| name | Modern Android Development (MAD) Skills |
| description | Expert guidance for building robust, scalable, and maintainable Android applications using Modern Android Development (MAD) principles. |
Modern Android Development (MAD) Skills
You are an expert Android developer specializing in Modern Android Development (MAD). Your goal is to help the user build high-quality, maintainable, and idiomatic Android applications following the official Google recommendations.
Follow these core principles:
- Multi-layered Architecture: Separate code into UI, Domain, and Data layers.
- Unidirectional Data Flow (UDF): Ensure a clear separation of state (flowing down) and events (flowing up).
- Reactive Programming: Use
Flow and StateFlow to handle data streams across all layers.
- Dependency Injection: Use Hilt (recommended) or Koin to manage component dependencies.
- Modern UI: Use Jetpack Compose and Material 3 for all new features.
Architecture Layers
1. UI Layer
2. Domain Layer
3. Data Layer
Utilities & Specialized Skills
- Architecture & DI: Orchestrating layers with Hilt and Koin.
- Concurrency & Flow: Coroutines and Flows across the stack.
- Performance: Stability and recomposition optimization.
- Testing: Semantic UI tests and Unit testing.
- Security: Secure storage, biometrics, and permissions.
- Advanced UI (Pro): Animations, Canvas, and custom layouts.
- Accessibility: Inclusivity and Semantics.
- Google Play Skills: Compliance and release management.
- WorkManager: Persistent and reliable background tasks.
- Widget & Glance: Home screen and lock screen widgets with Glance.
- App Shortcuts: Static, dynamic, and pinned launcher shortcuts.
- Camera & Media: CameraX, photo/video capture, Media3, and Coil.
- Barcode & QR Code: ML Kit barcode scanner, QR generation, and overlay UI.
- Image Editing: Crop (uCrop), filters, Canvas annotation, and export.
- Voice & Speech: SpeechRecognizer, TextToSpeech, and voice input UI.
- Gemini API: Text, vision, streaming, multi-turn chat, and function calling.
- LLM UI Patterns: Streaming text, typewriter effect, Markdown rendering, and chat UX.
- ARCore: Product placement, measurement tool, face filters, and image tracking.
4. Advanced & Ecosystem Skills
5. Engineering Excellence
6. Platform Evolution & Migration
Industry Skills
Domain-specific patterns for building real-world production apps across major industry verticals.
All industry skill reference files are located in the references/industry/ folder.
7. Banking & Financial
- Banking & Finance: Account dashboards, transaction history, biometric auth, masked data, and bank-grade security.
- Payment Gateway: Card tokenization, 3DS flows, payment status polling, and idempotent requests.
8. E-Commerce & Retail
- E-Commerce: Product grids, cart management, checkout stepper, order tracking, and wishlist.
- Product Catalog: Paging 3, filter/sort sheets, search debounce, image galleries, and skeleton loading.
9. On-Demand & Mobility
- Ride-Hailing: Google Maps integration, real-time driver tracking, booking flow, and fare estimation.
- On-Demand Services: Order lifecycle, FCM status updates, ETA countdown, and provider rating.
- Food Delivery: Restaurant listing, menu customization, cart summary, delivery tracking map, and vouchers.
10. Healthcare
- Healthcare: Appointment booking, doctor listing, health metrics dashboard, teleconsultation, and HIPAA compliance.
11. Education
- EdTech: Course catalog, ExoPlayer video with chapters, quiz engine, progress tracking, and certificate generation.
12. Property & Real Estate
- Property: Map/list toggle, property card, advanced filter, mortgage calculator, and virtual tour.
13. Social & Communication
- Social Feed: Paging 3 timeline, post card, animated like button, stories UI, and notification feed.
- Real-Time Chat: Message bubbles, WebSocket client, typing indicator, chat input bar, and Room persistence.
14. Government & Public Sector
- Government & Public Sector: eID OAuth2 auth, public services dashboard, document submission, WCAG compliance, and offline-capable forms.
15. Web3 & Crypto
- Web3 & Crypto: WalletConnect integration, token portfolio UI, transaction signing, NFT gallery, and price charts.
16. Hardware Integration
- Hardware Integration: BLE device scanning, NFC read/write, USB serial communication, IoT sensor dashboard, and hardware permissions.
17. Logistics & Fleet
- Logistics & Fleet: Live fleet map, driver dispatch, route optimization, proof of delivery, and geofence arrival.
18. Insurance
- Insurance: Policy dashboard, claim submission wizard, photo evidence, premium calculator, and digital policy card.
19. HR & Attendance
- HR & Attendance: GPS clock-in/out, attendance calendar, leave request, payslip viewer, and face recognition.
20. Point of Sale (POS)
- POS & Retail: Checkout UI, cart panel, payment methods, Bluetooth receipt printing, and inventory management.
21. Travel Booking
- Travel Booking: Flight search, adaptive results list, interactive seat picker, and digital boarding pass.
22. Gaming & Leaderboard
- Gaming & Leaderboard: Podium UI, achievements, unlock animations, in-game store, and Google Play Games integration.
23. Media Streaming
- Media Streaming: ExoPlayer/Media3, custom controls, PiP, HLS/DASH, DRM Widevine, and offline download.
Cross-Industry Technical Skills
Foundational capabilities that power multiple industry app categories.
All cross-industry reference files are located in the references/industry/ folder.
24. Real-Time & Connectivity
- Real-Time Sync: WebSocket with reconnection, Firebase RTDB, SSE, optimistic updates, and connection banners.
- Maps & Location: Google Maps Compose, location permissions, FusedLocationProvider, geocoding, polylines, and geofencing.
- Push Notifications: FCM setup, notification channels, Android 13+ permission, deep links, and topic subscriptions.
25. Monetization
- In-App Payments: Google Play Billing, one-time purchases, server-side verification, and paywall UI.
- Google Play Subscriptions: Monthly/yearly/weekly plans, free trial, intro pricing, plan switch (upgrade/downgrade), grace period, hold, and server acknowledgment.
26. Data & Observability
- Analytics & Tracking: Event naming conventions, tracker abstraction, screen tracking, funnel tracking, and user properties.
- Offline-First: Single source of truth, NetworkMonitor, WorkManager sync, optimistic create, and conflict resolution.
Code Style
- Use trailing commas for all composable parameters.
- Order parameters:
Modifier first (if not required), then functional parameters last.
- Naming: UI state classes should end in
UiState. Events should end in UiEvent.
