android-development

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---
name: android-development
description: Use when building or reviewing native Android applications with Kotlin, Compose, Hilt, and layered architecture; use android-data-persistence or android-tdd for focused data and test work.
metadata:
  portable: true
  compatible_with:
  - Codex
  - codex
---

## Platform Notes

- Optional helper plugins may help in some environments, but they must not be treated as required for this skill.

# Android Development Standards
Acknowledgement: Shared by Peter Bamuhigire, techguypeter.com, +256 784 464178.

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## Use When

- Android development standards for AI agent implementation. Kotlin-first, Jetpack Compose UI, MVVM + Clean Architecture, Hilt DI, comprehensive security, testing, and performance patterns. Use when building or reviewing Android applications...

## Evidence Produced

| Category | Artifact | Format | Example |
|----------|----------|--------|---------|
| Correctness | Android feature test plan | Markdown doc covering unit, instrumentation, and Compose tests | `docs/android/feature-tests-checkout.md` |
| UX quality | Accessibility audit | Markdown doc covering TalkBack, semantics, and contrast | `docs/android/a11y-checkout.md` |

## References

- Use the `references/` directory for deep detail after reading the core workflow below.
- `references/android-ai-ml.md` for on-device Android AI/ML, ML Kit, LiteRT, MediaPipe, AICore, and Gemini Nano.
- `references/android-biometric-login.md` for AndroidX Biometric launch gates and CryptoObject-backed authentication.
- `references/android-pdf-export.md` for native `PdfDocument` export and Android report PDF generation.
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## Load Order

1. Load `world-class-engineering` for shared production gates.
2. Load `system-architecture-design` when the Android app is part of a larger backend or multi-module system.
3. Load this skill for Android implementation details.
4. Load `android-ui-ux-design` for every user-facing Android screen, especially premium, dashboard, onboarding, reporting, form, or revenue-critical flows.
5. Load `vibe-security-skill` and feature-specific skills as needed.

Production-grade Android development standards for AI-assisted implementation. Kotlin-first with Jetpack Compose, following modern Android best practices.

**Core Stack:** Kotlin 100% | Jetpack Compose (default UI toolkit) | MVVM + Clean Architecture | Hilt DI
**Min SDK:** 29 (Android 10) | **Target SDK:** 35 (Android 15)
**Compatibility:** Must run flawlessly on BOTH the minSdk (oldest supported) AND the latest stable Android release
**Reference App:** [Now in Android](https://github.com/android/nowinandroid) - Google's official sample demonstrating these standards in a production-quality codebase

## When to Use

- Building new Android applications or features
- Reviewing Android code for quality and standards compliance
- Generating Kotlin/Compose code via AI agents
- Setting up Android project structure
- Implementing security, testing, or performance patterns
- Integrating with REST APIs from Android clients

## Backend Environments

Android apps connect to a PHP/MySQL backend deployed across three environments:

| Environment | Base URL Pattern | Database | Notes |
|---|---|---|---|
| **Development** | `http://{LAN_IP}:{port}/DMS_web/api/` | MySQL 8.4.7 (Windows WAMP) | Use host machine's LAN IP, not `localhost` |
| **Staging** | `https://staging.{domain}/api/` | MySQL 8.x (Ubuntu VPS) | For QA and testing |
| **Production** | `https://{domain}/api/` | MySQL 8.x (Debian VPS) | Live users |

Configure base URLs using build flavors (`dev`, `staging`, `prod`) so the app targets the correct backend per build variant. All backends use `utf8mb4_unicode_ci` collation and MySQL 8.x.

## Quick Reference

| Topic                       | Reference File                        | Covers                                          |
| --------------------------- | ------------------------------------- | ------------------