Question

Ineed to post data in JSON format as shown below And the size of the array is not
constant. it depends on the user.

  {
  "info": [
    {
      "Name": "foo1",
      "Number": 123
    },
    {
      "Name": "foo2",
      "Number": 124
    },
    {
      "Name": "foo2",
      "Number": 125
    }
  ]
}

I tried to create in the following way

JSONObject parent = new JSONObject();
JSONArray jArray = new JSONArray();
JSONObject childObj = new JSONObject();


childObj.put("Name", etName.getText()).toString();
childObj.put("Number", etNumber.getText()).toString();

jArray.put(childObj);

parent.put("info",jArray);

but i’m unable to get it and I also tried in this way like example 6.1 but there is no method like add for JSONArray. So how can post my data. Please help me.
Thanks.

Answer 1

I’m not sure exactly what your question is but I’d typically do something like this to create the JSON string that you are looking for (the example below is using the org.json reference implementation from http://www.json.org/java/index.html):

JSONObject parent = new JSONObject();
JSONArray infoArray = new JSONArray();


for(int i = 0; i < SOMEARRAY.length; i++)
{
    JSONObject childObj = new JSONObject();
    childObj.put("Name", etName.getText());
    childObj.put("Number", etNumber.getText());
    infoArray.put(childObj);
}

parent.put("info", infoArray);

String encodedJsonString = parent.toString();