NFC Capture on Android

NFC capture on Android

Android has single method for starting NFC Capture while there are multiple options to start the NFC Capture on iOS.

If you're not capturing the NFC Data after the IDCapture, this process requires some parameters from the id itself.

All date formats must be in YYMMDD. For example, September 1st 1999 becomes 990901.

Also you must stop the NFC listener on the dispose() method of your widget. You can also achive this on the onFinishedCallback parameter of startNFCListener method of AndroidNFCCapture class if you're calling this method from a stateless widget.

The example below uses statefull widget.

  Future<void> stopNFCListener() async {
    _nfcCapture.stopNFCListener();
  }

  Future<void> setNFCType() async {
    _nfcCapture.setType("XXX_NF_0");
  }

  @override
  void initState() {
    setNFCType();
    super.initState();
  }

  @override
  void dispose() {
    stopNFCListener();
    super.dispose();
  }

Starting the capture

OutlinedButton(
    onPressed: () {
      if (_dateOfBirth != "" &&
          _expireDate != "" &&
          _documentNo != "") {
        _nfcCapture.startNFCListener(
            birthDate: _dateOfBirth,
            expireDate: _expireDate,
            documentNo: _documentNo,
            onFinishedCallback: (isCaptureCompleted) {
              setState(() {
                _isCompleted = isCaptureCompleted;
              });
            },
            onErrorCallback: (errorString) {
              // handle the read errors here
            },
            onScanStart: () {
              // This callback will invoked when user shows an NFC tag 
            }
          ).catchError((err) {
            // Handle the intialization errors here
          });
      }
    },
    child:
        const Text("NVI Data Start (fields must be filled)"))

To upload you can call the upload method like this

OutlinedButton(
    onPressed: () {
      if (_isCompleted == false) {
        return;
      } else {
        _nfcCapture.upload();
      }
    },
    child: const Text("Upload (last step)"))