actually, to be sure, what is the type of your dataprovider Laurence?
Douglas Knudsen http://www.cubicleman.com this is my signature, like it? On Thu, Mar 24, 2011 at 7:39 PM, Vaibhav Seth <[email protected]>wrote: > If you have taken the ArrayCollection as dataprovider, then instead of > refresh, try dispatching collectionchange event. > > > On Thu, Mar 24, 2011 at 7:09 PM, Laurence MacNeill <[email protected] > > wrote: > >> Well, setting the dataProvider to null than back again seems to work... >> >> Of course, if the list hasn't gotten short enough to prevent scrolling, >> the scroll-position is reset back to zero... But that's a simple matter of >> storing the current scroll-position in a variable, then re-setting the >> data-provider, then restoring the scroll-position... Seems to work fine. >> >> But man, what a pain... Why a simple dataprovider.refresh() wouldn't do >> it is just beyond me... >> >> L. >> On Thu, Mar 24, 2011 at 6:50 PM, Vaibhav Seth >> <[email protected]>wrote: >> >>> you can also try dispatching a CollectionChange event on the >>> dataprovider, some time it works this way. >>> So that you can avoid the flickering on the screen for that moment. >>> >>> >>> On Thu, Mar 24, 2011 at 6:47 PM, Laurence MacNeill < >>> [email protected]> wrote: >>> >>>> Oh, and to be clear, I'm not assigning a new data-provider to the List >>>> at any time. I'm simply updating the data in the data-provider, then >>>> calling the .refresh() method on it. >>>> >>>> Perhaps setting my data-provider to null, then back to the real >>>> data-provider would fix it? I'm gonna give that a try, just for kicks. >>>> >>>> L. >>>> >>>> On Thu, Mar 24, 2011 at 6:40 PM, Laurence MacNeill < >>>> [email protected]> wrote: >>>> >>>>> I agree, it *should* take care of the renderer. But it doesn't. Only >>>>> if the item scrolls off the screen then back onto the screen later does it >>>>> show the updates. It simply will not update if the item is on-screen. >>>>> >>>>> Re-sizing works, only if I can manage to re-size it enough to force the >>>>> item not to appear on the screen anymore. Actually, it has to go a bit >>>>> farther -- far enough for the item-renderer to be recycled. It's like the >>>>> data simply is not updated until the item-renderer is recycled. Perhaps >>>>> there's a way to force the item-renderer to be recycled, then? I don't >>>>> know... >>>>> >>>>> L. >>>>> >>>>> On Thu, Mar 24, 2011 at 6:36 PM, Vaibhav Seth < >>>>> [email protected]> wrote: >>>>> >>>>>> If I got you right, when the scroll goes off and you give the List a >>>>>> new dataprovider, the updated data does not reflect in the List ? >>>>>> That seems very strange, as when you are giving the new dataprovider >>>>>> it should take care of the renderer. >>>>>> >>>>>> Did you tried resizing the application when the scroll goes off ? Does >>>>>> the resizing brings back the updated data ? >>>>>> >>>>>> >>>>>> On Thu, Mar 24, 2011 at 6:27 PM, Eric DeCoff <[email protected]>wrote: >>>>>> >>>>>>> Laurence, >>>>>>> >>>>>>> Take a look at my datagrid render itemrender from 4.5 >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> On Thu, Mar 24, 2011 at 5:36 PM, Laurence MacNeill < >>>>>>> [email protected]> wrote: >>>>>>> >>>>>>>> Maybe y'all can help me here... I've been banging my head against >>>>>>>> the wall for hours on this stupid thing, and I can't seem to figure it >>>>>>>> out... >>>>>>>> >>>>>>>> I have a spark Panel which contains a spark List. The List scrolls >>>>>>>> automatically -- no user interaction required, as this is a simple app >>>>>>>> that's just being used on a large display-screen at a convention >>>>>>>> center. >>>>>>>> It's displaying a list of upcoming events, and that list needs to be >>>>>>>> updated >>>>>>>> every so often (you know, if an event has sold out or been cancelled or >>>>>>>> whatever) so I'm updating the data in the List's dataProvider every 3 >>>>>>>> minutes. >>>>>>>> >>>>>>>> As the day goes on, the list gets shorter and shorter -- events that >>>>>>>> are in the past are removed from the dataProvider because the database >>>>>>>> query >>>>>>>> excludes events that started more than 15 minutes ago. >>>>>>>> >>>>>>>> When the list is short enough, there is no more scrolling. There's >>>>>>>> enough room to display all the events without the list automatically >>>>>>>> scrolling. THAT is when the problem occurrs -- the custom >>>>>>>> item-renderer >>>>>>>> stops updating, because it's not scrolling off the screen anymore... >>>>>>>> Even >>>>>>>> though I'm calling the .refresh() method on the List's data-provider, >>>>>>>> it's >>>>>>>> not updating the renderers that are already being rendered on the >>>>>>>> screen. >>>>>>>> >>>>>>>> So. How to I make it update those renderers that are already on the >>>>>>>> screen? I've tried about 20 different suggestions that I found on >>>>>>>> Google (my own custom-written invalidateListDisplay function since a >>>>>>>> Flex 4 >>>>>>>> List doesn't have one, using the List.dataProvider.itemUpdated() >>>>>>>> thingy, >>>>>>>> setting the List's itemRenderer = null then back to the custom >>>>>>>> itemRenderer >>>>>>>> again both with and without a validateNow() call in there, using the >>>>>>>> updateRenderer() method, etc., etc..) I've tried them all, and NOTHING >>>>>>>> has >>>>>>>> worked. >>>>>>>> >>>>>>>> I've really got to get this figured out soon. It's for a live show >>>>>>>> that's happening right now. >>>>>>>> >>>>>>>> Thanks, >>>>>>>> Laurence MacNeill >>>>>>>> Mableton, Georgia, USA >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> Eric R. DeCoff >>>>>>> Changing the world, >>>>>>> 1 line of code at a time >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Thanks, >>>>>> Vaibhav Seth. >>>>>> >>>>>> >>>>> >>>> >>> >>> >>> -- >>> Thanks, >>> Vaibhav Seth. >>> >>> >> > > > -- > Thanks, > Vaibhav Seth. > >
