是否可以在颤振中读取Mifare Ultralight NFC芯片?

Question

我正在创建一个需要读取NFC芯片的移动应用程序，但是这些芯片是MiFare Ultralight芯片，并且是MIFARE超轻格式。有谁知道一个库，或者我可以用来制作允许我读取这些芯片的库的资源？

Answer 1

请使用 试试这个包 https://github.com/akeblom/flutter-nfc-reader
它修复了原始问题并添加了写入NFC功能。
您可以直接使用示例或分叉。
它与真实设备一起工作正常。

import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_nfc_reader/flutter_nfc_reader.dart';
void main() => runApp(MyApp());
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
NfcData _nfcData;
@override
void initState() {
super.initState();
}
Future<void> startNFC() async {
setState(() {
_nfcData = NfcData();
_nfcData.status = NFCStatus.reading;
});
print('NFC: Scan started');
print('NFC: Scan readed NFC tag');
FlutterNfcReader.read.listen((response) {
setState(() {
_nfcData = response;
});
});
}
Future<void> writeNFC() async {
setState(() {
_nfcData = NfcData();
_nfcData.status = NFCStatus.writing;
});
print('NFC: Scan started');
print('NFC: Scan readed NFC tag');
Map<String, String> jsonData = {"test": "This is json data"};
var jsonStr = jsonEncode(jsonData);
FlutterNfcReader.writeToCard(jsonStr).listen((response) {
setState(() {
_nfcData = response;
});
});
// FlutterNfcReader.write.listen((response) {
//   setState(() {
//     _nfcData = response;
//   });
// });
}
Future<void> stopNFC() async {
NfcData response;
try {
print('NFC: Stop scan by user');
response = await FlutterNfcReader.stop;
} on PlatformException {
print('NFC: Stop scan exception');
response = NfcData(
id: '',
content: '',
error: 'NFC scan stop exception',
statusMapper: '',
);
response.status = NFCStatus.error;
}
setState(() {
_nfcData = response;
});
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Plugin example app'),
),
body: SafeArea(
top: true,
bottom: true,
child: Center(
child: ListView(
children: <Widget>[
SizedBox(
height: 10.0,
),
Text(
'- NFC Status -n',
textAlign: TextAlign.center,
),
Text(
_nfcData != null ? 'Status: ${_nfcData.status}' : '',
textAlign: TextAlign.center,
),
Text(
_nfcData != null ? 'Identifier: ${_nfcData.id}' : '',
textAlign: TextAlign.center,
),
Text(
_nfcData != null ? 'Content: ${_nfcData.content}' : '',
textAlign: TextAlign.center,
),
Text(
_nfcData != null ? 'Error: ${_nfcData.error}' : '',
textAlign: TextAlign.center,
),
RaisedButton(
child: Text('Start NFC'),
onPressed: () {
startNFC();
},
),
if (!Platform.isIOS)
RaisedButton(
child: Text('Write NFC'),
onPressed: () {
writeNFC();
},
),
RaisedButton(
child: Text('Stop NFC'),
onPressed: () {
stopNFC();
},
),
],
),
),
)),
);
}
}