Nicht Abrufen von Daten vom Server

Question

Ich versuche, Daten von Server zu bekommen, habe ich alle die Codierung Teil getan erhalte ich Statuscode 200 (Erfolg), aber nicht immer Daten.

Dies ist meine JSON-Daten:

{ 
    "status": 200, 
    "data": [ 
    { 
     "id": "1", 
     "company_id": "8", 
     "customer_id": "17", 
     "driver_id": null, 
     "city_id": "2", 
     "vehicletype_id": "4", 
     "status": "Pending", 
     "source_long": "77.59505250000007", 
     "source_lat": "12.9998698", 
     "dest_long": "77.62877609999998", 
     "dest_lat": "12.946679", 
     "source": "Jayamahal, Bengaluru, Karnataka, India", 
     "destination": "Ejipura Bus Stand, Ejipura Main Road, Ejipura, Bengaluru, Karnataka, India", 
     "bookingtime": "2016-06-14 06:55:38" 
    } 
    ] 
} 

Dies ist mein Code-Daten zu erhalten:

JsonObjectRequest jor = new JsonObjectRequest(Request.Method.GET, OPEN_BOOKINGS_URL, null, new Response.Listener<JSONObject>() { 
      @Override 
      public void onResponse(JSONObject response) { 
       String string = null; 
       JSONArray ja =null; 
       try { 
        Toast.makeText(getContext(), "You are in Try Block", Toast.LENGTH_SHORT).show(); 
        ja=response.getJSONArray("data"); 
        if(ja!=null) 
        { 
         Toast.makeText(getContext(), "Ja is not null with data", Toast.LENGTH_SHORT).show(); 
         for (int i=0; i<ja.length(); i++) 
         { 
          Toast.makeText(getActivity(), "for loop", Toast.LENGTH_SHORT).show(); 
          JSONObject jo = ja.getJSONObject(i); 
          Toast.makeText(getActivity(), jo.toString(), Toast.LENGTH_SHORT).show(); 
         } 
        } 
        else 
        { 
         tv.setText("ja is null"); 
         // Toast.makeText(getActivity(), "ja is null", Toast.LENGTH_SHORT).show(); 
        } 


       } catch (JSONException e) { 
        e.printStackTrace(); 
       } 
       Toast.makeText(getActivity(), response.toString(), Toast.LENGTH_SHORT).show(); 

      } 
     }, new Response.ErrorListener() { 
      @Override 
      public void onErrorResponse(VolleyError error) { 
       tv.setText(error.toString()); 
      } 
     }); 
     rq = Volley.newRequestQueue(getContext()); 
     rq.add(jor); 
    } 

Im Code, den ich Toast, ob mein Code-Block zu überprüfen geschrieben ist Ausführen oder nicht.

ich Daten immer bin wie,

{ 
    "status": 200, 
    "data": [ 
    {} 
    ] 
} 

Answer 1

Bitte versuchen Sie den Code unten zu verwenden

private void callDashboradWS() { 
    AsyncTask<String, String, String> _Task = new AsyncTask<String, String, String>() { 
     String _responseMain = ""; 


     @Override 
     protected void onPreExecute() { 
      Constant.showLoader(getActivity()); 

     } 

     @Override 
     protected String doInBackground(String... arg0) { 
      if (NetworkAvailablity.checkNetworkStatus(getActivity())) { 
       try { 
        HttpURLConnection urlConnection; 
        // String query = builder.build().getEncodedQuery(); 
        URL url = new URL("YOURSERVICEURL)); 
        System.out.println(url.toString() + " <<<"); 
        urlConnection = (HttpURLConnection) ((url.openConnection())); 
        urlConnection.setDoInput(true); 
        urlConnection.setDoOutput(true); 
        urlConnection.setUseCaches(false); 
        urlConnection.setChunkedStreamingMode(1024); 
        urlConnection.setRequestMethod("GET"); 
        urlConnection.setReadTimeout(10000); 
        urlConnection.connect(); 


        // Write 
        OutputStream outputStream = urlConnection.getOutputStream(); 
        BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8")); 
        // writer.write(query); 
        writer.close(); 
        outputStream.close(); 

        System.out.println("Response code :-- " + urlConnection.getResponseCode()); 
        int responsecode = urlConnection.getResponseCode(); 
        //Read 

        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream(), "UTF-8")); 
        String line = null; 
        StringBuilder sb = new StringBuilder(); 
        while ((line = bufferedReader.readLine()) != null) { 
         System.out.println("in while"); 
         sb.append(line); 
        } 
        bufferedReader.close(); 
        _responseMain = sb.toString(); 


       } catch (UnsupportedEncodingException e) { 
        e.printStackTrace(); 
       } catch (IOException e) { 
        e.printStackTrace(); 
       } 
      } else { 
       getActivity().runOnUiThread(new Runnable() { 
        @Override 
        public void run() { 
         // TODO Auto-generated method stub 
         Constant.showToast("Server Error ", getActivity()); 
        } 
       }); 
      } 
      return null; 
     } 

     @Override 
     protected void onPostExecute(String result) { 
      Constant.hideLoader(); 
      System.out.println("SIGNIN RESPONSE: " + _responseMain); 

     } 


    }; 
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) { 
     _Task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (String[]) null); 
    } else { 
     _Task.execute((String[]) null); 
    } 
} 

Answer 2

Sie sind nicht Daten von Server-Seite bekommen, gibt es kein Problem, das von Ihrer Seite. keine Daten sendet .. Sie gut tat ...