EPSON android SDK 不适用于 TM-T81 系列

Question

我是从那里下载 epson android sdk https://download.epson-biz.com/modules/pos/index.php?page=single_soft&cid=5228&pcat=7&pid=4179。 我有一台 Epson TM-T81 系列打印机，当我尝试将此 sdk 与我的打印机连接时，它显示错误代码（ERR_UNSUPPORTED），但是当我将打印机系列更改为 TM-T82 或其他打印机系列时，它可以正常工作我的 TM-T81 打印机，但是当我选择 TM-T81 时它不工作。这是什么原因？

Answer 1

你可以这样使用。这个答案会帮助你。

public boolean initializeObject(Printer printerSeries) {

    try {

       // mPrinter=new Printer(Printer.TM_T88,Printer.LANG_EN,mContext);
        or
         mPrinter=new Printer(printerSeries,Printer.LANG_EN,mContext);
    }
    catch (Exception e) {
        ShowMsg.showException(e, "Printer", mContext);
        return false;
    }

    mPrinter.setReceiveEventListener(new com.epson.epos2.printer.ReceiveListener() {
        @Override
        public void onPtrReceive(Printer printer, int i, PrinterStatusInfo printerStatusInfo, String s) {

            runOnUiThread(new Runnable() {
                @Override
                public synchronized void run() {
                    disconnectPrinter();
                    new Thread(new Runnable() {
                        @Override
                        public void run() {
                            disconnectPrinter();
                        }
                    }).start();
                }
            });
        }
    });
    return true;
}

public void finalizeObject() {
    if (mPrinter == null) {
        return;
    }

    mPrinter.clearCommandBuffer();

    mPrinter.setReceiveEventListener(null);

    mPrinter = null;
}

public boolean printData(String receiptPrintIP) {
    if (mPrinter == null) {
        return false;
    }

    if (!connectPrinter(receiptPrintIP)) {
        return false;
    }

    PrinterStatusInfo status = mPrinter.getStatus();
    if (!isPrintable(status)) {
        ShowMsg.showMsg(printPOS2Help.makeErrorMessage(status), mContext);
        try {
            mPrinter.disconnect();
        }
        catch (Exception ex) {
            // Do nothing
        }
        return false;
    }

    try {
        mPrinter.sendData(Printer.PARAM_DEFAULT);
    }
    catch (Exception e) {
        ShowMsg.showException(e, "sendData", mContext);
        try {
            mPrinter.disconnect();
        }
        catch (Exception ex) {
            // Do nothing
        }
        return false;
    }

    return true;
}

public boolean connectPrinter(String receiptPrintIP) {
    boolean isBeginTransaction = false;
    if (mPrinter == null) {
        return false;
    }

    try {
        mPrinter.connect(receiptPrintIP, Printer.PARAM_DEFAULT);
    }
    catch (Exception e) {
        ShowMsg.showException(e, "connect", mContext);
        return false;
    }

    try {
        mPrinter.beginTransaction();
        isBeginTransaction = true;
    }
    catch (Exception e) {
        ShowMsg.showException(e, "beginTransaction", mContext);
    }

    if (isBeginTransaction == false) {
        try {
            mPrinter.disconnect();
        }
        catch (Epos2Exception e) {
            // Do nothing
            return false;
        }
    }

    return true;
}