Ruby on Android
summary
JRuby runs on Android via a stack of projects: JRuby on Android, mirror/mira (optional typing) and pinda (packager). The demo shows a small multi-screen app with buttons, deployed to a real device as an APK ~228 KB, with deploys much faster than full JRuby builds but a long first-run startup. Dalvik breaks heavy Java reflection so mirror uses macros to generate efficient code and pinda handles R generation and resources; testing is claimed trivial.
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chapters (7)
- 0:00Start
- 5:40Third Party Apps
- 8:46Android Debug Bridge
- 12:38Activities
- 13:27Broadcast Receivers
- 13:59Content Providers
- 21:09Global Variables








