ParseQuery<ParseObject> query = ParseQuery.getQuery("_Mess");
            ParseUser currentUser = ParseUser.getCurrentUser();
            query.whereEqualTo("from", currentUser);
ParseQuery<ParseObject> query1 = ParseQuery.getQuery("_Mess");
            query1.whereEqualTo("to", userId);
            query1.findInBackground(new FindCallback<ParseObject>() {

                @Override
                public void done(List<ParseObject> objects, ParseException e) {

                }
            });