I am trying for a while to create a widget that can loop between different widgets on a timed basis, and each of the widgets can have its own time to be shown on the screen. This is how far I got already, only the variable timing cannot be fit into this way of working.

This is an implementation of the State of a StatefulWidget. This works, but all of the widgets (from (widget.sponsorWidgets) are shown the _timeoutValue amount of time, while I want to be able to set the time for each widget individually. Kind of like a kiosk where you show some interesting stuff for 30 seconds, and then show an ad for 2 seconds, to turn back to the interesting widget for another 30 seconds.

I was trying with dart.io sleep method, or with await Future.delayed(const Duration(seconds: 1)); But I dont seem to find the right way to do this. Could anyone assit with this please.

Thanks a lot

late int _selectedListIndex;
late int _counterForNonZeroIndex;
late int _timeoutValue;
late Timer _scrollingThing;
final ItemScrollController horizontalItemScrollController =
    ItemScrollController();
final ItemPositionsListener itemPositionsListener =
    ItemPositionsListener.create();

@override
void initState() {
  _selectedListIndex = 0;
  _counterForNonZeroIndex = 1;
  _timeoutValue = 30;
  super.initState();
  startScroll();
}

@override
void dispose() {
  _scrollingThing.cancel();
  super.dispose();
}

void startScroll() {
  // Autoscrolling listview code
  if (horizontalItemScrollController.isAttached) {
    horizontalItemScrollController.scrollTo(
        index: _selectedListIndex,
        duration: Duration(milliseconds: 300),
        curve: Curves.
easeInOutCubic
);
    if (!mounted) {
      return;
    }
  }
  if (mounted) {
    // For changing the list item that is currently scrolled to
    _scrollingThing =
        Timer.periodic(Duration(seconds: _timeoutValue), (Timer t) {
      if (_selectedListIndex == 0) {
        _counterForNonZeroIndex += 1;
        if (_counterForNonZeroIndex >= widget.sponsorWidgets.length) {
          _counterForNonZeroIndex = 1;
        }
        _selectedListIndex = _counterForNonZeroIndex;
      } else {
        _timeoutValue = 5;
        _selectedListIndex = 0;
      }

      setState(() {
        horizontalItemScrollController.jumpTo(
          index: _selectedListIndex,
        );
      });
    });
  }
}
``