# JakeWharton/kotterknife

View "injection" library for Android.

Repository: https://github.com/JakeWharton/kotterknife
Canonical: https://ross.abutalabs.com/products/kotterknife
Language: Kotlin
License: Apache-2.0
License Family: permissive
Archived: true
Last push: 2019-09-12T16:12:45+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": 4335, "days_push": 2547, "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 2205, forks 188 (observed 2026-08-28T04:06:25.976012+00:00)

## What it is
Kotter Knife is a Kotlin library for binding Android views to properties via delegated properties, inspired by ButterKnife. It is explicitly deprecated; the author recommends Android's built-in view binding instead.

## Use cases
- bind android views to kotlin properties
- replace findViewById with delegated properties
- bind views in fragments and viewholders
- optional view binding in kotlin
- bind a list of views in android

## When to choose
- maintaining a legacy Android codebase that already uses Kotter Knife
- studying how Kotlin delegated properties can wrap view lookups

## When to avoid
- starting any new Android project
- you want view binding - use Android's official view binding
- you care about memory allocations, since it allocates an object per view reference

## Facets
- artifact type: library
- maturity: abandoned
- function: ui-components, developer-tools
- domain: mobile-development, android-tools, developer-tools
- platform: jvm
- tags: view-binding, kotlin-delegates, deprecated, butter-knife, android

## Member repositories
- JakeWharton/kotterknife (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:25.976012+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 2026-08-30T02:46:36.628249+00:00, confidence not recorded.
  - readme: https://github.com/JakeWharton/kotterknife (fetched 2026-08-28T04:06:25.976012+00:00, sha e7ae99d0ffe3)
- Data as of 2026-08-30T08:39:29.467469+00:00.