http://nineoldandroids.com/

[nilab]

NineOldAndroids : "Android library for using the Honeycomb (Android 3.0) animation API on all versions of the platform back to 1.0! Animation prior to Honeycomb was very limited in what it could accomplish so in Android 3.x a new API was written."

[re_shikajiro]

3.0のanimationAPIをそれ未満のversionで利用する

[idiottiger]

programming

[ytRino]

"Android library for using the Honeycomb (Android 3.0) animation API on all versions of the platform back to 1.0!"