Android build a jsonarray of jsonobjects

Question

I'd like to build a json object which contains, among others, an array of objects like this:

{"ChoisiEvents":[{"Id_evt":25},{"Id_evt":4}],"parasite":3}

I have written some code like :

JSONArray JAChoisiEvents = new JSONArray();
JSONObject objEvent = new JSONObject();
try{
    if (cbxTemp.isChecked()){
          objEvent.put("Id_evt", 25);
          JAChoisiEvents.put(objEvent);
    }
    if (cbxAutreRaison.isChecked()) {
          objEvent.put("Id_evt", 4);
          JAChoisiEvents.put(objEvent);
    }
} catch (JSONException e) {
     e.printStackTrace();
}
//...
 JSONObject obj = new JSONObject();
 try {
   obj.put("parasite", iParasite); 
   System.out.println("ChoisiEvents : " + JAChoisiEvents.toString());
   obj.put("ChoisiEvents", JAChoisiEvents); //
  } catch (JSONException e) {
      e.printStackTrace();
  }

I got the following result:

{"ChoisiEvents":[{"Id_evt":4},{"Id_evt":4}],"parasite":3}

As you can see, the last item in my array is repeated each time !

Adding "Id_evt", 25 in JSONArray and getting {"Id_evt":6} in result ? — ρяσѕρєя K
– ρяσѕρєя K, Commented Mar 16, 2016 at 14:50

Pragnani Kinnera · Accepted Answer · 2016-03-16 14:58:20Z

1

You are using the same JSONObject, thats why value is overriding,

try to instantiate for the second time

objEvent = new JSONObject();

After adding to the first value.

Like this

JSONObject objEvent;

    if (cbxTemp.isChecked()){
         objEvent = new JSONObject();
          objEvent.put("Id_evt", 25);
          JAChoisiEvents.put(objEvent);
    }
    if (cbxAutreRaison.isChecked()) {
         objEvent = new JSONObject();
          objEvent.put("Id_evt", 4);
          JAChoisiEvents.put(objEvent);
    }

answered Mar 16, 2016 at 14:58

Pragnani Kinnera

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1 Comment

Marc Over a year ago

Great, You've got the solution ! Thanks

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