package com.bgycc.smartcanteen.qrcode; import android_serialport_api.SerialPort; public class T3 extends BaseQRCodeScan { private SerialPort serial; public T3(String filePath) throws Exception { serial = new SerialPort(filePath, 115200, 0); setup(serial.getInputStream()); } @Override public void close() { super.close(); if (serial != null) { serial.close(); } } }