1.先添加权限
"<uses-permission android:name=\"android.permission.NFC\"/>"
2.添加NFC调用js
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 = false;//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']
];
// 要写入的数据
let text = '{id:666,name:aaa,stie:ffff.com}';
let readResult = '';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 NFCsetTimeout(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NFCnfcAdapter.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()) {if (readyWriteData) {console.log("----------我在写1-------------")that.write(intent);readyWriteData = false;} else if (readyRead) {console.log("----------我在读1-------------")that.read(intent);readyRead = false;}}},write(intent) { //写代码console.log("----------我在写-------------")try {toast('请勿移开标签 正在写入...');console.log("text=" + text);let textBytes = plus.android.invoke(text, "getBytes");// image/jpeg text/plain let textRecord = new NdefRecord(NdefRecord.TNF_MIME_MEDIA,plus.android.invoke("text/plain", "getBytes"), plus.android.invoke("", "getBytes"), textBytes);let message = new NdefMessage([textRecord]);let Ndef = plus.android.importClass('android.nfc.tech.Ndef');let NdefFormatable = plus.android.importClass('android.nfc.tech.NdefFormatable');let tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);let ndef = Ndef.get(tag);if (ndef != null) {// 待写入的数据长度let size = message.toByteArray().length;ndef.connect();if (!ndef.isWritable()) {toast('tag不允许写入！');return;}if (ndef.getMaxSize() < size) {toast('文件大小超出容量！');return;}ndef.writeNdefMessage(message); //写入数据toast('写入数据成功！');return;} else {let format = NdefFormatable.get(tag);if (format != null) {try {format.connect();format.format(message);toast('格式化tag并且写入message');return;} catch (e) {toast('格式化tag失败.');return;}} else {toast('Tag不支持NDEF');return;}}} catch (e) {toast('写入失败');console.log("error=" + e);}},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 idlet bytesId = intent.getByteArrayExtra(NfcAdapter.EXTRA_ID);let nfc_id = that.byteArrayToHexString(bytesId);console.log('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vuexstore.commit('setNfcReadTxt', data);toast('NFC 数据：' + data);console.log('NFC 数据：',data);readResult = data;}else{toast('没有读取到数据');}},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！');},// close: function(){
// },setTxt: function(txt){if(noNFC){toast('请检查设备是否支持并开启 NFC 功能！');return;}text = txt;}
}
function toast(content){uni.showToast({title: content,icon: 'none'})
}
3.页面引用调用
<template><view class="nfc"><nav-bar title="NFC模板" ></nav-bar><textarea class="txtarea" disabled :value="$store.getters.nfcreadtxt" placeholder="这是读取到的nfc的数据"/><button class="btn" @tap="read()">读取NFC</button><textarea class="txtarea" v-model="writeTxt" maxlength="124" placeholder="这是输入写入的nfc的数据"/><button class="btn" @tap="write()">写入NFC</button></view>
</template><script>// nfc 输入最大数字长度为124位，文字为41位// 如果需要写入读取之后的回调，可以使用mixins混入read-write-nfc.jsimport NavBar from '../../common/components/navbar/NavBar.vue'import nfctest from "@/common/js/nfc/read-write-nfc.js"export default {data() {return {writeTxt:''}},components:{NavBar},mounted() {},onLoad() {// 开启nfc监听nfctest.listenNFCStatus();},methods: {read(){// 调用 js 文件里面的方法nfctest.readData();},write(){// 调用 js 文件里面的方法nfctest.setTxt(this.writeTxt);nfctest.writeData();},}}
</script><style scoped lang="less">.nfc{padding: 20rpx;.txt{height: 240rpx;line-height: 50rpx;font-size: 32rpx;}.txtarea{width: 100%;min-height: 240rpx;border: 1px solid #f0f0f0;}.btn{border: none;background-color: #1b85e9;color: #fff;margin: 20rpx 0;}}
</style>