Question

Is there any way to detect whether a list is scrolling or not,likelist.isScrolling

Answer 1

So, @Khaled showed a way to do it with the MX component. If you are using the Spark component, that event doesn’t work. Instead, you can listen to changes on myList.scroller.viewport.verticalScrollPosition or horizontalScrollPosition.

<fx:Declarations>
    <fx:int id="scrollingCount" />
</fx:Declarations>

<s:initialize>
    BindingUtils.bindSetter(function(x:*):void { scrollingCount++; }, myList.scroller.viewport, "verticalScrollPosition");
</s:initialize>

<s:VGroup>
    <s:Label text="Scrolling: {scrollingCount}" />
    <s:List id="myList" height="200" dataProvider="{myData}" />
</s:VGroup>

In neither of these cases do you get to know when the list stops getting scrolled (I’m not sure if you want it or not). You might have to set a timer and any time the timer goes off without any scrolling events, you are no longer scrolling?

Unfortunately, you haven’t explained what you are trying to accomplish, wo we can’t adequately answer your question.