Question

I can connect to server and get json data. it is in this format:

    {"clazz":"ManiaContestantList","contestants":[

    {"clazz":"ManiaContestant","contestantId":"1","contestantName":"Adira","photoUrl":"/fileFeed.action?service=astroManiaService&action=viewFile&type=JPG&path=1/1_CONTESTANT_PHOTO.png"},
    {"clazz":"ManiaContestant","contestantId":"2","contestantName":"Akim","photoUrl":"/fileFeed.action?service=astroManiaService&action=viewFile&type=JPG&path=2/2_CONTESTANT_PHOTO.png"},
.
.
.
    ]}

My code is like this:

@Override
    protected void onStart() {
        super.onStart();
        Log.i("NewsList", "inside onStart();");

        try {
            URL url = new URL("/MY URL/");
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setConnectTimeout(Manager.ConnTimeout);
            conn.setReadTimeout(Manager.ReadTimeout);

            int responseCode = conn.getResponseCode();
            Log.i("Connection oppened", "Response code is:" + responseCode);
            if (responseCode == HttpURLConnection.HTTP_OK) {
                BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                if (in != null) {
                    StringBuilder strBuilder = new StringBuilder();
                    // Read character by character              
                    int ch = 0;
                    while ((ch = in.read()) != -1)
                        strBuilder.append((char) ch);

                    // get returned message and show it
                    strServerResponseMsg = strBuilder.toString();
                    Log.i("Data returned by server:", strServerResponseMsg);



                    JSONArray jObjects = new JSONArray(strServerResponseMsg);
                    for(int i=0; i<jObjects.length(); i++){
                        System.out.println(jObjects.getJSONObject(i).getString("contestantId").toString());
                        System.out.println(jObjects.getJSONObject(i).getString("contestantName").toString());
                        System.out.println(jObjects.getJSONObject(i).getString("photoUrl").toString());
                }
                in.close();
            }

        } catch (IOException e) {
            e.printStackTrace();
        } catch (JSONException e) {
            e.printStackTrace();
        }       


    }

I have my responsed Json in “strServerResponseMsg” variable. but in line “JSONArray jObjects = new JSONArray(strServerResponseMsg);” Logcat shows typemismatch error.

Please tell me what is my problem?

Answer 1

{ implies it is an Object. [ implies it is an Array. As your string starts with { so it is an JSONObject rather than JSONArray.

JSONArray jObjects = new JSONArray(strServerResponseMsg);

must be like this

JSONObject jObjects = new JSONObject(strServerResponseMsg);