Android RFID NFC IC卡读写卡 Demo

package com.maple.demo.serialport;

import android.content.Context;
import android.util.Log;
import android.widget.Toast;

import com.bjw.ComAssistant.MyFunc;
import com.bjw.ComAssistant.SerialHelper;
import com.bjw.bean.ComBean;

import java.text.SimpleDateFormat;
import java.util.Date;



/**
 * Created by maple on 2020-09-08 11:03
 * E-Mail Address：740917401@qq.com
 */
public class CardManager extends SerialHelper {


    public CardManager() {
        super("/dev/ttyS1", 9600);
    }


    Context context;

    public void init(Context context) {
        this.context = context;
        open();
    }

    public void setPortAndBaudRate(String sPort, String iBaudRate) {
        destory();
        setPort(sPort);
        setBaudRate(iBaudRate);
        open();
    }

    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmss");

    public void writeBlock() {
        String time = simpleDateFormat.format(new Date());//14bit
        String timeHex = BinaryHexUtils.stringToHexString(time);
        String sumString = "00231600FFFFFFFFFFFF02" + timeHex;
        String hexString = "20" + sumString;
        send(BinaryHexUtils.hexStringToBytes(hexString + BinaryHexUtils.getHexReverse(BinaryHexUtils.getXorSum(sumString)) + "03"));
    }

    public void open() {
        try {
            super.open();
            Toast.makeText(context, "IC卡模块打开成功，请刷卡", Toast.LENGTH_LONG).show();
        } catch (Exception e) {
            Log.e("tag", "open 错误");
            Toast.makeText(context, "请输入正确的端口跟波特率", Toast.LENGTH_LONG).show();

        }
    }


    public void destory() {
        try {
            stopSend();
            super.close();
        } catch (Exception e) {
            Log.e("", "destory 错误");
        }
    }

    String realCardID = "";

    @Override
    protected void onDataReceived(ComBean comRecData) {
        String data = MyFunc.ByteArrToHex(comRecData.bRec);
        String cardID = data.trim().replace(" ", "");

        Log.i("tag", "收到数据：" + cardID);
        if (cardID.length() == 28) {
            realCardID = cardID;
            readBlock();
        } else if (cardID.length() == 46) {//第二块
            String time = simpleDateFormat.format(new Date());//14bit
            String oldTime = BinaryHexUtils.hexStringToString(cardID.substring(10, 38));
            Log.i("tag", "时间差：" + DateDistance.getDistanceSec(time, oldTime));
            if (DateDistance.getDistanceSec(time, oldTime) > 1) {
                writeBlock();
            }

        } else if (cardID.equals("2000230100DD03")) {
            //写卡成功代表刷卡成功
            Log.i("tag", "卡号：" + realCardID.substring(realCardID.length() - 12, realCardID.length() - 4));
        }
    }


}