# ToDou/appbarlayout-spring-behavior

One Behavior help AppBarLayout to scroll spring

Repository: https://github.com/ToDou/appbarlayout-spring-behavior
Canonical: https://ross.abutalabs.com/products/appbarlayout-spring-behavior
Language: Java
License Family: other
Last push: 2019-05-31T02:20:11+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3611, "days_push": 2652, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1177, forks 155 (observed 2026-08-28T04:03:52.740806+00:00)

## What it is
An Android library providing a custom CoordinatorLayout Behavior that gives AppBarLayout a springy, bouncy scroll effect. It also includes a TabScrimHelper for animating TabLayout colors alongside CollapsingToolbarLayout and optional realtime blur integration.

## Use cases
- add spring bounce effect to AppBarLayout scrolling in Android
- animate TabLayout color with collapsing toolbar
- apply realtime blur to collapsing app bar
- customize CoordinatorLayout behavior for app bar
- make Android app bar scroll feel elastic

## When to choose
- you want a spring/overscroll effect on AppBarLayout without reimplementing Behavior internals
- you use AndroidX or support design libraries and need a drop-in layout_behavior
- you want coordinated blur or tab color animation with app bar offset

## When to avoid
- you use Jetpack Compose instead of View-based CoordinatorLayout
- you need a maintained library with active support or a clear license file
- your project no longer uses support design/AndroidX AppBarLayout

## Facets
- artifact type: library
- maturity: maintenance
- function: ui-components, animation
- domain: mobile-development, android-tools, frontend
- platform: jvm
- tags: android, appbarlayout, coordinatorlayout-behavior, spring-scroll, material-design, realtime-blur, tablayout, mobile

## Member repositories
- ToDou/appbarlayout-spring-behavior (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:52.740806+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 2026-08-30T06:26:11.082187+00:00, confidence not recorded.
  - readme: https://github.com/ToDou/appbarlayout-spring-behavior (fetched 2026-08-28T04:03:52.740806+00:00, sha 51a50c8e8448)
- Data as of 2026-08-30T08:39:29.467469+00:00.