JSONArray cannot be converted to JSONObject error

Question

While fetching json data I am getting error:

JSONArray cannot be converted to JSONObject

Code for json generate:

JSONObject parent = new JSONObject();
DatabaseHandler dbh = new DatabaseHandler(getApplicationContext());  
            for(int i=0; i < allEds.size(); i++){
                String edsText = allEds.get(i).getText().toString();                                           
               //spinner = allSpns.get(i);
               String spinSelected=allSpns.get(i).getSelectedItem().toString();                  
               try
                {
                   JSONObject json = new JSONObject();          
                   json.put("Id", i);
                   json.put("FieldName", edsText);
                   json.put("FieldType",spinSelected);
                   parent.accumulate("data", json);



                }
                catch (JSONException e)
                {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                }                   

            }
Generated json is   
            {"data":
[{"FieldType":"Account Number","FieldName":"r","Id":0},
  {"FieldType":"Net      Banking Id","FieldName":"tt","Id":1}
 ]}
code for json read
------------------
JSONObject jsonObj = new JSONObject(folderStructure);
        JSONObject data = jsonObj.getJSONObject("data"); 
        String id = data.getString("Id"); 
        String value = data.getString("FieldName"); 
        Log.d("Item name: ", value);

While reading the above json am getting errors Any thing wrong with the code??

add code for reading json too.

jeet
– jeet

2012-09-24 06:02:28 +00:00
Commented Sep 24, 2012 at 6:02 — jeet
– jeet, Commented Sep 24, 2012 at 6:02
where you placed your json code... in javascript?

Raj Adroit
– Raj Adroit

2012-09-24 06:07:39 +00:00
Commented Sep 24, 2012 at 6:07 — Raj Adroit
– Raj Adroit, Commented Sep 24, 2012 at 6:07

jeet · Accepted Answer · 2012-09-24 07:41:37Z

15

Change

JSONObject data = jsonObj.getJSONObject("data");

to

JSONArray data = jsonObj.getJSONArray("data");

As value of data is JsonArray not JSONObject.

And to Get individual Ids and Field Names, you should loop through this JSONArray, as follows:

for(int i=0; i<data.length(); i++)
{
     JSONObject obj=data.getJSONObject(i);
     String id = obj.getString("Id"); 
        String value = obj.getString("FieldName"); 
        Log.d("Item name: ", value);
}

edited Sep 24, 2012 at 7:41

answered Sep 24, 2012 at 6:08

jeet

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3 Comments

jeet Over a year ago

@user1682133 you are welcome, please check my edited answer, if it answers your question fully, or not.

user1682133 Over a year ago

i think change JSONObject obj=data.JSONObject(i); to JSONObject obj=data.getJSONObject(i); and its working for me , thnks :)

Amitsharma Over a year ago

@jeet i have same problem .........when i put this JSONObject result=jsonobject.getJSONObject("result"); JSONArray result=jsonobject.getJSONArray("result"); then i got to create result array rename ...it mean create array diffrent name ..........what i do in this case ...........if any idea .......thanks

Tara · Accepted Answer · 2017-10-11 07:04:23Z

Use this method:

private void showJSON(String response) {
        list = new ArrayList<>();
        String name = null;
        try {

            JSONArray jsonObject = new JSONArray(response);
            for(int i = 0; i < jsonObject.length(); i++) {
                JSONObject obj = jsonObject.getJSONObject(i);
                //store your variable
                list.add(obj.getString("Name"));
            }
//            JSONArray result = jsonObject.getJSONArray("");
//            JSONObject collegeData = result.getJSONObject(0);
//            list.add(jsonObject.getString(collegeData.getString("Name")));
            Toast.makeText(getActivity(), name, Toast.LENGTH_LONG).show();
            city_list.addAll(list);
            adapter.notifyDataSetChanged();
        } catch (JSONException e) {
            e.printStackTrace();
            // Toast.makeText(getApplicationContext(), response, Toast.LENGTH_LONG).show();
        }

    }

Eric · Accepted Answer · 2012-09-24 06:10:25Z

0

data is an array, not an object:

JSONArray data = jsonObj.getJSONArray("data");

answered Sep 24, 2012 at 6:10

Eric

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1 Comment

user1682133 Over a year ago

my current code is String value = data.getString("FieldName");

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