Can't collapse the toolbar when swiping up from the toolbar content

[eitand]

Hi,

I have rather big tool bar that holds an image pager (Google Accompanist pager) and the toolbar does not collapsed while swiping up. I tested it on simpler toolbar as well.

[onebone]

Can you clarify what is your expected behavior? Do you mean that when scrolling the main content, the toolbar does not get collapsed until the pager (VerticalPager?) hits the bottom?

[eitand]

Hi, Sorry for the late response.

I have a screen with a collapsing toolbar and a list, when i try to scroll up and the gesture start from within the toolbar it self. its not collapsing.

I finally managed to proxy the event by using this code:

 CollapsingToolbarScaffold(
        modifier = Modifier
            .fillMaxSize()
            .scrollable(
                orientation = Orientation.Vertical,
                // allow to scroll from within the toolbar
                state = rememberScrollableState { delta ->
                    collapsingToolbarState.toolbarState.dispatchRawDelta(delta)
                    delta
                }
            ),
        state = collapsingToolbarState,
        .
        .
        .

[onebone]

I have confirmed that the Android's CollapsingToolbarLayout consumes scrolling gestures from toolbar. Thank you for reporting!

[JackieHou]

I have a way to deal with it temporarily

toolbarModifier = Modifier.verticalScroll(rememberScrollState())

CollapsingToolbarScaffold(
		modifier = Modifier.fillMaxSize(),
		state = rememberCollapsingToolbarScaffoldState(),
		toolbarModifier = Modifier.verticalScroll(rememberScrollState()),
		scrollStrategy = ScrollStrategy.ExitUntilCollapsed,
		toolbar = {
			// toolbar contents...
		}
	) {
		// body contents...
	}

Like this, slide the toolbar and the NestedScrollConnection can receive events