flutter ListView scroll to index not available

Question

What I needed:

I want to scroll a list by some index, how can i do that.

What I know:

scrollToIndex sh

Answer 1

ScrollablePositionedList can be used for this. https://github.com/google/flutter.widgets/tree/master/packages/scrollable_positioned_list

Pub link - https://pub.dev/packages/scrollable_positioned_list

final ItemScrollController itemScrollController = ItemScrollController();
final ItemPositionsListener itemPositionListener = ItemPositionsListener.create();

ScrollablePositionedList.builder(
  itemCount: 500,
  itemBuilder: (context, index) => Text('Item $index'),
  itemScrollController: itemScrollController,
  itemPositionsListener: itemPositionListener,
);

One then can scroll to a particular item with:

itemScrollController.scrollTo(
  index: 150,
  duration: Duration(seconds: 2),
  curve: Curves.easeInOutCubic);