VerticalScroller no longer has

onScrolledPositionChanged

, was it removed on purpose?

The

ScrollerPosition

object that it accepts as a parameter is an

@Model

object, so its

value

property is observable for the current scroll position

Partial reason why it was removed: animation inside (smoothScrollTo, fling after scroll) couldn't guarantee consistency if you do something more fancy like

onScrolledPositionChanged = { newValue ->  scrollPosition.value = calcMyCustomParallaxDelta(newValue) }

Above will work for dragging, but won't for fling/smoothScrolling. So we decide to remove inconsistency, while leaving ability to observe (just read scrollPosition.value, as Adam suggested) and explore more 🙂

if it's a

@Model

, won't it have a massive impact on the performance? also, I could figure stuff out myself but I can't donwload sources, is it even possible?

It probably will impact performance now, yes. But in this case, it's on us to fix performance, and to provide APIs that won't give false promises