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react-nativenfc

NFC using foregroundDispatch in react-native and android

I'm trying to develop an app in react-native that should use android's foreground dispatch system to intercept nfc events before any other activity does. The android part is not a problem, I have done it in a native app.

What would the correct way of doing this be in an app that uses react-native?

Solution

  • I ended up adding creation of pending intent and adding of tag/NDEF filters to MainActivity. Then onNewIntent parses the relevant data and relays it to js via 

    getReactInstanceManager()
  .getCurrentReactContext()
  .getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
  .emit("nfcTagEvent", params);

    Then, in my main RN component

    DeviceEventEmitter.addListener('nfcTagEvent', event =>
  // do something with event
);