# githubwing/ZoomHeader

A demo of animation show how turn viewpager into detail.神交互。模仿饿了么详情页可以跟随手指移动 viewpager变详情页

Repository: https://github.com/githubwing/ZoomHeader
Canonical: https://ross.abutalabs.com/products/zoomheader
Language: Java
License Family: other
Last push: 2016-12-10T09:40:38+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3557, "days_push": 3553, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2469, forks 395 (observed 2026-08-28T04:06:54.629517+00:00)

## What it is
An Android demo project in Java that mimics the Ele.me app's detail page, where a ViewPager smoothly expands into a full detail view that follows the user's finger. It is explicitly a teaching example built with CoordinatorLayout and custom Behavior, not a reusable library.

## Use cases
- implement a viewpager that expands into a detail page on drag
- learn how CoordinatorLayout Behavior works
- recreate the Ele.me detail page interaction
- make an image scale up following finger movement without requestLayout
- understand custom touch gesture handling for header views
- sync RecyclerView scrolling with a collapsing header
- change ViewPager child drawing order for gallery effects

## When to choose
- you want to study the technique behind finger-following viewpager-to-detail transitions
- you need a reference implementation of CoordinatorLayout Behavior-driven animations
- you are learning Android gesture and nested scrolling internals

## When to avoid
- you need a production-ready, drop-in library component
- you want maintained code with a license and recent updates
- your project uses Kotlin or Jetpack Compose
- you need polished edge-case handling, since the author notes details are unfinished

## Facets
- artifact type: learning-resource
- maturity: abandoned
- function: animation, ui-components, state-management
- domain: mobile-development, android-tools, tutorials, web-design
- platform: -
- tags: android-demo, viewpager, coordinatorlayout, behavior, gesture-interaction, detail-page-transition, eleme-clone, java, android, mobile

## Member repositories
- githubwing/ZoomHeader (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:54.629517+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 2026-08-30T02:29:10.430366+00:00, confidence not recorded.
  - readme: https://github.com/githubwing/ZoomHeader (fetched 2026-08-28T04:06:54.629517+00:00, sha c167d6951998)
- Data as of 2026-08-30T08:39:29.467469+00:00.