Send JSON Array to PHP

Hi Everybody,

I am developing an android app, an ordering app. I want to send the details of items added to cart in a JSON format to a php page so as to process it there and return the result of the processing.
I am using Android studio.

The code is below

    protected String doInBackground(String... args) {

     String url = "mysite/mypage";

        JSONArray cart_items = new DatabaseHelper().getItemsAsJson() ;
        JSONArray pdet = new JSONArray();

        String JsonDATA ="";

        JSONObject jsonobj = new JSONObject();


        try {
            jsonobj.put("name", "Aneh");
            jsonobj.put("daddrs", "my address");
            jsonobj.put("dmob", "9990909090");
            jsonobj.put("dlocn", "Kochi");
            jsonobj.put("dlmark", "Stadium");
            jsonobj.put("uid", "313");
        } catch (JSONException e) {
            e.printStackTrace();
        }

        pdet.put(jsonobj);

        JSONObject JSONData = new JSONObject();
        try {
            JSONData.put("cart",cart_items);
            JSONData.put("pdet",pdet);
        } catch (JSONException e) {
            e.printStackTrace();
        }

// structure of json

// {"pdet":[{"uid":"313","dlocn":"Kochi","dlmark":"Stadium","dmob":"9990909090","daddrs":"my address","name":"Aneh"}],"cart":[{"cr_itemname":"Domex Floor Cleaner 1 ltr","cr_itemrate":"0","cr_qty":"1","cr_offerrate":"0","cr_total":"100","cr_itemid":"1","cr_slno":"1"},{"cr_itemname":"Nestle EveryDay 400 gm","cr_itemrate":"0","cr_qty":"1","cr_offerrate":"0","cr_total":"100","cr_itemid":"1","cr_slno":"1"},{"cr_itemname":"Colgate Max Fresh Blue Gel 80 gm","cr_itemrate":"0","cr_qty":"1","cr_offerrate":"0","cr_total":"100","cr_itemid":"1","cr_slno":"1"},{"cr_itemname":"Nestle EveryDay","cr_itemrate":"0","cr_qty":"1","cr_offerrate":"0","cr_total":"100","cr_itemid":"1","cr_slno":"1"},{"cr_itemname":"Kelloggs Cornflakes 475 Grams","cr_itemrate":"0","cr_qty":"1","cr_offerrate":"0","cr_total":"100","cr_itemid":"1","cr_slno":"1"},{"cr_itemname":"Ariel 24 Hrs Fresh 500 gm","cr_itemrate":"0","cr_qty":"1","cr_offerrate":"0","cr_total":"100","cr_itemid":"1","cr_slno":"1"},{"cr_itemname":"Colgate Max Fresh Blue Gel 80 gm","cr_itemrate":"0","cr_qty":"1","cr_offerrate":"0","cr_total":"100","cr_itemid":"1","cr_slno":"1"},{"cr_itemname":"Domex Floor Cleaner 1 ltr","cr_itemrate":"0","cr_qty":"1","cr_offerrate":"0","cr_total":"100","cr_itemid":"1","cr_slno":"1"},{"cr_itemname":"Ariel 24 Hrs Fresh 500 gm","cr_itemrate":"0","cr_qty":"1","cr_offerrate":"0","cr_total":"100","cr_itemid":"1","cr_slno":"1"},{"cr_itemname":"Colgate Max Fresh Red Gel 80 gm","cr_itemrate":"0","cr_qty":"1","cr_offerrate":"0","cr_total":"100","cr_itemid":"1","cr_slno":"1"},{"cr_itemname":"Boost 200 gm ","cr_itemrate":"0","cr_qty":"1","cr_offerrate":"0","cr_total":"100","cr_itemid":"1","cr_slno":"1"}]}

// end structure of json

        values.put("shpcart", cart_items.toString());

        JSONObject json=null;
        json= jParser.makeHttpRequest(url,  "POST",values);
        if (json==null)
        {
            Log.d("Save order:  ", "Null");
        }

}

// JSON Parser Class

public class JsonParser {
HttpURLConnection connection;
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
String paramstr;
// constructor
public JsonParser() {

}

public JSONObject makeHttpRequest(String url, String method,
                                  ContentValues params) {


    // Making HTTP request
    try {

        // check for request method
        if(method == "POST"){

           URL urlstr = new URL(url);
           connection = (HttpURLConnection) urlstr.openConnection();
           connection.setDoOutput(true);
           connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type", "application/json");
            connection.setRequestProperty("Accept", "application/json");
            paramstr=params.getAsString("shpcart") ;
                    DataOutputStream wr;
                    OutputStream os;
                    try {
                        os = connection.getOutputStream();
                        wr = new DataOutputStream(os);
                        wr.writeBytes(paramstr);

                        wr.flush();
                        wr.close();
                        is = connection.getInputStream();

                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                    // your logic

          //  DataOutputStream wr;
          //  OutputStream os;
          //  os= connection.getOutputStream();
          //  wr = new DataOutputStream(os);
          //  wr.writeBytes(params.toString());
          //  wr.flush();
          //  wr.close();
            ////'''
  //          OutputStream os;
    //        os = connection.getOutputStream();
      //      OutputStreamWriter wr = new OutputStreamWriter(os);
        //    wr.write(params.toString());
        //    wr.flush();
            //'''''''''''



            //BufferedWriter writer;
            //OutputStream os;
            //os=connection.getOutputStream();
            //osw=new OutputStreamWriter();
           // writer = new BufferedWriter(new , "UTF-8");
           // writer.write( params.toString());

// json data
// writer.close();
//is = connection.getInputStream();
//input stream

        }else if(method == "GET"){
            URL urlstr = new URL(url);
            HttpURLConnection connection = (HttpURLConnection) urlstr.openConnection();
            connection.setRequestMethod("GET");
            connection.setDoInput(true);
            connection.connect();
            is = connection.getInputStream();
        }

    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
        e.getCause();
    }

    try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                is, "iso-8859-1"), 8);
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
        is.close();
        json = sb.toString();
    } catch (Exception e) {
        Log.e("Buffer Error", "Error converting result " + e.toString());
    }

    // try parse the string to a JSON object
    try {
        jObj = new JSONObject(json);
    } catch (JSONException e) {
        Log.e("JSON Parser", "Error parsing data " + e.toString());
    }

    // return JSON String
    return jObj;

}

}

// php code - saveorderapp.php

$shpcart = $_POST['shpcart'];

  $shpcart1   = json_decode($shpcart);


if(!empty($shpcart1)) 
{
    $response["success"] = 1;
    echo json_encode($response);
}
else
{
    $response["success"] = 0;
    echo json_encode($response);

}

As I am new to Android I cannot figure out where is the problem, is it in android or php code. In the php code I want to receive the json as an array so as I can loop through it and insert each item. Please help it is really urgent.

Thanks in advance!!!