This morning, someone asked me how to figure out what version of the SDK and/or AIR runtime you’re using. Rather than just respond to the email, I figured I would blog it for everyone to see.
Here are two easy ways to see the AIR runtime version you’re using:
- Check the "AIR SDK Readme.txt" file in your SDK directory (the version is at the top).
- Trace out
NativeApplication.nativeApplication.runtimeVersion.
Remember that you don’t want to check the runtime version to see if certain capabilities, features, or APIs exist — rather, you want to use an individual feature’s’ "isSupported" flag. But for debugging purposes, knowing your runtime version programmatically can sometimes be useful.

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There’s an app for that… Hmm… I think I’ve heard that before
Check out http://knomedia.com/blog/2009/12/10/adobe-air-version-checker/