Firebase ile düğümün altındaki verileri alma | Firebase/android how get children keys and values

Firebase ile belirtilen düğümün altındaki veri alma örneğidir. Alınan bu verileri key-value çifti halinde elde ediyoruz.

refdb.child("users").addValueEventListener(new ValueEventListener() {
    @Override
    public void onDataChange(DataSnapshot dataSnapshot) {

        for(DataSnapshot uniqueKeySnapshot : dataSnapshot.getChildren()){
            //Loop 1 to go through all the child nodes of users
            for(DataSnapshot booksSnapshot : uniqueKey.child("Books").getChildren()){
            //loop 2 to go through all the child nodes of books node
                String bookskey = booksSnapshot.getKey();
                String booksValue = booksSnapshot.getValue();
            }
        }
    }

    @Override
    public void onCancelled(DatabaseError databaseError) {

    }
}

 

Source : https://stackoverflow.com/questions/47097787/firebase-android-how-get-children-keys-and-values