Vent-App/common/util/hexiii-nfc.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.MifareClassic'],
    ['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 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()) {
            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-------------")
        let that = this
        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);
            console.log(tag.toString(), '90909')
            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);
                console.log(format,'format-----------------------')
                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 id
        let 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vuex
            store.commit('setNfcReadTxt', data);
            toast('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！');
    },
   
    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'
    })
}