yep there are a few Android apps I've found in searching, usually in beta but they appear to use bitmap output. Autodesk Sketchbook Mobile outputs png and psd, and pdf but I don't think the pdf is illustrator vector version.
A simple line drawing app that does colour fills which translate straight into Flash or Xara for further editing doesn't appear to be available yet. A very basic cut down version of Xara would be my preference. My old Palm app back in 2003 did the trick but back then Palm screens were small and low res. But it worked at the time.

Q