AgentSkillsCN

Android Performance

基准配置文件、启动时间与 UI 渲染的标准。

SKILL.md
--- frontmatter
name: Android Performance
description: Standards for Baseline Profiles, Startup Time, and UI Rendering
metadata:
  labels: [android, performance, baseline-profile, startup]
  triggers:
    files: ['**/*Benchmark.kt', '**/*Initializer.kt']
    keywords: ['BaselineProfile', 'JankStats', 'recomposition']

Android Performance Standards

Priority: P1

Implementation Guidelines

Startup Time

  • •Baseline Profiles: Mandatory for all production apps to pre-compile critical paths (improves startup by 30-40%).
  • •Lazy Initialization: Defer heavy SDK init using App Startup or lazy Singletons. Avoid blocking Application.onCreate.

UI Performance

  • •Recomposition: Use "Layout Inspector" to find unnecessary recompositions.
  • •Images: Use Coil/Glide with proper caching and resizing (.crossfade()).
  • •Lists: LazyColumn must use key and stableitem classes.

Anti-Patterns

  • •Nested Weights: **Avoid Nested Weights**: Use ConstraintLayout (Views) or simple Row/Col (Compose).
  • •Memory Leaks: **Watch Context**: Avoid leaking Activity Context in Singletons.

References