Current scroll offset inside a Flutter ListView, SliverList,etc

Question

How do I get the current scroll offset inside a Flutter ListView, SliverList, etc?

Answer 1

For someone else, looking for code implementation, you can use ScrollController like this:

ScrollController _scrollController;

@override
void initState() {
  super.initState();
  _scrollController = ScrollController()
    ..addListener(() {
      print("offset = ${_scrollController.offset}");
  });
}

@override
Widget build(BuildContext context) {
  return ListView(
    controller: _scrollController, 
    children: [],
  );
}

@override
void dispose() {
  _scrollController.dispose(); // it is a good practice to dispose the controller
  super.dispose();
}