This is the second part of a series of posts detailing the migration of a Flex 3 AIR 2.0 application to Flex 4. In this post we’ll start converting old MX components to the new Spark components architecture. Converting Flex 3 Microphone application to Flex 4Original Source Files Flex 4 files as Flash Builder 4 project (.fxp) Part 1 Part 2 (this post) Part 3High Level – The Before and After of this Post in Code Before just talking...

For AIR 2.0 release on labs.adobe.com I created a Microphone Example application showcasing the new feature that allows access to raw microphone data in Flash Player 10.1 and AIR 2.0. This application is a custom chrome AIR application that uses a lot of CSS and embedding of assets, both fonts and images. I figured it would be a good use case for migrating from Flex 3 mx components to Flex 4′s Spark components. As there is a bit to cover...