Using loading bar again and again..

Question

1)I am loading large no of data in Flex application.
2)Now since application was getting heavy I am only loading
first 32 records at a time. (Just like paging ).
3)When I apply filter on the ArrayCollection(full 1000+
records) which already I have. It returns me some 500 records. Now
when filtering and arranging of the thumbnails is taking place, the
panel looks blank. so I want to show the progressbar there.
4)There I want to add loader or progressbar. I don't know how
to do that.
5)When I tried to show the panel in which I have added
progressbar it simply doesn't show.
Each time I want to show loading progress bar when I apply
the filter.
How can I do that ?
Thanks,

Answer 1

I use the progressbar for my file uploads. I simply add it to
my mxml:
<mx:FormItem label="Progress:" labelWidth="125"
fontWeight="bold">
<mx:ProgressBar id="progressBar" mode="manual" />
</mx:FormItem>
The file upload process shoots off events that tell the
progressbar what to display. The process starts with an open event,
then with various progress events and ends with a complete event.
The actionscript for the various events is show below:
private function OpenEvent(event:Event):void {
progressBar.setProgress(0, 100);
progressBar.label = "Loading 0%";
private function progressEvent(event:ProgressEvent):void {
progressBar.setProgress(event.bytesLoaded,
event.bytesTotal);
private function completeEvent(event:Event):void {
progressBar.label = "Complete.";
I'm not sure if there is a way to monitor the process of your
filter, but if there is, you can substitute the (event.bytesLoaded,
event.bytesTotal) with (recordsFiltered, recordsTotal).
I believe that is the gist of it.
There is, as always, the handy, dandy language reference (
http://livedocs.macromedia.com/flex/2/langref/index.html)
for that detailed info and even some more examples.
--Andy