NFC Link Writer

Write URLs to NFC tags. That's it.

A minimal React Native app with a single purpose: paste a URL, tap write, hold near an NFC tag. Works on Android and iOS.

Quick Start

git clone https://github.com/jagnd1/nfc-link-writer.git
cd nfc-link-writer
npm install

# Android (with Metro bundler)
npm run android

# iOS
cd ios && pod install && cd ..
npm run ios

Build Standalone APK (Android)

Create an APK that works without Metro bundler:

# Bundle JavaScript into APK
mkdir -p android/app/src/main/assets

npx react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res

# Build APK
cd android && ./gradlew assembleDebug && cd ..

# Install on device
adb install -r android/app/build/outputs/apk/debug/app-debug.apk

APK location: android/app/build/outputs/apk/debug/app-debug.apk

Requirements

Build tools:

• Node.js 18+
• Java JDK 17 (Android)
• Xcode 14+ (iOS, macOS only)
• Android SDK API 33+

Testing:

• Physical device with NFC (emulators don't support NFC)
• NTAG215/216 NFC tags recommended

Device Setup

Android: Enable Developer Options → USB Debugging → connect via USB.

iOS: Connect iPhone → trust computer → select device in Xcode.

Troubleshooting

# Clean builds
cd android && ./gradlew clean && cd ..
cd ios && rm -rf build Pods && pod install && cd ..
npm start -- --reset-cache

Dependencies

Package	Version	License
react	19.2.0	MIT
react-native	0.83.1	MIT
react-native-nfc-manager	3.17.2	MIT
react-native-safe-area-context	5.5.2	MIT

License

MIT - see LICENSE