How to update / update data with Android Volley with MySQL?

I'm new on the subject and new here, I'm showing an excerpt of the code I'm using for testing. The data is usually displayed the first time I query the application, but if a new insert, update, or delete is performed, the data is not updated in the application, the old data remains displayed.

I have developed a more complete application that I develop but I came across this error and I crashed. I tried to clear the cache and turn it off, but no results.

public void LoadWebServices ()
{
progress = new ProgressDialog (this);
progress.setMessage ("Loading ...");
progress.show ();
String url = "https: //meu_endreco/file.php";

jsonObjectReq = new JsonObjectRequest (Request.Method.GET, url, null, this, this);
request.add (jsonObjectReq);

}

@Override
public void onErrorResponse (Error VolleyError)
{
progress.hide (); // closing
Toast.makeText (this, "Error:" + error, Toast.LENGTH_LONG) .show ();
}
@Override
public void onResponse (JSONObject response)
{
progress.hide (); // closing
textView.setText (response.toString ()) // display data
}