Flex - Using the vanilla preloader to load additional assets?

I have a Flex appl开发者_JAVA技巧ication that automatically loads the SWF and it's contents and displays the default progress bar like in all Flex apps. Currently I have a class in the application using a Loader instance to load an external bitmap to be added to the stage/canvas. I'd like to handle the loading of this bitmap in the Flex default preloader and get rid of the Loader instance entirely.

How can I do this?

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You'll need to create your own implementation of mx.preloaders.DownloadProgressBar and set it as the preloader in your main application file.

<mx:Application ... preloader="com.domain.MyCustomPreloader"/>