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Android

Posted by tony lin
tony lin
538 Points

I am using Android Volley library for network request, unable to post parameters to server using JsonObjectRequest

Hi have anyone used Android Volley library to post json parameters to server?

I followed example on this link to send name and password. http://www.androidhive.info/2014/05/android-working-with-volley-library-1/

code: '''android { String tag_json_obj = "json_obj_req";

String url = "http://api.androidhive.info/volley/person_object.json";

ProgressDialog pDialog = new ProgressDialog(this); pDialog.setMessage("Loading..."); pDialog.show(); 

    JsonObjectRequest jsonObjReq = new JsonObjectRequest(Method.POST,
            url, null,
            new Response.Listener<JSONObject>() {

                @Override
                public void onResponse(JSONObject response) {
                    Log.d(TAG, response.toString());
                    pDialog.hide();
                }
            }, new Response.ErrorListener() {

                @Override
                public void onErrorResponse(VolleyError error) {
                    VolleyLog.d(TAG, "Error: " + error.getMessage());
                    pDialog.hide();
                }
            }) {

        @Override
        protected Map<String, String> getParams() {
            Map<String, String> params = new HashMap<String, String>();
            params.put("name", "Androidhive");
            params.put("email", "abc@androidhive.info");
            params.put("password", "password123");

            return params;
        }

    };

// Adding request to request queue

AppController.getInstance().addToRequestQueue(jsonObjReq, tag_json_obj); } '''

I just couldn't figure out why on server side parameters are always null. I used another network library AsyncTask, everything worked, so it appeared something wrong with this code for me. However, I want to use Volley rather than AsyncTask.

Anyone has idea?

1 Answer

tony lin
tony lin
538 Points
tony lin
tony lin
538 Points

I found answer here: http://stackoverflow.com/questions/19837820/volley-jsonobjectrequest-post-request-not-working/19945676#19945676

need to add helper class