How to send parameters while sending JSONArray request

Question

I have to access a web service which takes one parameter and gives JSONArray in response. I want to know how to send a POST parameter so that I get response in JSONArray. So far I have done the JSON Parsing part correctly and the data is being populated in recycler view. I have tried to Override protected Map<String, String> getParams() as seen in one tutorial but that override is showing an error "Method does not override method from its superclass". Kindly see my code and guide me on how to implement it correctly.

public void JSON_WEB_CALL(){

    JsonArrayRequest jsArrRequest = new JsonArrayRequest
            (Request.Method.GET, HTTP_SERVER_URL, null, new Response.Listener<JSONArray>() {

                @Override
                public void onResponse(JSONArray response) {
                    //mTxtDisplay.setText("Response: " + response.toString());
                    JSON_PARSE_DATA_AFTER_WEBCALL(response);

                }
            }, new Response.ErrorListener() {

                @Override
                public void onErrorResponse(VolleyError error) {
                    // TODO Auto-generated method stub

                }


                @Override //This Override is showing an error "Method does not override method from its superclass"
                protected Map<String, String> getParams() {
                    Map<String, String> params = new HashMap<String, String>();
                    params.put("param1", "one");
                    params.put("param2", "two");
                    return params;
                }

            });

    requestQueue = Volley.newRequestQueue(this);

    requestQueue.add(jsArrRequest);

}



public void JSON_PARSE_DATA_AFTER_WEBCALL(JSONArray array){

    for(int i = 0; i<array.length(); i++) {

        DataModel GetDataModel = new DataModel();

        JSONObject json = null;
        try {
            json = array.getJSONObject(i);

            GetDataModel.setId(json.getString("PRODID"));

            GetDataModel.setPlateNo(json.getString("GRADE"));

            GetDataModel.setPlateCode(json.getString("COLOR"));


        }
        catch (JSONException e)
        {

            e.printStackTrace();
        }

        DataAdapterClassList.add(GetDataModel);
        mSwipeRefreshLayout.setRefreshing(false);

    }

    recyclerViewadapter = new NewRecyclerViewAdapter(DataAdapterClassList, this);

    recyclerView.setAdapter(recyclerViewadapter);

    if (array.length()!=0) {
        SHOW_ALERT(array);
        sendNotification(recyclerView, array);
    }
}

score 1 · Answer 1 · edited Mar 15 '19 at 12:59

Your calling a POST request so you have use Request.Method.POST instead of Request.Method.GET Please use the code below,

public void JSON_WEB_CALL(){

    JsonArrayRequest jsArrRequest = new JsonArrayRequest
            (Request.Method.POST, HTTP_SERVER_URL, null, new Response.Listener<JSONArray>() {

                @Override
                public void onResponse(JSONArray response) {
                    //mTxtDisplay.setText("Response: " + response.toString());
                    JSON_PARSE_DATA_AFTER_WEBCALL(response);

                }
            }, new Response.ErrorListener() {

                @Override
                public void onErrorResponse(VolleyError error) {
                    // TODO Auto-generated method stub

                }


                @Override //This Override is showing an error "Method does not override method from its superclass"
                protected Map<String, String> getParams() {
                    Map<String, String> params = new HashMap<String, String>();
                    params.put("param1", "one");
                    params.put("param2", "two");
                    return params;
                }

            });

    requestQueue = Volley.newRequestQueue(this);

    requestQueue.add(jsArrRequest);

}

score 0 · Answer 2 · answered Feb 20 '18 at 07:37

0

Create params first with key value pair using Hashmap and pass it

    HashMap<String ,String> params=new HashMap<String, String>();
    params.put("key",value);

JsonArrayRequest jsArrRequest = new JsonArrayRequest
            (Request.Method.GET, HTTP_SERVER_URL, params, new Response.Listener<JSONArray>() {
  //....
}

answered Feb 20 '18 at 07:37

Rajan Kali

12,627
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Did you try this? – David Kariuki Mar 15 '19 at 18:27

How to send parameters while sending JSONArray request

2 Answers2