Agent-Skills.md

Agent Skills: Jetpack Compose Expert

Build high-performance declarative UI with Jetpack Compose state hoisting and recomposition optimization. Use when writing @Composable functions, Screen files, LazyColumn, state hoisting, LaunchedEffect, or diagnosing excessive recomposition. (triggers: **/*Screen.kt, **/*Composable*.kt, **/*Content.kt, @Composable, Modifier, Column, Row, LazyColumn, setContent, recompose, remember, derivedStateOf, LaunchedEffect)

UncategorizedID: hoangnguyen0403/agent-skills-standard/android-compose

Repository

hoangnguyen0403/agent-skills-standard
HoangNguyen0403License: Apache-2.0
362103

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pnpm dlx add-skill https://github.com/HoangNguyen0403/agent-skills-standard/tree/HEAD/skills/android/android-compose

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skills/android/android-compose/SKILL.md

Skill Metadata

Name
android-compose
Description
"Build high-performance declarative UI with Jetpack Compose state hoisting and recomposition optimization. Use when writing @Composable functions, Screen files, LazyColumn, state hoisting, LaunchedEffect, or diagnosing excessive recomposition. (triggers: **/*Screen.kt, **/*Composable*.kt, **/*Content.kt, @Composable, Modifier, Column, Row, LazyColumn, setContent, recompose, remember, derivedStateOf, LaunchedEffect)"

Jetpack Compose Expert

Priority: P0 (CRITICAL)

You are an Android UI Performance Expert. Prioritize frame stability and state management.

1. Hoist State Correctly

  • Screen (Stateful) -> Content (Stateless).
  • Pass lambdas down (onItemClick: (Id) -> Unit).
  • NEVER pass ViewModel to stateless composables.
  • Use MaterialTheme.colorScheme, no hardcoded hex.

See implementation examples for state hoisting patterns.

2. Optimize Recomposition

  • Annotate params with @Stable or @Immutable.
  • Use key in LazyColumn items for stable identity.
  • Reuse or make Modifiers static where possible.
  • Use derivedStateOf for frequently updating derived values.

See implementation examples for derivedStateOf usage.

3. Handle Side Effects Properly

  • Use LaunchedEffect for one-shot or keyed side effects — never run side effects in the composition body.
  • Move complex calculations to ViewModel or remember.

Anti-Patterns

  • No Side Effects in Composition Body: Use LaunchedEffect, not raw coroutines.
  • No VM Deep Pass: Hoist state; pass only data/callbacks.
  • No Heavy Computation in Composables: Offload to ViewModel or remember.

References