# daimajia/AnimationEasingFunctions

Android Animation Easing Functions. Let's make animation more real!

Repository: https://github.com/daimajia/AnimationEasingFunctions
Canonical: https://ross.abutalabs.com/products/animationeasingfunctions
Language: Java
License: MIT
License Family: permissive
Topics: easing-functions, animation, android-easing-functions
Last push: 2020-08-24T03:29:49+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4448, "days_push": 2200, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2457, forks 407 (observed 2026-08-28T04:06:53.303737+00:00)

## What it is
An Android library implementing Robert Penner's easing functions for use with Android view animations via a Glider utility. It lets developers apply natural, realistic motion curves (bounce, elastic, sine, etc.) to ObjectAnimator-based animations.

## Use cases
- add bounce easing to android view animations
- make android animations feel more natural
- apply elastic easing curves to objectanimator
- animate views with realistic motion in android app
- use penner easing functions on android
- smooth in-out easing for android ui transitions

## When to choose
- you want realistic easing curves for Android view animations with a simple Glider API
- your app targets Android API 11+ and uses ObjectAnimator-based animations

## When to avoid
- you need physics-based or Compose animation systems
- you are not developing for Android
- you need a library under active development with recent updates

## Facets
- artifact type: library
- maturity: maintenance
- function: animation
- domain: mobile-development, graphics
- platform: jvm
- tags: easing-functions, view-animation, interpolators, android-library, android, mobile

## Member repositories
- daimajia/AnimationEasingFunctions (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:53.303737+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 2026-08-30T02:30:01.816927+00:00, confidence not recorded.
  - readme: https://github.com/daimajia/AnimationEasingFunctions (fetched 2026-08-28T04:06:53.303737+00:00, sha 90800db7614b)
- Data as of 2026-08-30T08:39:29.467469+00:00.