文章前景：目前公司主要的业务方向是sass平台，我们的admin系统是基于qiankun搭建的主基座和子模块，app是flutter+h5。我主要负责的是
1、qiankun基座的搭建
2、flutter基座和通信jsbridge的搭建
3、app内h5的书写
4、模块开发规范的书写
5、…
在完善通信jsbridge时，发现有模块需要是需要基于nfc实现的，所以我需要完善ios与android的nfc功能

在pub上看到nfc_manager 反馈还不错，调查了一下，基本需求可以达到。在此，总结一下几个关键点，希望可以帮助到更多的小伙伴。

一、加入插件

首先，我们需要在yaml文件加入该pub

dependencies:
 nfc_manager: ^2.0.2

二、配置android权限

在android上我们需要在android/app/src/main/AndroidManifest.xml加入以下授权代码

<!--NFC读取权限配置-->
<uses-permission android:name="android.permission.NFC"/>

三、 配置ios环境

ios一言难尽，过程真的很坎坷，我配了很久。
首先你必须得有一个公司级的开发者账号，个人开发者是不允许使用的，因为你需要在xocde上配置signing的一些东西，然而这些东西个人开发者是不支持的，这个问题我找了很久

1、添加Identifiers并配置NFC Tag Reading

1. 让公司的开发者账号添加你的ios账号
2. iosDeveloper地址：https://developer.apple.com/account
3. 开发者账号内添加一个Identifiers给我这个app使用，添加Identifiers时，记得勾选NFC Tag Reading权限
4. 可以顺便给自己添加一个devices，供自己真机调试使用
   

2、配置Capablity

• 您需要在team内选择公司的开发者账号，否则您将无法进行以下操作
• 当您有权限后，您可以添加一个Capablity，将Near Field Communication Tag Reading加入您的Signing

3、配置info.list文件

因为xcode点来点去的麻烦，我选择直接在flutter的ios目录ios/Runner/Info.plist内添加上以下授权代码

<key>LSApplicationQueriesSchemes</key>
	<array>
		<string>sms</string>
		<string>tel</string>
		<string>wechat</string>
		<string>weixin</string>
		<string>weixinULAPI</string>
		<string>comgooglemaps</string>
		<string>baidumap</string>
		<string>iosamap</string>
		<string>waze</string>
		<string>yandexmaps</string>
		<string>yandexnavi</string>
		<string>citymapper</string>
		<string>mapswithme</string>
		<string>osmandmaps</string>
		<string>dgis</string>
		<string>qqmap</string>
		<string>here-location</string>
	</array>
	<key>LSRequiresIPhoneOS</key>
	<true/>
	<key>NFCReaderUsageDescription</key>
	<string>是否允许使用NFC</string>
	<key>NSAppTransportSecurity</key>
	<key>com.apple.developer.nfc.readersession.felica.systemcodes</key>
	<array>
		<string>8005</string>
		<string>8008</string>
		<string>0003</string>
		<string>fe00</string>
		<string>90b7</string>
		<string>927a</string>
		<string>86a7</string>
	</array>
	<key>com.apple.developer.nfc.readersession.formats</key>
	<array>
		<string>NDEF</string>
		<string>TAG</string>
	</array>
	<key>com.apple.developer.nfc.readersession.iso7816.select-identifiers</key>
	<array>
		<string>A0000002471001</string>
		<string>A000000003101001</string>
		<string>A000000003101002</string>
		<string>A0000000041010</string>
		<string>A0000000042010</string>
		<string>A0000000044010</string>
		<string>44464D46412E44466172653234313031</string>
		<string>D2760000850100</string>
		<string>D2760000850101</string>
		<string>00000000000000</string>
	</array>

四、开发

以上配置都配好了情况下，您可以愉快的开发了，以下为官网的例子可以作为参考使用

import 'dart:typed_data';

import 'package:flutter/material.dart';
import 'package:nfc_manager/nfc_manager.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  State<StatefulWidget> createState() => MyAppState();
}

class MyAppState extends State<MyApp> {
  ValueNotifier<dynamic> result = ValueNotifier(null);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('NfcManager Plugin Example')),
        body: SafeArea(
          child: FutureBuilder<bool>(
            future: NfcManager.instance.isAvailable(),
            builder: (context, ss) => ss.data != true
                ? Center(child: Text('NfcManager.isAvailable(): ${ss.data}'))
                : Flex(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    direction: Axis.vertical,
                    children: [
                      Flexible(
                        flex: 2,
                        child: Container(
                          margin: EdgeInsets.all(4),
                          constraints: BoxConstraints.expand(),
                          decoration: BoxDecoration(border: Border.all()),
                          child: SingleChildScrollView(
                            child: ValueListenableBuilder<dynamic>(
                              valueListenable: result,
                              builder: (context, value, _) =>
                                  Text('${value ?? ''}'),
                            ),
                          ),
                        ),
                      ),
                      Flexible(
                        flex: 3,
                        child: GridView.count(
                          padding: EdgeInsets.all(4),
                          crossAxisCount: 2,
                          childAspectRatio: 4,
                          crossAxisSpacing: 4,
                          mainAxisSpacing: 4,
                          children: [
                            ElevatedButton(
                                child: Text('Tag Read'), onPressed: _tagRead),
                            ElevatedButton(
                                child: Text('Ndef Write'),
                                onPressed: _ndefWrite),
                            ElevatedButton(
                                child: Text('Ndef Write Lock'),
                                onPressed: _ndefWriteLock),
                          ],
                        ),
                      ),
                    ],
                  ),
          ),
        ),
      ),
    );
  }

  void _tagRead() {
    NfcManager.instance.startSession(onDiscovered: (NfcTag tag) async {
      result.value = tag.data;
      NfcManager.instance.stopSession();
    });
  }

  void _ndefWrite() {
    NfcManager.instance.startSession(onDiscovered: (NfcTag tag) async {
      var ndef = Ndef.from(tag);
      if (ndef == null || !ndef.isWritable) {
        result.value = 'Tag is not ndef writable';
        NfcManager.instance.stopSession(errorMessage: result.value);
        return;
      }

      NdefMessage message = NdefMessage([
        NdefRecord.createText('Hello World!'),
        NdefRecord.createUri(Uri.parse('https://flutter.dev')),
        NdefRecord.createMime(
            'text/plain', Uint8List.fromList('Hello'.codeUnits)),
        NdefRecord.createExternal(
            'com.example', 'mytype', Uint8List.fromList('mydata'.codeUnits)),
      ]);

      try {
        await ndef.write(message);
        result.value = 'Success to "Ndef Write"';
        NfcManager.instance.stopSession();
      } catch (e) {
        result.value = e;
        NfcManager.instance.stopSession(errorMessage: result.value.toString());
        return;
      }
    });
  }

  void _ndefWriteLock() {
    NfcManager.instance.startSession(onDiscovered: (NfcTag tag) async {
      var ndef = Ndef.from(tag);
      if (ndef == null) {
        result.value = 'Tag is not ndef';
        NfcManager.instance.stopSession(errorMessage: result.value.toString());
        return;
      }

      try {
        await ndef.writeLock();
        result.value = 'Success to "Ndef Write Lock"';
        NfcManager.instance.stopSession();
      } catch (e) {
        result.value = e;
        NfcManager.instance.stopSession(errorMessage: result.value.toString());
        return;
      }
    });
  }
}