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Android Bird’s of a Feather Meeting

Learn about the basic intro of Android, its interesting features, and how to collaborate in the embedded Linux community. Join this meeting with Tim Bird, the CELF Architecture Group Chair, to discuss and ask questions.

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Android Bird’s of a Feather Meeting

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  1. Android Bird’s of a Feather Meeting Tim Bird CELF Architecture Group Chair

  2. Agenda Android - basic intro Hot or Not Questions How to collaborate References 2

  3. Android – Basic Intro

  4. Android – Basic Intro • Android • Linux-based OS mainly developed by Google, now deployed in mobile phones worldwide • Is a new platform, not based on any existing Linux distribution • Kernel + Google stuff • Bionic libc • Dalvik JVM • Class libs galore 4

  5. What interesting features of Android should we adopt as an embedded Linux community? Hot or Not?

  6. Kernel stuff • Binder – new IPC mechanisms • Wake locks – ability to hold the machine “awake” • Turns power management on it’s head • Default state of machine is off, and apps have to assert a lock to keep it awake • amem 6

  7. User-space • Init • New • Bionic • Small footprint, custom-purpose, C library • Has it’s own threading model • No support for multi-user • Native libraries • ???

  8. Build system • Repo • Multi-project source management tool • Wrapper for ‘git’ for 100 repositories • Build system (Android makefiles) • Doesn’t build kernel!! • Doesn’t keep patches separate • Pre-built toolchains

  9. Development tools • Adb – Android Debug Bridge • Host/target control program • Emulator • Can develop and test some applications prior to device availability • Eclipse integration • Logger

  10. File system layout • Recovery • System • Data • SDcard

  11. Java • Dalvik

  12. User-space pieces • OpenGL • App Manager • Application lifecycle • Flash support?

  13. Apps • Market • Browser (webkit?) • Maps • YouTube

  14. How to collaborate • Google doesn’t always welcome contributions • Ex: I haven’t signed their license agreement • My suggestion: • Use e-linux wiki for non-Google sanctioned information and patches • Can use existing Google lists, unless google people complain (?)

  15. Questions and Discussion

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