#android #json
#Android #json
Вопрос:
У меня есть ответ от веб-службы Google, подобный следующему
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},
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"html_attributions" : [
"u003ca href="https://plus.google.com/115115924044576716973"u003eMatt Goodu003c/au003e"
],
"photo_reference" : "CnRtAAAAYab-XNz1Tm-iiB1qfxZJiC-T--LI7Mr5haR62p-RlGTrAIAPk2lhWogWOTQcFjPIHCiM2aYN2Iu-qkqPVGsEGony955zdEo6T3oOUKgNvT5WZvw6w_WU3aNdyLNh0xh-wRi4TNi6T70jutWPs6qkrRIQbdKBlQ6Yk1ROLxYnfSYF0BoUn9chrbaMj73dJleIqEzjxmi-9nY",
"width" : 816
}
],
"place_id" : "ChIJt7FX9rJqkFQR-R2iORwxyXQ",
"reference" : "CnRvAAAA8b_D2XlfYEVl6Oi5uYGRdJILg6dW3oRrLu8Q9xd9EukH2omaTGNlupKgahjJREN5jiNKdj9FSmpR4F0Du2XMbW9xmMEpO6CmPEG8zbBHQVNBs2zHzU2_m0WFnLv21mdxfAd20GVX6f6cdZ2COkb_KhIQhh6kZ-vny430yF0EvmH7eBoUZ3TVjq_RHxXlY_jpaN1qk2Yc3UM",
"scope" : "GOOGLE",
"types" : [
"convenience_store",
"grocery_or_supermarket",
"food",
"store",
"establishment"
],
"vicinity" : "1506 Pike Pl #509, Seattle"
},
{
"geometry" : {
"location" : {
"lat" : 47.608918,
"lng" : -122.340729
}
},
"icon" : "http://maps.gstatic.com/mapfiles/place_api/icons/generic_business-71.png",
"id" : "301d23a6579067833036e39ef46357e1d8e5ba68",
"name" : "Frank's Quality Produce",
"place_id" : "ChIJpdHb8LJqkFQRo8X7RoXoz2U",
"reference" : "CoQBeQAAAKEBHFRM9OPUb4CWC5bC1HYamXOFc0lzWyWCX-4eyhtOOIEvcxHIsj4y1xkBiXTIsttPetJYNr5KKux3Y3q5ZF7SKutTqiRYbk0hESohet1_EdcnPU31_IBRLo9W-T_7wiDb3FnN24rYmz9J9Kz7pxhlyKyR2VLMuTLMALNLJC2YEhChDDy463zp0HRiZaAsFSG3GhTe1n0deejJDnxNB2AK4zOf1HGkMw",
"scope" : "GOOGLE",
"types" : [ "grocery_or_supermarket", "food", "store", "establishment" ],
"vicinity" : "1508 Pike Pl, Seattle"
},
{
"geometry" : {
"location" : {
"lat" : 47.609231,
"lng" : -122.340848
}
},
"icon" : "http://maps.gstatic.com/mapfiles/place_api/icons/generic_business-71.png",
"id" : "228c792a04f0d9c3b8086b9f857521945f87c975",
"name" : "Choice Produce",
"place_id" : "ChIJmbBY97JqkFQR4JkuKXVDT3A",
"reference" : "CnRwAAAAWE1aK6eOe-rdRjgs2HJZHB__viCdWu2u7Qx0chME1CgDnnOycW_dcim98Szb2bzUjTy12wGk9fGO42jpywL-Zevm_ilfqi6q7jvRQxSGvsybbZau_Tc_orGj41Gz8fWK1R6_YvAT1n0II9DPFca1lxIQviRIxzWL3GRqyK3dun_4zRoUrNDpGHpGZHKUngGPiBLLH46zOqI",
"scope" : "GOOGLE",
"types" : [ "grocery_or_supermarket", "food", "store", "establishment" ],
"vicinity" : "1514 Pike Pl, Seattle"
}
],
"status" : "OK"
}
Мне нужно проанализировать его и получить значения lat и long
Я назначил его следующим образом
JSONArray JA=new JSONArray(result);
JSONObject json= null;
Где результат содержит ответ веб-службы. Как я могу проанализировать его и получить требуемые значения?
