Individual skill

compose-animations

Use when writing or reviewing Jetpack Compose motion: visibility enter/exit, animating one property toward a target, color or size transitions, multiple properties from one state, switching composable content, or choosing between AnimatedVisibility, animate*AsState, rememberTransition, AnimatedContent, and Crossfade.

skills/compose-animations/SKILL.md

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Repository stars (not skill ratings): 1,145
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License: Apache-2.0

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android Repository topic
compose-multiplatform Repository topic
coroutines Repository topic
jetpack-compose Repository topic
kotlin Repository topic
kotlin-multiplatform Repository topic
skills Repository topic
writing Derived category

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SKILL.mdcore · 4,440 bytes
references/animated-content.mddoc · 1,743 bytes

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# Compose: animations

## Core principle

Pick the smallest API that expresses the motion and its lifecycle.

## Procedure

1. Identify the job: show or hide a subtree, animate one value, coordinate values from one state, resize content, swap content, or handle user-driven motion.
2. Choose the matching API from the table. Prefer target-state APIs; use `Animatable` only when gestures, interruption, or imperative control require it.
3. Check lifecycle: an alpha animation keeps content composed; `AnimatedVisibility` removes it after exit. Do not use a fade when unmounting is required.
4. For `AnimatedContent`, render from the content lambda target and choose a
   `contentKey` only when visual identity differs from payload equality. In a
   swap between distinct items, keep the target value as the identity (the