private void getOrderID() {

    for (int i = 0; i < userID.size(); i++) {
        databaseReference.child(opearatorID).child(userID.get(i)).addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                for (DataSnapshot childSnapshot : dataSnapshot.getChildren()) {
                    keyStatusRelation.put(childSnapshot.getKey(),childSnapshot.getValue(Order.class).getStatus());
                }
                loadData();

            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {

            }
        });

    }

}