# BCsl/GalleryLayoutManager

New way to implements ViewPager/Gallery in Android with RecycleView

Repository: https://github.com/BCsl/GalleryLayoutManager
Canonical: https://ross.abutalabs.com/products/gallerylayoutmanager
Language: Java
License: Apache-2.0
License Family: permissive
Topics: layoutmanager, recyclerview, gallery, viewpager
Last push: 2022-08-23T03:25:22+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": 3548, "days_push": 1471, "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 1010, forks 145 (observed 2026-08-28T04:03:12.917326+00:00)

## What it is
An Android library providing a custom RecyclerView LayoutManager that implements ViewPager/Gallery-style center-locked scrolling with horizontal or vertical orientation. It supports item recycling, selection change callbacks, and ViewPager-like ItemTransformer animations.

## Use cases
- implement a ViewPager-like pager using RecyclerView
- build a center-locked image gallery in Android
- add scale/transform animations to RecyclerView items like ViewPager PageTransformer
- listen for item selection changes during scroll or fling
- create a vertically scrolling carousel in Android
- recycle views efficiently in a gallery-style list

## When to choose
- you need a gallery or pager UI backed by RecyclerView with view recycling
- you want horizontal or vertical center-locked scrolling with item transformers
- you need selection callbacks including during fling

## When to avoid
- you use Jetpack Compose rather than RecyclerView
- you need a standard linear or grid layout
- you need an actively maintained library with recent updates

## Facets
- artifact type: library
- maturity: maintenance
- function: ui-components, animation
- domain: mobile-development, android-tools, frontend
- platform: jvm
- tags: recyclerview, layoutmanager, viewpager, gallery, item-transformer, center-locked-scrolling, android, mobile

## Member repositories
- BCsl/GalleryLayoutManager (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:12.917326+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 2026-08-30T07:11:54.131122+00:00, confidence not recorded.
  - readme: https://github.com/BCsl/GalleryLayoutManager (fetched 2026-08-28T04:03:12.917326+00:00, sha 4572747de72d)
- Data as of 2026-08-30T08:39:29.467469+00:00.