# harjot-oberai/Croller

A circular seekbar for Android, with a control knob! (for the lack of a better word).

Repository: https://github.com/harjot-oberai/Croller
Canonical: https://ross.abutalabs.com/products/croller
Language: Java
License: MIT
License Family: permissive
Topics: circular, seekbar, andorid, custom-view
Last push: 2020-06-13T10:18:01+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": 3686, "days_push": 2272, "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 1239, forks 163 (observed 2026-08-28T04:04:06.042761+00:00)

## What it is
Croller is an Android custom view library that provides a circular seekbar with a control knob, written in Java. It supports continuous and discrete progress modes, customizable colors and attributes, and seekbar-like change listeners.

## Use cases
- add a circular progress knob to an Android app
- replace a standard seekbar with a rotary dial control
- let users pick a value by rotating a circular control
- build volume or brightness controls with a knob UI
- customize colors and rotation direction of a circular slider

## When to choose
- you need a circular/rotary input control in an Android app
- you want a drop-in custom view configurable via XML attributes
- you need seekbar-style start/stop tracking callbacks on a circular control

## When to avoid
- you need a standard linear seekbar
- your project is Kotlin-first and you want a Kotlin-native library
- you need a actively maintained library with recent releases

## Facets
- artifact type: library
- maturity: maintenance
- function: ui-components, animation
- domain: mobile-development, android-tools, web-development
- platform: -
- tags: circular-seekbar, custom-view, android-ui, java, knob-control, android

## Member repositories
- harjot-oberai/Croller (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:06.042761+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 2026-08-30T05:09:57.765715+00:00, confidence not recorded.
  - readme: https://github.com/harjot-oberai/Croller (fetched 2026-08-28T04:04:06.042761+00:00, sha e0c030286708)
- Data as of 2026-08-30T08:39:29.467469+00:00.