server

 public void checklogin(View view) {

        // Get text from username and passord field
        final String username = id.getText().toString();
        final String password = pwd.getText().toString();
        if (username.length()==0){
            status.setText("Please enter userid");
        }
        else if(password.length()==0){
            status.setText("Please enter password");
        }
        else {
            StringRequest stringRequest = new StringRequest(Request.Method.POST, REGISTER_URL,
                    new Response.Listener<String>() {
                        @Override
                        public void onResponse(String response) {
                            status.setText(response+"ss");
                        }
                    },
                    new Response.ErrorListener() {
                        @Override
                        public void onErrorResponse(VolleyError error) {
                            status.setText(error.toString());
                        }
                    }){
                @Override
                protected Map<String,String> getParams(){
                    Map<String,String> params = new HashMap<String, String>();
                    params.put("id",username);
                    params.put("pwd",password);
                    return params;
                }

            };

            RequestQueue requestQueue = Volley.newRequestQueue(MainActivity.this);
            requestQueue.add(stringRequest);
        }
    }