Hi guys, I have a question about `nestedScroll` t...

# compose

[Alex Bieliaiev]

Hi guys, I have a question about nestedScroll thing. So I have a ModalBottomSheetLayout and a vertically scrollable column within that bottom sheet. ModalBottomSheetLayout participates in the nested scrolling (please see PreUpPostDownNestedScrollConnection). As far, as I understand the logic, ModalBottomSheetLayout consumes entire scroll delta through the onPreScroll , so the actual scroll target (the child column) doesn't receive any delta at all. This results into the bottom sheet being dragged vertically instead of the column being scrolled. Any suggestions?

[Albert Chang]

When the bottom sheet is fully expanded, its children should start to scroll. What is your problem?

[Alex Bieliaiev]

I think I described my problem in the initial message. What's unclear about it?

[Albert Chang]

This results into the bottom sheet being dragged vertically instead of the column being scrolled.

If you mean before the bottom sheet is fully expanded, then this is the intended behavior.

[Alex Bieliaiev]

No, the bottom sheet is fully expanded. Now I try to scroll the child column, but bottom sheet intercepts the scrolling.

[Albert Chang]

Bottom sheet only consumes delta it can consume. See here.

[Albert Chang]

If you post your code we can check.

[Alex Bieliaiev]

Works fine in a standalone setup

[Alex Bieliaiev]

Yes, probably I messed something up in my implementation

[Alex Bieliaiev]

Yes, it's my fault in the end. https://kotlinlang.slack.com/archives/CJLTWPH7S/p1614768328100000?thread_ts=1614530232.195400&cid=CJLTWPH7S resulted in the SwipeableState.processNewAnchors being cancelled, so the last three lines are not executed. Then the bounds of a bottom sheet are incorrect.