Android - créer un tableau JSON et un objet JSON
Comment puis-je créer un JSON avec ce format sous Android: Puisque l'API que je vais transmettre analysera JsonArray, alors l'objet. Ou est-ce que ça irait si juste passer un objet json? Puisque je vais juste devoir insérer 1 transaction par appel de service.
{
"student": [
{
"id": 1,
"name": "John Doe",
"year": "1st",
"curriculum": "Arts",
"birthday": 3/3/1995
},
{
"id": 2,
"name": "Michael West",
"year": "2nd",
"curriculum": "Economic",
"birthday": 4/4/1994
}
]
}
Ce que je sais, c'est seulement JSONObject. Comme celui-ci.
JSONObject obj = new JSONObject();
try {
obj.put("id", "3");
obj.put("name", "NAME OF STUDENT");
obj.put("year", "3rd");
obj.put("curriculum", "Arts");
obj.put("birthday", "5/5/1993");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Des idées. Merci
Utilisez le code suivant:
JSONObject student1 = new JSONObject();
try {
student1.put("id", "3");
student1.put("name", "NAME OF STUDENT");
student1.put("year", "3rd");
student1.put("curriculum", "Arts");
student1.put("birthday", "5/5/1993");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JSONObject student2 = new JSONObject();
try {
student2.put("id", "2");
student2.put("name", "NAME OF STUDENT2");
student2.put("year", "4rd");
student2.put("curriculum", "scicence");
student2.put("birthday", "5/5/1993");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JSONArray jsonArray = new JSONArray();
jsonArray.put(student1);
jsonArray.put(student2);
JSONObject studentsObj = new JSONObject();
studentsObj.put("Students", jsonArray);
String jsonStr = studentsObj.toString();
System.out.println("jsonString: "+jsonStr);
public JSONObject makJsonObject(int id[], String name[], String year[],
String curriculum[], String birthday[], int numberof_students)
throws JSONException {
JSONObject obj = null;
JSONArray jsonArray = new JSONArray();
for (int i = 0; i < numberof_students; i++) {
obj = new JSONObject();
try {
obj.put("id", id[i]);
obj.put("name", name[i]);
obj.put("year", year[i]);
obj.put("curriculum", curriculum[i]);
obj.put("birthday", birthday[i]);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
jsonArray.put(obj);
}
JSONObject finalobject = new JSONObject();
finalobject.put("student", jsonArray);
return finalobject;
}
JSONObject obj = new JSONObject();
try {
obj.put("id", "3");
obj.put("name", "NAME OF STUDENT");
obj.put("year", "3rd");
obj.put("curriculum", "Arts");
obj.put("birthday", "5/5/1993");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JSONArray js=new JSONArray(obj.toString());
JSONObject obj2 = new JSONObject();
obj2.put("student", js.toString());
Vous pouvez créer une méthode, lui transmettre des paramètres et obtenir le json comme réponse.
private JSONObject jsonResult(String Name,int id, String curriculum) throws JSONException {
JSONObject json = null;
json = new JSONObject("{\"" + "Name" + "\":" + "\"" + Name+ "\""
+ "," + "\"" + "Id" + "\":" + id + "," + "\"" + "Curriculum"
+ "\":" + "\"" + curriculum+ "\"" + "}");
return json;
}
J'espère que cela t'aidera.
Voici une version plus simple (mais pas si courte) qui ne nécessite pas try-catch:
Map<String, String> data = new HashMap<>();
data.put("user", "[email protected]");
data.put("pass", "123");
JSONObject jsonData = new JSONObject(data);
Si vous souhaitez ajouter un jsonObject dans un champ, vous pouvez procéder comme suit:
data.put("socialMedia", (new JSONObject()).put("facebookId", "1174989895893400"));
data.put("socialMedia", (new JSONObject()).put("googleId", "106585039098745627377"));
Malheureusement, il faut un try-catch à cause de la méthode put ().
SI vous voulez éviter à nouveau try-catch (pas très recommandé, mais c'est correct si vous pouvez garantir des chaînes json bien formées), vous pouvez le faire de la manière suivante:
data.put("socialMedia", "{ 'facebookId': '1174989895893400' }");
Vous pouvez faire la même chose avec JsonArrays et ainsi de suite.
À votre santé.
