manpreet Best Answer 2 years ago

Having trouble receiving new data from firebase?

I am running my app and adding a new child to firebase, online you can see all the child's values, but the data snapshot only gets the first value of the new child added.

we tried reading the child values each one separately, but it seems like the data snapshot doesn't even know they exist.

public static void NotifyToTripList(final NotifyDataChange<List<Trip>> notifyDataChange) {
    if (notifyDataChange != null) {
        if (tripRefChildEventListener != null) {
            notifyDataChange.onFailure(new Exception("first unNotify trip list"));
            return;
        }

        tripList.clear();
        tripRefChildEventListener = new ChildEventListener() {
            @override
            public void onChildAdded(DataSnapshot dataSnapshot, String s) {                   
                Trip t=new Trip();
                t.setTripID(dataSnapshot.getKey());
                if(dataSnapshot.child("DriverID").getValue()!=null) t.setDriverID(Long.parseLong(dataSnapshot.child("DriverID").getValue().toString()));
                else t.setDriverID(0L);
                t.setDestination(dataSnapshot.child("Destination").getValue().toString());
                t.setCurrentLocation(dataSnapshot.child("CurrentLocation").getValue().toString());
                t.setPassengerEmail(dataSnapshot.child("PassengerEmail").getValue().toString());
                t.setPassengerNumber(dataSnapshot.child("PassengerNumber").getValue().toString());
                t.setPassengerName(dataSnapshot.child("PassengerName").getValue().toString());
                SimpleDateFormat format = new SimpleDateFormat("HH:mm"); 
                tripList.add(t);
                notifyDataChange.OnDataChanged(tripList);
        }
    }
}

the code from the main menu:

FireBaseDataBase.NotifyToTripList(new FireBaseDataBase.NotifyDataChange<List<Trip>>() {
    
                                                

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