How to keep the scrolling position when adding a new elements in the top using ListView or CustomScrollView in Flutter

Question

Is it possible to add new elements into the top of the ListVeiw or CustomScrollView and keep the scroll position as it's with Flutter

I've tried the following

extentAfter = _scrollController.position.extentAfter;
_scrollController.jumpTo(_scrollController.position.maxScrollExtent - extentAfter);

but this won't work well with SliverAppBar - floating and its actually not optimal solution.

score 2 · Accepted Answer · answered Jun 03 '20 at 21:20

2

Actually the cleanest way would be to add those items only when user scrolls back to the top of the ListView. You can cache them in memory for the moment user is far enough from the top (in your case) of the list.

answered Jun 03 '20 at 21:20

Tolga Kartal

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Thank you so much, if (_scrollController.position.pixels == 0.0) { //toDo } – L.kifa Jun 04 '20 at 01:41
I don't understand this.. could you kindly add a code example or any better implementation? – Alex Amatobi Jul 07 '23 at 12:15

How to keep the scrolling position when adding a new elements in the top using ListView or CustomScrollView in Flutter

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