Problem z pobraniem danych Jsonem w aplikacji na android wykorzystującej php

Witam chciałem zrobić aplikacje w android studio która będzie pobierała dane z MySQL za pomocą JSon, skopiowałem kod ze strony https://abhishekprogramming.blogspot.in/2017/07/json-fetching-and-parsing-android-studio.html i próbowałem go przerobić na swoje potrzeby, niestety nie mogę pobrać danych, dane powinny pokazać się na label niestety tak się nie dzieje, dodam jeszcze ze kiedy próbowałem odpalić kod ściągnięty ze strony wszystko działało prawidłowo. Proszę pomóżcie bo utknąłem i nie mogę posunąć się dalej. Poniżej zamieszczam kod źródłowy

MainActivity

public class MainActivity extends AppCompatActivity {
    Button click;
    public  static TextView data;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        click = (Button) findViewById(R.id.btnClick);
        data = (TextView) findViewById(R.id.tvFetchData);

        click.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                fetchData process = new fetchData();
                process.execute();
            }
        });

    }
}

fetchData

class fetchData extends AsyncTask<Void,Void,Void>{
    String data ="";
    String dataParsed = "";
    String singleParsed ="";
    @Override
    protected Void doInBackground(Void... voids) {
        try {
            URL url = new URL("moj link");
            HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
            InputStream inputStream = httpURLConnection.getInputStream();
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
            String line = "";
            while(line != null){
                line = bufferedReader.readLine();
                data = data + line;
            }

            JSONArray JA = new JSONArray(data);
            for(int i =0 ;i <JA.length(); i++){
                JSONObject JO = (JSONObject) JA.get(i);
                singleParsed =  "car:" + JO.get("transporter_car_plates") + "\n"+
                        "name:" + JO.get("name") + "\n"+
                        "code:" + JO.get("code") + "\n"+
                        "description:" + JO.get("description") + "\n";

                dataParsed = dataParsed + singleParsed +"\n" ;

            }

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

        return null;
    }

    @Override
    protected void onPostExecute(Void aVoid) {
        super.onPostExecute(aVoid);

        MainActivity.data.setText(this.dataParsed);
    }
}

index.php

require_once 'Login_model.php';

    $Login_model = new Login_model();
    
    $Login_model->fetchData();

    $response = array();

    $response["transporter_car_plates"] = $Login_model->transporter_car_plates;
    $response["name"] = $Login_model->name;
    $response["code"] = $Login_model->code;
    $response["description"] = $Login_model->description;

    echo json_encode($response);

Login_model.php

require_once 'DB.php';

class Login_model extends DB{

    public $code = array();
    public $description = array();
    public $transporter_car_plates = array();
    public $name = array();

    public function fetchData(){

        //$stmt = $this->db->prepare("SELECT weighting_time, receipt_no FROM wasteman_generate");

        $stmt = $this->db->prepare("SELECT wasteman_receive.id, wasteman_receive.warehouse_id, wasteman_receive.transporter_car_plates, warehouses.name, wasteman_receive_parts.receive_id,wasteman_waste_types.code, wasteman_waste_types.description 
        from wasteman_receive 
        INNER JOIN warehouses ON wasteman_receive.warehouse_id = warehouses.id 
        INNER JOIN wasteman_receive_parts ON wasteman_receive.id = wasteman_receive_parts.receive_id 
        INNER JOIN wasteman_waste_types ON wasteman_receive_parts.waste_type_id = wasteman_waste_types.id 
        where wasteman_receive.status=1 or wasteman_receive.status=2;");

        $stmt->execute();

        //$result = $stmt->fetchAll();
        //$print_r($result);

        foreach($stmt->fetchAll() as $row){

            $this->transporter_car_plates[] = array('wasteman_receive.transporter_car_plates' => $row['transporter_car_plates']);
            $this->name[] = array('warehouses.name' => $row['name']);
            $this->code[] = array('wasteman_waste_types.code' => $row['code']);
            $this->description[] = array('wasteman_waste_types.description' => $row['description']);

        }

        //echo '<br>'.count($this->weighting_time).'<br>';
        //echo count($this->weighting_time).'<br>';
    }


}

Moj JSon

{"transporter_car_plates":[{"wasteman_receive.transporter_car_plates":"KMY4WL3"},{"wasteman_receive.transporter_car_plates":"KOS65204"}],"name":[{"warehouses.name":"Sortownia 2"},{"warehouses.name":"Sortownia 2"}],"code":[{"wasteman_waste_types.code":"15 01 02"},{"wasteman_waste_types.code":"15 01 02"}],"description":[{"wasteman_waste_types.description":"Opakowania z tworzyw sztucznych"},{"wasteman_waste_types.description":"Opakowania z tworzyw sztucznych"}]}

Żeby ten kod zadziałał, Twój JSON musiałby wyglądać mniej więcej tak:

[{"transporter_car_plates":"KMY4WL3","name":"Sortownia 2","code":"15 01 02","description":"Opakowania z tworzyw sztucznych"},{"transporter_car_plates":"KOS65204","name":"Sortownia 2","code":"15 01 02","description":"Opakowania z tworzyw sztucznych"}]

I inna sprawa że nie powinno się tak załatwiać sprawy z ustawieniem tekstu w TextView jak w tym przypadku.