How to parse multiple rows with jsonOject

Question

I am fetching data from mysql using php API and i pass results to android with Json_encode but when i populate results to android

Answer 1

You aren't getting just one row, you're creating a new ArrayList through every iteration. You'll only ever get the last row this way.

ArrayList> wordList;
                       wordList = new ArrayList>();

You need to initialize your list outside your for loop.

ArrayList> wordList = new ArrayList>();
for (int i = 0; i < response.length; i++) {

    // add your information here
}

Edit::

I see what's happening. You're looping for the length of String. You need to convert your String response to a JSONArray and loop through that. This way you step through each JSONObject in the array

        List> wordList = new 
            ArrayList>();
        try {
           JSONArray array = new JSONArray(response);
           for (int i = 0; i < array.length(); i++) {
                JSONObject jsonObject = array.getJSONObject(i);
                // get user // do rest of work
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }

Edit 2::

This should get you going. I haven't tested, so watch out for any missing brackets.

    private void GetParkingInfo(final String plate_no) {
    // Tag used to cancel the request
    String tag_string_req = "req_Verfication";

    progressBarList.setVisibility(View.VISIBLE);
    //        myList.setVisibility(View.GONE);

    StringRequest strReq = new StringRequest(Request.Method.POST,
            Urls.URL_driver_parking_information, new
            Response.Listener() {

                @Override
                public void onResponse(String response) {
                    Log.d(TAG, "cerfication Response: " + response.toString());
                    try {
                        JSONArray jsonArray = new JSONArray(response);
                        if (jsonArray != null && !jsonArray.length() > 0) {
                            for (int i = 0; i < jsonArray.length(); i++) {
                                JSONObject jsonObject = jsonArray.getJSONObject(i);
                                if (!jsonObject.isNull("user")) {
                                    JSONObject user = jsonObject.getJSONObject("user");
                                    String paid_amount = user.getString("paid_amount");
                                    String parking_duration =
                                            user.getString("parking_duration");
                                    String parking_name = user.getString("parking_name");
                                    HashMap prodHashMap = new
                                            HashMap();

                                    prodHashMap.put("paid_amount", paid_amount);
                                    prodHashMap.put("parking_duration", parking_duration);
                                    prodHashMap.put("parking_name", parking_name);

                                    ArrayList> wordList;
                                    wordList = new ArrayList>();
                                    wordList.add(prodHashMap);
                                    userList = wordList ;
                                    ShowListData();

                                    progressBarList.setVisibility(View.GONE);
                                }
                            }
                        }
                    } catch (JSONException e) {
                        e.printStackTrace();
                        Toast.makeText(getApplicationContext(), "Json error: " +
                                e.getMessage(), Toast.LENGTH_LONG).show();
                        //                     // hiding the progress bar
                        progressBarList.setVisibility(View.GONE);
                        myList.setVisibility(View.VISIBLE);
                    }
                }
            }, new Response.ErrorListener() {

        @Override
        public void onErrorResponse(VolleyError error) {
            Log.e(TAG, "Verfication error Error: " + error.getMessage());

            Toast.makeText(getApplicationContext(),
                    "response error", Toast.LENGTH_LONG).show();
            //                Toast.makeText(getApplicationContext(),
            //                        error.getMessage(), Toast.LENGTH_LONG).show();
            // hiding the progress bar
            progressBarList.setVisibility(View.GONE);
            myList.setVisibility(View.VISIBLE);
        }
    }) {
        @Override
        protected Map getParams() {

            // Posting parameters to verfication url
            Map params = new HashMap();
            params.put("plate_no", plate_no);
            return params;
        }
    };
    //        // Adding request to request queue

    AppController.getInstance().addToRequestQueue(strReq,tag_string_req);
}

Edit 3::

if ($usersArr != false) { 
    foreach($usersArr as $user){
        $subresponse["error"] = FALSE; 
        $subresponse["user"]["paid_amount"] = $user["paid_amount"];
        $subresponse["user"]["parking_duration"] = $user["parking_duration"]; 
        $subresponse["user"]["parking_name"] = $user["parking_name"];
        $response[] = $subresponse;
        $json = json_encode($response);

how I think it should look

  if ($usersArr != false) { 
       foreach($usersArr as $user){
           $subresponse["error"] = FALSE; 
           $subresponse["user"]["paid_amount"] = $user["paid_amount"];
           $subresponse["user"]["parking_duration"] = $user["parking_duration"]; 
           $subresponse["user"]["parking_name"] = $user["parking_name"];
           $response[] = $subresponse;
      } 
      $json = json_encode($response);