import fl.controls not found in an ActionScript mobile project

[VansFannel]

I'm developing an Android application using only ActionScript 3.0 (I'm not using Flex).

When I try to import fl.controls Flash Builder 4.5.1 complains: the import couldn't be found.

What's the problem?

[PipFinesse1]

I have a similar problem

I'm trying to import an FXG directly into an Actionscript class which works fine in non-mobile projects but causes compile errors in a  mobile project because it relies on SPARK

[VansFannel]

I think fl.controls isn't available on Flash Builder.