Port AS3/Flex app to iPhone

I believe Ad开发者_高级运维obe tools like CS5 have ways to output as an iPhone app, but what about a regular AS3 or Flex project? Are there any tools to auto-port, or AS3/Flex iPhone implementations out there?

Out of interest, how does the CS5 thing work? Is it a totally different code-path or something less drastic? For instance Flash supports Shapes and Timelines, etc... do they in fact provide an iPhone Flash runtime of some sort?

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Packager for iPhone is what you should try out: http://labs.adobe.com/technologies/packagerforiphone/

I guess its still a beta, but doesn't hurt in trying. It also has a standalone version (without the need of CS5).

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Actually it is still the flash runtime, the same way that when you export a .exe in the publish settings (not an AIR native EXE, just a projector exe). It grabs the flash VM, and your source code, compiles your source and the flash vm wrapped up together into a single executable. It's just compiled down to ARM. There is still the flash runtime running inside that executable and your bytecode is still being executed against it. So virtualization is still essentially taking place. You're right in saying it's "native" assembly code but it's a far cry from a "native" application.

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Regarding how it works, it is not a Flash runtime, but a way to compile ActionScript to native ARM assembly code, via LLVM.

Edit: also see Jesse Nicholson's answer.