Change Default Preloader

[JonathanBaggott]

Hi there
I would like to change the default preloader that shows when first loading my application.
I have a .FLA file that I would like to use.
Anyone got some steps or tips for me?

Thanks.

[GlaucoMaximo]

Jonathan8209,

You must create a custom preloader in Flash Professional, generate SWC and use it within the FlexViewer extending the SparkDownloadProgressBar class.

read this steps,
Flex 4 Custom Preloader using .FLA file
http://www.leavethatthingalone.com/blog/index.cfm/2009/11/11/Flex4CustomPreloader

Building a custom Flex preloader
http://www.adobe.com/devnet/flex/articles/flex-custom-preloader.html