSONObject(json_str);


    Geocoder geocoder = new Geocoder(this, Locale.ENGLISH);

    List<Address> addresses = geocoder.getFromLocation(latitude, longitude, 1);

    if (addresses.size() > 0) {

        Address fetchedAddress = addresses.get(0);

        // getCountryCode from Address
        String countryCode = fetchedAddress.getCountryCode();

        // get continentName here
        String continentName = jsonObject.getString(countryCode);

    }

} catch (IOException e) {
    e.printStackTrace();
} catch (JSONException e) {
    e.printStackTrace();
}