Flutter The Scrollbar's ScrollController has no ScrollPosition attached
541
Remove the scrollController entirely and that should fix the problem. that is how I fixed my code so your code should look something like this
class CustomScrollBar extends StatelessWidget {
final Widget child;
const CustomScrollBar({
required this.child,
});
@override
Widget build(BuildContext context) {
return RawScrollbar(
thumbColor: AppColors.gray,
radius: Radius.circular(8),
thickness: 4,
isAlwaysShown: true,
child: child,
);
}
}
and the second part should be like this
child: CustomScrollBar(
child: SingleChildScrollView(
child: Padding(
padding: EdgeInsets.all(7.0.scaled),
child: Container(
width: double.infinity,
child: Text(
'any text bla bla bla \n\n\n this is a lot of \n text \n .'
),
),
),
),
),
Author by
Chris
Updated on December 06, 2022Comments
-
Chris over 1 year
I get this
error
when using theAppBar
:The Scrollbar's ScrollController has no ScrollPosition attached.
This is my
CustomScrollBar
:class CustomScrollBar extends StatelessWidget { final Widget child; final ScrollController scrollController; const CustomScrollBar({ required this.scrollController, required this.child, }); @override Widget build(BuildContext context) { return RawScrollbar( thumbColor: AppColors.gray, radius: Radius.circular(8), thickness: 4, isAlwaysShown: true, controller: scrollController, child: child, ); } }
I should be always visible. And this is how I use it:
child: CustomScrollBar( scrollController: _scrollControllerForScrollBar, child: SingleChildScrollView( controller: _scrollControllerForScrollBar, child: Padding( padding: EdgeInsets.all(7.0.scaled), child: Container( width: double.infinity, child: Text( 'any text bla bla bla \n\n\n this is a lot of \n text \n .' ), ), ), ), ),
As you can see both the
ScrollBar
and theSingleChildScrollView
use the sameScrollController
. I have no idea why this error occurs. Any idea what I am missing here?