litho-widget-kotlin/com.facebook.litho.widget.collection/CollectionGroupSectionSpec/onViewportChanged

onViewportChanged

@JvmStatic
fun onViewportChanged(c: SectionContext, firstVisibleIndex: Int, lastVisibleIndex: Int, totalCount: Int, firstFullyVisibleIndex: Int, lastFullyVisibleIndex: Int, onViewportChanged: OnViewportChanged?)