public void login(UserModel data, final UserLoginCallback onCallBack){
        Map<String, Object> map = new HashMap<>();
        map.put("username", data.getUsername());
        map.put("password", data.getPassword());

        JSONObject jsonObject = new JSONObject(map);
        String bodyRequest = jsonObject.toString();
        Log.d(myTag, this.getClass().getSimpleName()+">> bodyRequest Login : "+bodyRequest);

        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, loginUrl, bodyRequest, new Response.Listener<JSONObject>() {
            @Override
            public void onResponse(JSONObject response) {
                try {
                    String msg = response.getString("message");
                    UserModel userModel = new UserModel();
                    JSONObject jsonObject = response.getJSONObject(KEY_LOGIN_RESPONSE);
                    Log.d(myTag, jsonObject.toString());
                    Log.d(myTag, msg+ " login oey");
                    if(jsonObject.has("name")){
                        String name = jsonObject.getString("name");
                        String username = jsonObject.getString("username");
                        String password = jsonObject.getString("password");
                        int userID = jsonObject.getInt("userID");
                        String role = jsonObject.getString("role");

                        userModel.setUserID(String.valueOf(userID));
                        userModel.setName(name);
                        userModel.setUsername(username);
                        userModel.setPassword(password);
                        userModel.setRole(role);
                        onCallBack.onSuccess(userModel);

                    }
                    else {
                        onCallBack.onFail(msg);
                    }

                } catch (JSONException e) {
                    e.printStackTrace();
                }

            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                Toast.makeText(context, "Login Failed", Toast.LENGTH_LONG).show();
                error.printStackTrace();
                onCallBack.onFail(error.toString());
            }
        });
        jsonObjectRequest.setRetryPolicy(new DefaultRetryPolicy(
                5000,
                DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
                DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
        MySingleton.getInstance(context).addToRequestQueue(jsonObjectRequest,myTag);

    }