Комментарии:
1. Ответ представляет собой объект JSON, а не массив. Вот почему
new JSONArray(result)произойдет сбой.2. JSONArray JA=новый JSONArray(результат); JSONObject json= null; lat = новая строка[JA.length()]; longde = новая строка[JA.length()]; for(int i=0;i.getJSONObject(i); lat[i] = json.getString(«lat»); londe[i] = json.getString(«lng»); }
3. Хорошо, как это исправить и получить thse (lat, lng) в виде пар в массиве??
Ответ №1:
попробуйте этот код.вы получите значение lat и lng:
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
results = jsonObj.getJSONArray("result");
// looping through All Contacts
for (int i = 0; i < contacts.length(); i ) {
JSONObject c = contacts.getJSONObject(i);
JSONObject geo = c.getJSONObject("geomatrics");
JSONObject place = geo.getJSONObject("location");
String id = place.getString(lat);
String name = place.getString(lng);
}}}
Комментарии:
1. дайте мне знать, если вы получите ответ.
Ответ №2:
К вашему сведению, ответ JSON является объектом, а не массивом.
Шаги для получения значений lat / lng:
- Получить
resultsмассив JSON из полученного ответа объекта JSON - Выполните итерацию по всем вспомогательным объектам JSON, затем сначала получите
geometryвспомогательный объект. - Из подобъекта geometry получите объект location. Из объекта location выполните синтаксический анализ и получите значения lat / lng.
Пожалуйста, не запрашивайте код, поскольку в Интернете существует множество руководств по JSON, но вы можете использовать следующие методы для синтаксического анализа:
- getJSONObject()
- getString()
- getLong()
Комментарии:
1. вы можете написать это здесь?? Я новичок в этом приятеле.
2. @androidsuckzzz вы можете сослаться на сообщение в блоге, написанное мной в руководстве по синтаксическому анализу Android JSON .
3. код будет полным, дорогой друг, я новичок в этом
4. @androidsuckzzz мой дорогой код уже приведен в этом руководстве. Я не могу сдавать кровь напрямую, вам нужно что-то есть и переваривать!
Ответ №3:
В JSON есть несколько местоположений, поэтому вам понадобится и ArrayList сохранить их все.
Я рекомендую использовать ArrayList<HashMap<String,Double>>
Предполагая, что у вас есть результат в виде String объекта с именем result :
ArrayList<HashMap<String, Double>> list = new ArrayList<HashMap<String,Double>>();
JSONObject jsonObj= new JSONObject(result);
JSONArray results = jsonObj.getJSONArray("results");
for(int i=0;i<results.length();i ){
JSONObject temp = results.getJSONObject(i).getJSONObject("geometry").getJSONObject("location");
Double lat = temp.getDouble("lat");
Double lng = temp.getDouble("lng");
HashMap map = new HashMap<String, Double>();
map.put("lat",lat);
map.put("lng",lng);
list.add(map);
}
теперь вы можете восстановить любую позицию, используя
Double lat=list.get(4).get("lat");
Double lng=list.get(4).get("lng");
Надеюсь, это поможет. приветствия 🙂
Ответ №4:
Приведите ответ к JSONObject следующим образом
JSONObject jsonObj = new JSONObject(result);// where result is the response you got
Получите результирующий массив следующим образом
JSONArray results = jsonObj.getJSONArray("results"); // where results is the tag in resposne
Теперь у вас есть весь массив в результатах
для цикла всего материала
for(int i=0;i<results.length();i )
{
JSONObject location = results.getJSONObject(i).getJSONObject("geometry").getJSONObject("location");;
String lat = location.optString("lat");
String lng = location.optString("lng");
}
Если вам нужны lat и long внутри массива, добавьте их в массив.