private void childEventListenerRecycler()

in database/app/src/main/java/com/google/firebase/referencecode/database/QueryActivity.java [185:243]
34 lines of code
1 McCabe index (conditional complexity)

    private void childEventListenerRecycler() {
        final Context mContext = this;
        // [START child_event_listener_recycler]
        ChildEventListener childEventListener = new ChildEventListener() {
            @Override
            public void onChildAdded(DataSnapshot dataSnapshot, String previousChildName) {
                Log.d(TAG, "onChildAdded:" + dataSnapshot.getKey());

                // A new comment has been added, add it to the displayed list
                Comment comment = dataSnapshot.getValue(Comment.class);

                // ...
            }

            @Override
            public void onChildChanged(DataSnapshot dataSnapshot, String previousChildName) {
                Log.d(TAG, "onChildChanged:" + dataSnapshot.getKey());

                // A comment has changed, use the key to determine if we are displaying this
                // comment and if so displayed the changed comment.
                Comment newComment = dataSnapshot.getValue(Comment.class);
                String commentKey = dataSnapshot.getKey();

                // ...
            }

            @Override
            public void onChildRemoved(DataSnapshot dataSnapshot) {
                Log.d(TAG, "onChildRemoved:" + dataSnapshot.getKey());

                // A comment has changed, use the key to determine if we are displaying this
                // comment and if so remove it.
                String commentKey = dataSnapshot.getKey();

                // ...
            }

            @Override
            public void onChildMoved(DataSnapshot dataSnapshot, String previousChildName) {
                Log.d(TAG, "onChildMoved:" + dataSnapshot.getKey());

                // A comment has changed position, use the key to determine if we are
                // displaying this comment and if so move it.
                Comment movedComment = dataSnapshot.getValue(Comment.class);
                String commentKey = dataSnapshot.getKey();

                // ...
            }

            @Override
            public void onCancelled(DatabaseError databaseError) {
                Log.w(TAG, "postComments:onCancelled", databaseError.toException());
                Toast.makeText(mContext, "Failed to load comments.",
                        Toast.LENGTH_SHORT).show();
            }
        };
        databaseReference.addChildEventListener(childEventListener);
        // [END child_event_listener_recycler]
    }