# kaelaela/VerticalViewPager

Vertically ViewPager and vertically transformer for Android.

Repository: https://github.com/kaelaela/VerticalViewPager
Canonical: https://ross.abutalabs.com/products/verticalviewpager
Language: Java
License: Apache-2.0
License Family: permissive
Topics: android, verticalviewpager, viewpager
Archived: true
Last push: 2017-04-14T15:04:47+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3973, "days_push": 3428, "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 1219, forks 205 (observed 2026-08-28T04:04:01.676398+00:00)

## What it is
An Android library that extends ViewPager to support vertical swiping between pages, with built-in vertical page transformers like zoom-out and stack effects. It is written in Java and distributed via Gradle as an AAR dependency.

## Use cases
- add vertical swipe paging to an Android app
- create a vertically scrolling onboarding flow
- apply zoom-out or stack page transition animations
- replace horizontal ViewPager with vertical orientation
- build a photo gallery with vertical page swipes

## When to choose
- you need a drop-in vertical ViewPager for a legacy Java Android project
- you want simple vertical page transformers without writing custom code

## When to avoid
- you use Jetpack Compose or modern ViewPager2, which supports vertical orientation natively
- you need an actively maintained library with recent updates
- you need nested scrolling with RecyclerView or WebView, which is listed as unsupported

## Facets
- artifact type: library
- maturity: abandoned
- function: ui-components, animation
- domain: mobile-development, android-tools
- platform: -
- tags: viewpager, vertical-scrolling, page-transformer, java, android-ui, android, mobile

## Member repositories
- kaelaela/VerticalViewPager (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:01.676398+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 2026-08-30T06:16:13.780661+00:00, confidence not recorded.
  - readme: https://github.com/kaelaela/VerticalViewPager (fetched 2026-08-28T04:04:01.676398+00:00, sha 491347171989)
- Data as of 2026-08-30T08:39:29.467469+00:00.