name-update-api-call

private void updateUserDisplayName(final String displayName, final AlertDialog alertDialog){

        String fullUrl = CommonUtil.BASE_URL+"user/update";
        final StringRequest request = new StringRequest(Request.Method.POST, fullUrl,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        UserDetailsUpdateResponse responsePojo = new Gson().fromJson(response, UserDetailsUpdateResponse.class);

                        if (responsePojo != null && responsePojo.getStatus().equalsIgnoreCase("success")) {
                            Toast.makeText(ChitChatActivity.this, "Success", Toast.LENGTH_SHORT).show();
                            storeData.setData(ChitChatActivity.this, StoreData.USER_NAME, displayName);
                            alertDialog.dismiss();
                        } else
                            Toast.makeText(ChitChatActivity.this, "Name update failed", Toast.LENGTH_SHORT).show();
                    }
                },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Toast.makeText(ChitChatActivity.this, error.getLocalizedMessage(), Toast.LENGTH_SHORT).show();
                    }
                }
        )
        {
            @Override
            public Map<String, String> getHeaders() throws AuthFailureError {
                return CommonUtil.getHeaderInfo(ChitChatActivity.this);
            }

            @Override
            public byte[] getBody() throws AuthFailureError {
                try {
                    JSONObject jsonObject = new JSONObject();
                    jsonObject.put("displayName", displayName);
                    return jsonObject.toString().getBytes();
                } catch (Exception e) {
                    e.printStackTrace();
                    return new byte[0];
                }
            }

            public String getBodyContentType() {
                return "application/json";
            }
        };
        RequestQueue queue = Volley.newRequestQueue(this);
        queue.add(request);
    }