# JakeWharton/NineOldAndroids

[DEPRECATED] Android library for using the Honeycomb animation API on all versions of the platform back to 1.0!

Repository: https://github.com/JakeWharton/NineOldAndroids
Canonical: https://ross.abutalabs.com/products/nineoldandroids
Homepage: http://nineoldandroids.com
Language: Java
License: Apache-2.0
License Family: permissive
Archived: true
Last push: 2016-04-23T04:31:21+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5382, "days_push": 3784, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4461, forks 1519 (observed 2026-08-28T04:08:50.729714+00:00)

## What it is
A deprecated Android library that backports the Honeycomb (Android 3.0) view animation API to Android versions as old as 1.0. It provides the same API surface as the platform animation classes, requiring only a change of imports.

## Use cases
- animate views on Android versions before 3.0
- use property animation APIs on old Android devices
- backport Honeycomb animation API to legacy apps
- support animations on Android 1.0 through 2.x
- maintain an old Android app that still uses NineOldAndroids

## When to choose
- you are maintaining a legacy Android app that already depends on it
- you must support Android versions below 3.0 with the Honeycomb animation API

## When to avoid
- starting any new Android project (use the platform animation API with minSdkVersion 14+)
- your app targets only Android 3.0 or higher
- you need LayoutTransition, which cannot be backported pre-3.0

## Facets
- artifact type: library
- maturity: abandoned
- function: animation
- domain: mobile-development, android-tools
- platform: jvm
- tags: android, animation, backport, deprecated, honeycomb, view-animation, mobile

## Member repositories
- JakeWharton/NineOldAndroids (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:50.729714+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:20:41.783661+00:00, confidence not recorded.
  - readme: https://github.com/JakeWharton/NineOldAndroids (fetched 2026-08-28T04:08:50.729714+00:00, sha 35f256ad5fc3)
  - homepage: http://nineoldandroids.com (fetched 2026-08-29T09:07:22.778574+00:00, sha 5457e76b08ed)
- Data as of 2026-08-30T08:39:29.467469+00:00.