Uniapp使用手机NFC功能

 新建一个utils（随便起的）文件夹和pages同级

import store from '@/store/index.js'

// 包路径
const package_NdefRecord = 'android.nfc.NdefRecord';
const package_NdefMessage = 'android.nfc.NdefMessage';
const package_TECH_DISCOVERED = 'android.nfc.action.TECH_DISCOVERED';
const package_Intent = 'android.content.Intent';
const package_Activity = 'android.app.Activity';
const package_PendingIntent = 'android.app.PendingIntent';
const package_IntentFilter = 'android.content.IntentFilter';
const package_NfcAdapter = 'android.nfc.NfcAdapter';
const package_Ndef = 'android.nfc.tech.Ndef';
const package_NdefFormatable = 'android.nfc.tech.NdefFormatable';
const package_Parcelable = 'android.os.Parcelable';
const package_String = 'java.lang.String';

let NfcAdapter;
let NdefRecord;
let NdefMessage;
let readyWriteData = false; //开启写
let readyRead = true; //开启读
let noNFC = false;
let techListsArray = [
	['android.nfc.tech.IsoDep'],
	['android.nfc.tech.NfcA'],
	['android.nfc.tech.NfcB'],
	['android.nfc.tech.NfcF'],
	['android.nfc.tech.Nfcf'],
	['android.nfc.tech.NfcV'],
	['android.nfc.tech.NdefFormatable'],
	['android.nfc.tech.MifareClassi'],
	['android.nfc.tech.MifareUltralight']
];

export default {
	listenNFCStatus: function () {
		// console.log("---------监听NFC状态--------------")
		let that = this;
		try {
			let main = plus.android.runtimeMainActivity();
			let Intent = plus.android.importClass('android.content.Intent');
			let Activity = plus.android.importClass('android.app.Activity');
			let PendingIntent = plus.android.importClass('android.app.PendingIntent');
			let IntentFilter = plus.android.importClass('android.content.IntentFilter');
			NfcAdapter = plus.android.importClass('android.nfc.NfcAdapter');
			let nfcAdapter = NfcAdapter.getDefaultAdapter(main);

			if (nfcAdapter == null) {
				uni.showToast({
					title: '设备不支持NFC！',
					icon: 'none'
				})
				noNFC = true;
				return;
			}

			if (!nfcAdapter.isEnabled()) {
				uni.showToast({
					title: '请在系统设置中先启用NFC功能！',
					icon: 'none'
				});
				noNFC = true;
				return;
			} else {
				noNFC = false;
			}

			let intent = new Intent(main, main.getClass());
			intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
			let pendingIntent = PendingIntent.getActivity(main, 0, intent, 0);
			let ndef = new IntentFilter("android.nfc.action.TECH_DISCOVERED");
			ndef.addDataType("*/*");
			let intentFiltersArray = [ndef];

			plus.globalEvent.addEventListener('newintent', function () {
				// console.log('newintent running');
				// 轮询调用 NFC
				setTimeout(that.nfcRuning(), 1000);
			});
			plus.globalEvent.addEventListener('pause', function (e) {
				// console.log('pause running');
				if (nfcAdapter) {
					//关闭前台调度系统
					//恢复默认状态
					nfcAdapter.disableForegroundDispatch(main);
				}
			});
			plus.globalEvent.addEventListener('resume', function (e) {
				// console.log('resume running');
				if (nfcAdapter) {
					//开启前台调度系统
					// 优于所有其他NFC
					nfcAdapter.enableForegroundDispatch(main, pendingIntent, intentFiltersArray,
						techListsArray);
				}
			});
			nfcAdapter.enableForegroundDispatch(main, pendingIntent, intentFiltersArray, techListsArray);
		} catch (e) {
			console.error(e);
		}
	},
	nfcRuning: function () { //
		// console.log("--------------NFC 运行---------------")
		NdefRecord = plus.android.importClass("android.nfc.NdefRecord");
		NdefMessage = plus.android.importClass("android.nfc.NdefMessage");
		let main = plus.android.runtimeMainActivity();
		let intent = main.getIntent();
		let that = this;

		// console.log("action type:" + intent.getAction());
		// console.log(package_TECH_DISCOVERED == intent.getAction());
		if (package_TECH_DISCOVERED == intent.getAction()) {
			// console.log(readyRead)
			if (readyRead) {
				// console.log("----------我在读1-------------")
				that.read(intent);
				readyRead = false;
			}
		}
	},
	read(intent) { // 读代码
		// console.log("----------我在读read-------------")
		toast('请勿移开标签正在读取数据');
		let that = this;
		// NFC id
		let bytesId = intent.getByteArrayExtra(NfcAdapter.EXTRA_ID);
		let nfc_id = that.byteArrayToHexString(bytesId);
		// console.log('nfc_id:', nfc_id, 124565423454321234);
		store.commit('setnfc_id', nfc_id);
		// return nfc_id
		toast('nfc_id：' + nfc_id);
		let Parcelable = plus.android.importClass("android.os.Parcelable");
		let rawmsgs = intent.getParcelableArrayExtra("android.nfc.extra.NDEF_MESSAGES");
		//let rawmsgs = intent.getParcelableArrayExtra();

		// console.log("数据" + rawmsgs)
		if (rawmsgs != null && rawmsgs.length > 0) {
			let records = rawmsgs[0].getRecords();
			let result = records[0].getPayload();
			let data = plus.android.newObject("java.lang.String", result);
			// 写入vuex
			// store.commit('setNfcReadTxt', data);
			// toast('NFC 数据：' + data);

		}
	},
	byteArrayToHexString: function (inarray) { // 将字节数组转换为字符串  
		let i, j, inn;
		let hex = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"];
		let out = "";

		for (j = 0; j < inarray.length; ++j) {
			inn = inarray[j] & 0xff;
			i = (inn >>> 4) & 0x0f;
			out += hex[i];
			i = inn & 0x0f;
			out += hex[i];
		}
		return out;
	},
	writeData: function () { // 更改写状态
		if (noNFC) {
			toast('请检查设备是否支持并开启 NFC 功能！');
			return;
		}
		// 轮询条件
		readyWriteData = true;
		toast('请将NFC标签靠近！');
	},
	readData: function () { // 更改读状态
		if (noNFC) {
			toast('请检查设备是否支持并开启 NFC 功能！');
			return;
		}
		// 轮询条件
		readyRead = true;
		// toast('请将NFC标签靠近！');
	},
	stopRead: function () {
		readyRead = false;
	},
	// close: function(){

	// },
	setTxt: function (txt) {
		if (noNFC) {
			toast('请检查设备是否支持并开启 NFC 功能！');
			return;
		}
	}
}

function toast(content) {
	uni.showToast({
		title: content,
		icon: 'none'
	})
}

然后再页面中调用