Get last node in Firebase database Android

Question

I want to get item in the last node added in firebase database from my Android. You can see on the image below i\'m not sure how to get the specific node, because unique key

Answer 1

Try this:

DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference();
Query lastQuery = databaseReference.child("mp").orderByKey().limitToLast(1);
lastQuery.addListenerForSingleValueEvent(new ValueEventListener() {
    @Override
    public void onDataChange(DataSnapshot dataSnapshot) {
        String message = dataSnapshot.child("message").getValue().toString();
    }

    @Override
    public void onCancelled(DatabaseError databaseError) {
        // Handle possible errors.
    }
});

Hope this helps!