How do I retrieve the data from AsyncTasks doInBackground()?

Question

I\'ll keep this one as simple as I can.

I have a method in my control layer that uses a class CallServiceTask that extends AsyncTask. When

Answer 1

private void walletStatements() {
        JSONObject post_search = new JSONObject();
        try {

            post_search.put("username", getUserName);


        } catch (JSONException e) {
            e.printStackTrace();
        }
        if (post_search.length() > 0) {
            try {
               new Getwalletstatements().execute(String.valueOf(post_search));

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

        }
    }


    class Getwalletstatements extends AsyncTask {
        String JsonResponse = null;
        ProgressDialog dialog;

        @Override
        protected void onPreExecute() {
            super.onPreExecute();

            dialog = new ProgressDialog(ReportsActivity.this);
            dialog.setMessage("Please Wait...");
            dialog.setCancelable(false);
            dialog.show();
        }

        @Override
        protected String doInBackground(String... params) {
            String JsonDATA = params[0];
            HttpURLConnection urlConnection = null;
            BufferedReader reader = null;
            URL url = null;

            try {
                url = new URL(Constant.url+"GetReports_v9.php");
                urlConnection = (HttpURLConnection) url.openConnection();
                urlConnection.setDoOutput(true);                // is output buffer writter
                urlConnection.setRequestMethod("POST");
                urlConnection.setRequestProperty("Content-Type", "application/json");
                urlConnection.setRequestProperty("Accept", "application/json");//set headers and method
                Writer writer = new BufferedWriter(new OutputStreamWriter(urlConnection.getOutputStream(), "UTF-8"));
                writer.write(JsonDATA);// json data
                writer.close();

                InputStream inputStream = urlConnection.getInputStream();//input stream
                StringBuffer buffer = new StringBuffer();
                if (inputStream == null) {                    // Nothing to do.
                    return null;
                }
                reader = new BufferedReader(new InputStreamReader(inputStream));
                String inputLine;

                while ((inputLine = reader.readLine()) != null)
                    buffer.append(inputLine + "\n");

                if (buffer.length() == 0) {                    // Stream was empty. No point in parsing.
                    return null;
                }

                JsonResponse = buffer.toString();


                return JsonResponse;

            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (ProtocolException e) {
                e.printStackTrace();
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                if (urlConnection != null) {
                    urlConnection.disconnect();
                }
                if (reader != null) {
                    try {
                        reader.close();
                    } catch (final IOException e) {

                    }
                }
            }


            return null;
        }

        @Override
        protected void onPostExecute(String s) {

            if (JsonResponse != null) {
                try {
                    NetworkIN.iv= Constant.iv;
                    NetworkIN.change=Constant.key;
                    NetworkIN mCrypt=new NetworkIN();
                    String decrypted = new String( mCrypt.decrypt(JsonResponse.trim()) );

                    if(decrypted!=null){
                        JSONObject ordersHistory = new JSONObject(decrypted);
                        msg = ordersHistory.getString("msg");

                        JSONArray jsonArray = ordersHistory.getJSONArray("PPDetails");

                        ordersCount = jsonArray.length();
                        //for (int j = 0; j < jsonArray.length(); j++)
                        for (int j = jsonArray.length() - 1; j >= 0; j--)
                        {
                            JSONObject jsonObject = jsonArray.getJSONObject(j);


                            String message,total_in,inType ;

                            total_in =jsonObject.getString("total_in");
                            inType =jsonObject.getString("in_type");
                            message="Congratulations your wallet is credited by Rs."+total_in+" because of "+inType;
                            ReportsPojo reportsPojo = new ReportsPojo(jsonObject.getString("reg_id"),
                                    jsonObject.getString("username"),
                                    jsonObject.getString("transfer_from"),
                                    jsonObject.getString("transfer_to"),
                                    jsonObject.getString("total_in"),
                                    jsonObject.getString("tds"),
                                    jsonObject.getString("in_amount") ,
                                    jsonObject.getString("out_amount"),
                                    jsonObject.getString("in_type"),
                                    jsonObject.getString("created_on"),
                                    message);

                            reportsItems.add(reportsPojo);
                        }
                    }else{

                    }


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

                if (msg.equals("Success")) {

                    reportsAdapter = new ReportsAdapter(ReportsActivity.this, reportsItems);
                    reportsListview.setAdapter(reportsAdapter);

                } else {
                    Toast.makeText(ReportsActivity.this, "Sorry "+msg, Toast.LENGTH_LONG).show();

                }
                dialog.dismiss();
            } else {
                dialog.dismiss();
            }
        }