flex - How to keep a list from scrolling on dataProvider refresh/update/change? -


i have simple list , background refresh protocol.

when list scrolled down, refresh scrolls top. want stop this.

i have tried catching collection_change event , 

validatenow();   //  try component reset new data  list.ensureindexisvisible(previousindex);    //  actually, search previous data id in ilist, that's not important

this fails because list resets after change (in datagroup.commitproperties).

i hate use timer, enter_frame, or calllater(), cannot seem figure out way.

the other alternatives can see sub-classing list can catch dataproviderchanged event datagroup in skin throwing.

any ideas?

i ll try explain approach...if still unsure let me know , ll give source code well.

1) create variable store current scroll position of viewport. 2) add event listener event.change , mouseevent.mouse_wheel on scroller , update variable created in step 1 current scroll position; 3) add event listener on viewport flexevent.updatecomplete , set scroll position variable stored.

in nutshell, doing have scroll position stored in variable every time user interacts , when our viewport updated (due dataprovider change) set scroll position have stored in variable.


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