问如果Firebase表包含来自更多应用程序认证用户的数据，我如何迭代该表？

EN

DatabaseReference rootRef = FirebaseDatabase.getInstance().getReference();
DatabaseReference reviewsRef = rootRef.child("reviews");
ValueEventListener valueEventListener = new ValueEventListener() {
    @Override
    public void onDataChange(DataSnapshot dataSnapshot) {
        for(DataSnapshot uidSnapshot : dataSnapshot.getChildren()) {
            for(DataSnapshot reviewSnapshot : uidSnapshot.getChildren()) {
                String comment = reviewSnapshot.child("comment").getValue(String.class);
                Log.d("TAG", comment);
            }
        }
    }

    @Override
    public void onCancelled(@NonNull DatabaseError databaseError) {
        Log.d("TAG", databaseError.getMessage()); //Don't ignore errors!
    }
};
reviewsRef.addListenerForSingleValueEvent(valueEventListener);

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Hi

Review review = reviewSnapshot.getValue(Review.class);
Log.d("TAG", review.getComment());