ReddRadar
Agent skill
ios-dev
iOS/React Native development with Expo. Use when working on mobile app, running builds, debugging device issues, or setting up development environment including tethering.
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Install this agent skill to your Project
npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/development/ios-dev
SKILL.md
iOS Development Guide
Project Structure
mobile/
├── app/ # Expo Router pages
│ ├── _layout.tsx
│ ├── index.tsx # Home screen
│ └── room/[id].tsx # Voice call room
├── src/
│ ├── components/ # UI components
│ ├── hooks/ # Custom hooks (WebRTC, Socket, Speech)
│ └── types/
├── ios/ # Native iOS project (generated by prebuild)
└── .env # Environment variables
Key Commands
bash
cd mobile
# Development (WiFi - same network as Mac)
npx expo start --dev-client
# Development (Tethering - requires tunnel)
npx expo start --dev-client --tunnel
# Build for specific device
npx expo run:ios --device "DEVICE_NAME"
# Clean rebuild (after config changes)
npx expo prebuild --platform ios --clean
# List available devices
xcrun xctrace list devices
Environment Configuration
bash
# WiFi development
EXPO_PUBLIC_SIGNALING_SERVER_URL=http://192.168.x.x:3001
# Production (Render server)
EXPO_PUBLIC_SIGNALING_SERVER_URL=https://webrtc-signaling-xxxx.onrender.com
Tethering Development
When Mac is connected to iPhone's Personal Hotspot:
- Problem: iPhone cannot directly access devices on its own hotspot
- Solution: Use ngrok tunnel
bash
# Install ngrok (first time)
npm install -g @expo/ngrok@^4.1.0
# Start with tunnel
npx expo start --dev-client --tunnel
# Get tunnel URL
curl -s http://127.0.0.1:4040/api/tunnels | grep -o '"public_url":"https://[^"]*"'
Important: Use HTTPS URL (iOS App Transport Security requirement)
Troubleshooting
| Issue | Solution |
|---|---|
| "Device is busy" | Unlock iPhone, reconnect USB |
| Metro connection fails | Check IP address, or use --tunnel |
| "main" not registered | Restart Metro with --clear |
| Build fails after config change | Run npx expo prebuild --clean |
| Simulator no audio | Use real device for audio testing |
Development Workflow
- Start signaling server:
cd server && npm run dev - Start Metro:
cd mobile && npx expo start --dev-client - Open app on iPhone, enter Metro URL
- For code changes: Hot reload automatic
- For native changes: Rebuild with
npx expo run:ios --device
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