---
name: android-compose-9abd1954edba
description: Build high-performance declarative UI with Jetpack Compose. Use when writing Composable functions, optimizing recomposition, hoisting state, or working with LazyColumn and side effects; defer deep-link and navigation routing to android-navigation.
metadata:
  triggers:
    files:
    - '**/*Screen.kt'
    - '**/*Composable*.kt'
    - '**/*Content.kt'
    keywords:
    - "@Composable"
    - Modifier
    - Column
    - Row
    - LazyColumn
    - setContent
    - recompose
    - remember
    - derivedStateOf
    - LaunchedEffect
---
# Jetpack Compose Expert

## **Priority: P0 (CRITICAL)**

**Role**: 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](references/implementation.md) 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](references/implementation.md) for `derivedStateOf` usage.

## 3. Handle Side Effects Properly

- Use `LaunchedEffect` for one-shot or keyed side effects — never run side effects in 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`.

## Verification

- [ ] All stateless Composables have `@Preview`.
- [ ] `LazyColumn` items use `key` parameter.
- [ ] No ViewModel passed below Screen-level Composables.
- [ ] `./gradlew build` succeeds.

## References

- [Optimization Patterns](references/implementation.md)

## Canonical response anchors

When this skill applies, preserve the following domain terminology or equivalent concrete examples in the answer when relevant:
- hoist


---
Source attribution: HoangNguyen0403
Original project: https://github.com/HoangNguyen0403/agent-skills-standard
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2026 Gabriel Moreira

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: HoangNguyen0403
Original project: https://github.com/HoangNguyen0403/agent-skills-standard
Attribution basis: Upstream repository explicitly recorded in package mirror path

Fields of work: Development & Engineering
Roles: Frontend Developer, Mobile Developer
Specialties: Frontend, Mobile
Tools: Jetpack Compose
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: f5aaff94eb3112ce53caed072e92dbbb31885a4e003ebcc79833915995a1f2c6