how-to-use-volley-string-request-in-android
StringRequest myReq = new StringRequest(Method.POST,
"http://somesite.com/some_endpoint.php",
createMyReqSuccessListener(),
createMyReqErrorListener()) {
protected Map<String, String> getParams() throws com.android.volley.AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
params.put("param1", num1);
params.put("param2", num2);
return params;
};
};
queue.add(myReq);