# xmuSistone/ViewpagerTransition

viewpager with parallax pages, together with vertical sliding (or click) and activity transition

Repository: https://github.com/xmuSistone/ViewpagerTransition
Canonical: https://ross.abutalabs.com/products/viewpagertransition
Language: Java
License Family: other
Topics: viewpager, transition, parallax, transformer
Last push: 2017-05-03T07:30:28+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": 3635, "days_push": 3409, "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 3019, forks 502 (observed 2026-08-28T04:07:38.439839+00:00)

## What it is
An Android demo library showing a ViewPager with parallax page effects, vertical sliding via ViewDragHelper, and activity transitions on Android 5.0+. It is a sample project demonstrating custom PagerTransformer techniques.

## Use cases
- add parallax effects to an Android ViewPager
- implement vertical swipe-to-dismiss inside ViewPager pages
- create smooth activity transition animations on Android
- learn how to write a custom ViewPager.PageTransformer
- build card-style horizontally scrolling pages with animations

## When to choose
- you want a reference implementation of parallax ViewPager and activity transition effects in Java
- you need example code for ViewDragHelper-based vertical sliding in a fragment

## When to avoid
- you need a maintained library with a license file, releases, or support for modern Android
- you want a production-ready dependency rather than a demo sample
- you work in Kotlin with Jetpack Compose

## Facets
- artifact type: library
- maturity: abandoned
- function: animation, ui-components, mobile-framework
- domain: mobile-development, frontend, web-design
- platform: jvm
- tags: viewpager, parallax, activity-transition, android-ui, demo-app, android, mobile

## Member repositories
- xmuSistone/ViewpagerTransition (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:38.439839+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 2026-08-30T07:30:02.118083+00:00, confidence not recorded.
  - readme: https://github.com/xmuSistone/ViewpagerTransition (fetched 2026-08-28T04:07:38.439839+00:00, sha 26a695302613)
- Data as of 2026-08-30T08:39:29.467469+00:00.