A simple project to show how to read a NFC tag value and print it on the device screen.

The idea of this project is to show how easy is to read a NFC tag with react native. I've written a helper class NFCHelper.js to simplify the use of the the awesome react-native-nfc-manager library.

The main ideas of the NFCHelper class are:

1. Easy manage the startNFC listener with error handling.
2. Pass a reading function callback to the startNFC, so you are able to handle the reading return value the way you want.
3. Stop the NFC listener easily.

I've written a medium post (in portuguese language) to show more detailed information about NFC and this project. Check it out.

Clone this repository and run the command:

npm install

and then link the react-native-nfc-manager library with the command:

react-native link react-native-nfc-manager

componentWillMount() {
  startNFC(this.handleNFCTagReading);
}

componentWillUnmount() {
  stopNFC();
}

handleNFCTagReading = nfcResult => {
  if (nfcResult.Error) {
    console.log(`Error title: ${nfcResult.Error.Title}`);
    console.log(`Error description: ${nfcResult.Error.Message}`);
  } else {
    console.log(`Tag value found: ${nfcResult.tagValue}`);
  }
};