uni-app实现NFC读取功能

 // 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 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'] ]; // 要写入的数据 let text = '{id:8888,name:nfc,stie:wangqin.com}'; let readResult = ''; export default { listenNFCStatus: function() { console.log("---------listenNFCStatus--------------") 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]; //重点部分代码 const promise = new Promise((resolve, reject) => { plus.globalEvent.addEventListener('newintent', function() { // 轮询调用 NFC // setTimeout(that.nfcRuning(resolve), 1000); setTimeout(() => { that.nfcRuning(resolve) }, 1000); }); }) nfcAdapter.enableForegroundDispatch(main, pendingIntent, intentFiltersArray, techListsArray); return promise } catch (e) { } }, nfcRuning: function(resolve) { // console.log("--------------nfcRuning---------------") 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; if (package_TECH_DISCOVERED == intent.getAction()) { if (readyRead) { //这里通过read方法拿到NFC数据 const id = that.read(intent); // readyRead = false; //将数据返回出去 resolve(id) } } }, read(intent) { // 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); return nfc_id; }, byteArrayToHexString: function(inarray) { // converts byte arrays to string 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 >> 4) & 0x0f; out += hex[i]; i = inn & 0x0f; out += hex[i]; } return out; }, } function toast(content) { uni.showToast({ title: content, icon: 'none' }) }

   NFC感应  二维码扫描  import testtest from "../../../../../components/hexiii-nfc/hexiii-nfc.js" methods：{ async testNFC() { //这里用异步获取读取到的NFC数据 const nfcId = await testtest.listenNFCStatus(); //console.log(nfcId ) //以下数据是我的业务逻辑代码，如果只要读取NFC数据上面那一行代码即可了。 const arr = [] this.list2.forEach(e => { arr.push(e.code) }) if(!nfcId) return if ( arr.indexOf(nfcId) === -1) { uni.showToast({ icon: 'none', title: '未找到对应巡检点!', duration: 2000 }); } else { uni.showToast({ icon: 'none', title: '识别成功!', duration: 2000 }); uni.navigateTo({ url: `/pages/application/XunJianGuanLi/XunJianRenWu/KaiShiXunJian3/index?id=${this.id}&spotCode=${nfcId}&delta=${this.delta+1}`, }); } }, }