J'ai eu du mal avec ça jusqu'à ce que j'ai trouvé la réponse:
Utiliser la bibliothèque GSON:
Gson gson = Gson(); String str_json = gson.tojson(jsonArray);`Passez le tableau json. Ce sera automatiquement stringfied. Cette option a parfaitement fonctionné pour moi.
JSONObject jsonResult = new JSONObject();
try {
jsonResult.put("clave", "valor");
jsonResult.put("username", "iesous");
jsonResult.put("password", "1234");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.d("DEV","jsonResult->"+jsonResult);
httpClient.post("your api", params, new JsonHttpResponseHandler() {
@Override
public void onStart() {
dialog.show();
}
@Override
public void onSuccess(int statusCode, Header[] headers, JSONObject response) {
try {
JSONArray jsonArray=response.getJSONArray("data");
for (int i = 0; i <jsonArray.length() ; i++) {
blootypelist1.add(jsonArray.getJSONObject(i).getString("email"));
}
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(context, Android.R.layout.simple_list_item_activated_1, blootypelist1);
// Drop down layout style - list view with radio button
// attaching data adapter to spinner
listView.setAdapter(dataAdapter);
} catch (JSONException e) {
blootypelist1.clear();
Toast.makeText(context, "No search user avelible", Toast.LENGTH_SHORT).show();
}
}
Map<String, String> params = new HashMap<String, String>();
//** Temp array
List<String[]> tmpArray = new ArrayList<>();
tmpArray.add(new String[]{"b001","book1"});
tmpArray.add(new String[]{"b002","book2"});
//** Json Array Example
JSONArray jrrM = new JSONArray();
for(int i=0; i<tmpArray.size(); i++){
JSONArray jrr = new JSONArray();
jrr.put(tmpArray.get(i)[0]);
jrr.put(tmpArray.get(i)[1]);
jrrM.put(jrr);
}
//Json Object Example
JSONObject jsonObj = new JSONObject();
try {
jsonObj.put("plno","000000001");
jsonObj.put("rows", jrrM);
}catch (JSONException ex){
ex.printStackTrace();
}
// Bundles them
params.put("user", "guest");
params.put("tb", "book_store");
params.put("action","save");
params.put("data", jsonObj.toString());
// Now you can send them to the server.
public void DataSendReg(String picPath, final String ed2, String ed4, int bty1, String bdatee, String ed1, String cno, String address , String select_item, String select_item1, String height, String weight) {
final ProgressDialog dialog=new ProgressDialog(SignInAct.this);
dialog.setMessage("Process....");
AsyncHttpClient httpClient=new AsyncHttpClient();
RequestParams params=new RequestParams();
File pic = new File(picPath);
try {
params.put("image",pic);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
params.put("height",height);
params.put("weight",weight);
params.put("pincode",select_item1);
params.put("area",select_item);
params.put("address",address);
params.put("contactno",cno);
params.put("username",ed1);
params.put("email",ed2);
params.put("pass",ed4);
params.put("bid",bty1);
params.put("birthdate",bdatee);
params.put("city","Surat");
params.put("state","Gujarat");
httpClient.post(WebAPI.REGAPI,params,new JsonHttpResponseHandler(){
@Override
public void onStart() {
dialog.show();
}
@Override
public void onSuccess(int statusCode, Header[] headers, JSONObject response) {
try {
String done=response.get("msg").toString();
if(done.equals("s")) {
Toast.makeText(SignInAct.this, "Registration Success Fully", Toast.LENGTH_SHORT).show();
DataPrefrenceMaster.SetRing(ed2);
startActivity(new Intent(SignInAct.this, LoginAct.class));
finish();
}
else if(done.equals("ex")) {
Toast.makeText(SignInAct.this, "email already exist", Toast.LENGTH_SHORT).show();
}else Toast.makeText(SignInAct.this, "Registration failed", Toast.LENGTH_SHORT).show();
} catch (JSONException e) {
Toast.makeText(SignInAct.this, "e :: ="+e.getMessage(), Toast.LENGTH_SHORT).show();
}
}
@Override
public void onFailure(int statusCode, Header[] headers, Throwable throwable, JSONObject errorResponse) {
Toast.makeText(SignInAct.this, "Server not Responce", Toast.LENGTH_SHORT).show();
Log.d("jkl","error");
}
@Override
public void onFinish() {
dialog.dismiss();
}
});
}