The July 2011 DalMob Conclave focused on Accessibility in Mobile apps, with a presentation from Doug Russell and Luke Wallace from Bottle Rocket.
Luke’s presentation on Android Accessibility is available as a PDF link below.
Accessibility on Android (PDF)
This presentation was created before Android 4.0, which has made some small changes to how Accessibility is handled, with an option for a “explore-by-touch” mode. More details can be found at the following links:
http://developer.android.com/guide/practices/design/accessibility.html
http://developer.android.com/sdk/android-4.0-highlights.html#DeveloperApis
http://developer.android.com/reference/android/view/accessibility/AccessibilityRecord.html