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项目中需要用到android设备通过USB连接热敏打印机打印图文混排的小条，总结一下。

外部主要是用这个方法来打印：

/**     * 打印核验小条     * 子线程中运行     */    private static int times = 0;    public void printVerifyData(String tmpName,                                String tmpIdNo,                                String curName,                                String idcardNo,                                String headerPic) {        while(!isConnect){            isConnect = doConnect();            times ++ ;            Log.d("lixm","isConnect = " + isConnect + ", times = " + times);            if(times >= TRY_COUNT){                // todo send error                sendPrintError();                return;            }            try {                Thread.sleep(1000);            } catch (InterruptedException e) {                e.printStackTrace();            }        }        ArrayList
   
     data = new ArrayList<>(); // 用于装载打印数据        try {            PrinterWriter printer = new PrinterWriter58mm();            // printer.init();  // 初始化打印机            printer.setAlignCenter();            data.add(printer.getDataAndReset());            // 打印标题            printer.setEmphasizedOn();            printer.setFontSize(1);            printer.print(Const.VALUE.TITLE);            printer.printLineFeed();            printer.setFontSize(0);            printer.setEmphasizedOff();            // 打印虚线            printer.setAlignCenter();            printer.printDottedLine();            printer.printLineFeed();            data.add(printer.getDataAndReset());            // 打印了一个图片            printer.setAlignCenter();            ArrayList
    
      image1 = printer.getImageByte(headerPic);            if(image1 == null || image1.size() == 0){                ToastUtils.showShort("照片转换异常，请重新打印！");                sendPrintError();                return;            }            data.addAll(image1);            // 打印虚线            printer.printDottedLine();            printer.printLineFeed();  // 输出并换行            printer.setLineHeight(80);   // 设置行间距            printer.setEmphasizedOn();            printer.printInOneLine("姓名：", tmpName, 0);            printer.printLineFeed();            printer.printInOneLine("身份证号码：", tmpIdNo, 0);            printer.printLineFeed();            printer.printInOneLine("凭证有效期：", TimeUtils.date2String(new Date(),new SimpleDateFormat("yyyy年MM月dd日")), 0);            printer.printLineFeed();            printer.setEmphasizedOff();            // 打印虚线            printer.setAlignCenter();            printer.printDottedLine();            printer.printLineFeed();  // 输出并换行            data.add(printer.getDataAndReset());            // todo 这里打印二维码            String oriString = curName+"|" +idcardNo;            String qrString = Base64.encodeToString(oriString.getBytes("UTF-8"),Base64.NO_WRAP);            Log.d("lixm","qrString = " + qrString);            Bitmap qrCodeImage = QRCodeUtil.createQRCodeBitmap(qrString, 300, "0");            //byte[] qrData = PrinterUtils.decodeBitmap(qrCodeImage);            ArrayList
     
       qrData = printer.getImageByte(qrCodeImage);            data.addAll(qrData);            // 打印虚线            printer.setAlignCenter();            printer.printDottedLine();            printer.printLineFeed();  // 输出并换行            printer.setAlignLeft();            printer.setEmphasizedOn();            String tips1 = "     提示：凭二维码扫码进站，仅限本人使用，"+ "\n";            String tips2 = "     如遇遗失请重新补打凭证"+"\n";            printer.print(tips1);            printer.print(tips2);            printer.setEmphasizedOff();            printer.printLineFeed();            printer.printLineFeed();            printer.feedPaperCutPartial();  // 切纸            data.add(printer.getDataAndClose());            boolean isPrintResult = printTest(data);  // 打印数据            //printer.close();            //printer = null;            if(isPrintResult){                BusEvent busEvent = new BusEvent();                busEvent.action = "printer_completed";                busEvent.data = "ok";                EventBus.getDefault().post(busEvent);            }else{                sendPrintError();            }        } catch (IOException e) {            LogUtils.file(e.getCause() + "--" + e.getMessage());            sendPrintError();        }    }
     
    
   

完整代码请点击

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