db.collection("Reminder").get()
            .addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
                @Override
                public void onSuccess(QuerySnapshot queryDocumentSnapshots) {
                    if (!queryDocumentSnapshots.isEmpty()) {
                        List<DocumentSnapshot> list = queryDocumentSnapshots.getDocuments();

                        for (DocumentSnapshot d : list) {
                            dbReminder p = d.toObject(dbReminder.class);
                            p.setId(d.getId());
                            remtasklist.add(p);
                        }
                        adapter.notifyDataSetChanged();

                    }
                }
            });