如何从android应用程序中启动ESC/POS裁纸机

Question

我正在开发一个销售点android应用程序。我的Tysso prp188打印机是通过以太网连接的。我可以在打印机上打印，但我不知道打印完成后如何剪纸。

我要打印的字符串如下:

                msg = "n" + 
                            "                   KOT n"+
                            "Voucher No: " + vno + "  t  Order No: " + ono + "n" + 
                            "Waiter Name: " + wname + " t  Table: " + tno + "n" + 
                            "Time: " + time + " n" +
                            "- - - - - - - - - - - - - - - - - - - - - - - -n" +
                            "       Item                          Quantity  n" +
                            "- - - - - - - - - - - - - - - - - - - - - - - -n" + 
                            "n" + 
                            itemslist +
                            "n- - - - - - - - - - - - - - - - - - - - - - - -n" + 
                            "nnnnnnnn";

，这就是我打印它的方式。

private class MyPrinter extends AsyncTask<String, String, String>
{
    Socket sock;
    PrintWriter oStream;
    DataInputStream is;
    ProgressDialog pDialog = null;
    Context context;
    public MyPrinter(Context context)
    {
        this.context = context;
    }
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        pDialog = new ProgressDialog(CustomerInformation.this);
        pDialog.setTitle("Print Order");
        pDialog.setMessage("Please Wait ...");
        pDialog.show();
    }
    protected String doInBackground(String... params) {
        try 
        {
            sock = new Socket(params[0], Integer.parseInt(params[1]));
            sock.setSoTimeout(300);
            is = new DataInputStream(sock.getInputStream());
            if(sock.getRemoteSocketAddress() != null)
            {
            oStream = new PrintWriter(sock.getOutputStream());
            oStream.println(params[2]);
            }
            else
            {
                Log.i("cycle", "Remote Socket Address");
            }

            oStream.flush();
            oStream.close();
            sock.close();
        }
        catch (UnknownHostException e) 
        {
            Log.i("cycle", "00");
            e.printStackTrace();
        } 
        catch (IOException e) 
        { 
            Log.i("cycle", "11");
            e.printStackTrace();
        }
        finally{
        }
        return null;
    }
    @Override
    protected void onPostExecute(String result) {
        super.onPostExecute(result);
        if(pDialog != null)
            if(pDialog.isShowing())
                pDialog.dismiss();

        finish();
    }
}

我不确定，但我认为要解决我的问题，我必须转换我的文本打印在某种编码，这台打印机理解，所以如何做到这一点，我不知道!!

Answer 1

感谢大家。我是这样做的:

oStream.println(new char[]{0x1D, 0x56, 0x41, 0x10});

Answer 2

在打印文本后使用以下命令剪纸:

oStream.write(0x1D);
oStream.write(86);
oStream.write(48);              
oStream.write(0);

Answer 3

实际上我发送了这个

 oStream.println(new char[]{0x1D, 0x56, 66, 0x00});

，它剪纸。不需要在文本中添加空行。这将自动添加换行和剪切。

Answer 4

尝试将自动切割机的转义码添加到打印字符串的末尾。您可能需要做一个char(0x1B)。以得到正确的输出形式。这个链接可能会帮助你在整数和字符之间的转换:我们可以将整数转换成字符

Answer 5

显示新行

osStream.println("nn");
osStream.println(new char[]{29,86,66});

或

printWriter.println(new char[]{0x1D, 0x56, 0x42});