While working with a `LazyColumn` with a `VerticalScrollBar`, i’m using `rememberScrollbarAdapter` a...

# compose-desktop

[samuel]

While working with a LazyColumn with a VerticalScrollBar, i’m using
rememberScrollbarAdapter as the adapter and it requires averageItemSize . I could imagine this works fine when the items are expected to be the same size. How do i handle the case when items might not be the same size. Is there an alternative i might have missed?

[Chris Sinco [G]]

This is still an open issue: https://github.com/JetBrains/compose-jb/issues/181 I had a similar question. the workaround mentioned sorta worked though I’m still having issues with the scrollbar not being able to scroll up properly with drag-and-drop

[Chris Sinco [G]]

Though my issue was with stickyHeader which is experimental, but can cause the issue of the averageItemSize not being uniform

[samuel]

I also have the exact same usecase and behaviour you have, the CustomScrollAdapter worked perfect with the mouse wheel though, thanks 🙏

[Chris Sinco [G]]

Yeah mouse wheel worked fine. But I want the dragging to work at some point

[Dominaezzz]

You're welcome. 😛🙂

[samuel]

Yeah i would also like the dragging to work, one thing i noticed that seems to cause this “resistance” behaviour, is that the averageItemSize has a relatively big change once the first item in the list(below the sticky header) gets to the top of the sticky header (happens while scrolling). This seems to cause the scroll bar to change its height, atleast in my case. Once the height has been changed, there is no more “resistance”. thanks Dominic btw 😄

[Yan Pujante]

In regards to the averageItemSize issue, I fixed mine by not using a LazyColumn for now. If I end up bumping into performance issue I will split into multiple "pages". In my case I have a list of cards that can be individually expanded and so it is a total mess with LazyColumn and scrollbar...

[Chris Sinco [G]]

Yeah I may try that with some paging. Currently, the amount of items I have are in the thousands so I think Column would break down there. But I don’t do any paging on the data structure