android - Firebase childEventListener return value when path does not exist

Question

Reading the documentation, It seems childEventListener does not fire when the path does not exist.

This is a problem since I want to display a message to the user that there is no data.

I could add a valueEventListener like in this answer but I'm limiting the query to the latest value i.e query.limitToLast() and a valueEventListener doesn't limitTolast but gets all the data in the path.

Example, I have:

posts
{
    $userid
    {
        $postid {
            post_content:content
            timestamp:1234567
        }
        $postid {
            post_content:content
            timestamp:1234567
        }
        $postid {
            post_content:content
            timestamp:1234567
        }
        $postid {
            post_content:content
            timestamp:1234567
        }
    }
}

I'm only interested in the latest post so I do firebaseRef.child(users).child(userid).limitToLast(1).addChildEventListener but the user might not have posts yet and childEventListener does not fire in that case.

Answer 1

Waitting for answers