Error Android Volley Unexpected response code 400

Question

i am using volley for a get data function but i get unexpected response code 400 for http. Below i have pasted my code

      RequestQueue queue = Volley.newRequestQueue(getActivity());
            StringRequest sr = new StringRequest(Request.Method.PUT,URL, new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    Log.e("loi", "" + response);
                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    Log.e("loi", "" + error);
                }
            }){
                @Override
                protected Map<String,String> getParams(){
                    Map<String,String> params = new HashMap<String, String>();
                    int size = SupportData.vtvlist.get(stt).getmPostArrayList().size();
                    for (int i = 0; i < size; i++) {
                        name = SupportData.vtvlist.get(stt).getmPostArrayList().get(i).getNamepost().toString();
                        value = SupportData.vtvlist.get(stt).getmPostArrayList().get(i).getValue().toString();
                        params.put(""+name,value);
                    }

                    return params;
                }

                @Override
                public Map<String, String> getHeaders() throws AuthFailureError {
                    Map<String,String> params = new HashMap<String, String>();
                    params.put("Content-Type","application/x-www-form-urlencoded");
                    return params;
                }
            };
            queue.add(sr);

Is there anyone who can tell me where I am doing wrong in my code? Any help is appreciable.

Possible duplicate of [Android Volley - BasicNetwork.performRequest: Unexpected response code 400](https://stackoverflow.com/questions/26796965/android-volley-basicnetwork-performrequest-unexpected-response-code-400) — AskNilesh, Apr 16 '18 at 09:37
400 status code is for `Bad Request` check if you are passing valid URL. — Mohammed Farhan, Apr 16 '18 at 09:44
try changing `Request.Method.PUT` to `Request.Method.GET` inside `StringRequest()` — Mohammed Farhan, Apr 16 '18 at 09:45
Use Request.Method.POST and if u have any parameters such as username or password pass it in the params.put("key",key value); if not do not pass anything and also remove params.put("Content-Type","application/x-www-form-urlencoded"); from there and see if it is working or not. — krishank Tripathi, Apr 16 '18 at 09:55
see this if you have nay issues https://stackoverflow.com/questions/17049473/how-to-set-custom-header-in-volley-request?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa — krishank Tripathi, Apr 16 '18 at 09:58

Mohammed Farhan · Accepted Answer · 2018-04-16T10:01:05.400

2

try changing Request.Method.PUT to Request.Method.POST since you are trying to get data with StringRequest.

edited Apr 16 '18 at 10:01

answered Apr 16 '18 at 09:50

Mohammed Farhan

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Error Android Volley Unexpected response code 400

1 Answers1