how to find continent in particular location using Geocoder in android app

二次信任 提交于 2019-11-30 14:24:10

I don't think there is such information given by Google's API. The only solution I can think of is to have some kind of static data structure mapping country names to continent names (which you would presumably have to find yourself somehow, for instance by scraping this web page... ). Then you could text search the string that GeoCoder gives you and return the continent corresponding to the closest matching country name (which would be the key in your String mapping). (You would also have to treat the special case of US addresses which, annoyingly, end just with the state code)

As we have limited number of Continents, it's good to use static list of data.

We can use below json_str (found here) which have 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\"}";

And From Geocoder() we can get CountryCode like below:

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();
}
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