Agent-skills-standard android-performance

Optimize Android app startup, UI rendering, and frame stability with Baseline Profiles and lazy initialization. Use when reducing startup time, diagnosing jank, or improving UI rendering performance. (triggers: **/*Benchmark.kt, **/*Initializer.kt, BaselineProfile, JankStats, recomposition)

install

source · Clone the upstream repo

git clone https://github.com/HoangNguyen0403/agent-skills-standard

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/HoangNguyen0403/agent-skills-standard "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/android/android-performance" ~/.claude/skills/hoangnguyen0403-agent-skills-standard-android-performance && rm -rf "$T"

manifest: skills/android/android-performance/SKILL.md

source content

Android Performance Standards

Priority: P1

1. Accelerate Startup

Generate Baseline Profiles for all production apps — pre-compiles critical paths (30-40% startup improvement).
Defer heavy SDK init using
```
App Startup
```
or lazy Singletons. Never block
```
Application.onCreate
```
.

See baseline & startup for lazy initialization patterns.

2. Eliminate UI Jank

Use Layout Inspector to find unnecessary recompositions.
Load images with Coil/Glide using proper caching and resizing (
```
.crossfade()
```
).
```
LazyColumn
```
must use
```
key
```
and stable item classes.

See baseline & startup for LazyColumn optimization.

3. Avoid Layout Bottlenecks

Replace nested weights with
```
ConstraintLayout
```
(Views) or
```
Row
```
/
```
Column
```
with
```
Modifier.weight
```
(Compose).
Never hold Activity context in Singletons — use Application context to prevent memory leaks.

Anti-Patterns

No Nested Weights: Use ConstraintLayout (Views) or Row/Column (Compose) instead.
No Activity Context in Singletons: Use Application context to prevent memory leaks.

References

Baseline & Startup