Question

我正在尝试在我的Android应用程序中开发打印选项，它将使用WIFI通过网络打印机从Android设备打印文本文件。为此，我使用带有IP地址和打印机端口号的套接字对象。我的问题是，在我的文本文件中，文本对齐如下：

CV of Md. Akash
Name: Akash
Age: 30

但是在打印之后，输出将如下所示：

 CV of Md. Akash
                Name: Akash
                           Age: 30

N.B。我的代码： 1.数据收集代码并将其保存为SD卡中的文本

  StringBuilder sb = new StringBuilder();
  sb.append("CV of Md. Akash"+System.getProperty("line.separator"));
  sb.append("Name: Akash"+System.getProperty("line.separator"));
  sb.append("Age: 30");
  String textBody = sb.toString();
  //to save the textBody in SD card as txt file
  File file = new File(Environment.getExternalStorageDirectory() +"/CvAkash.txt");
    FileWriter fr = null;
    try {
        fr = new FileWriter(file);
        fr.write(textBody );
    } catch (IOException e) {
        e.printStackTrace();
    }finally{
        try {
            fr.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

2。对于打印，我使用了此链接（Send files to WiFi printer）

中给出的以下代码

               int port = 9100;
               File file = new File(Environment.getExternalStorageDirectory()+"/CvAkash.txt"); 
            try 
            {

             client = new Socket("192.168.1.7", port);

             byte[] mybytearray = new byte[(int) file.length()]; //create a byte array to file

             fileInputStream = new FileInputStream(file);
             bufferedInputStream = new BufferedInputStream(fileInputStream);  

             bufferedInputStream.read(mybytearray, 0, mybytearray.length); //read the file

             outputStream = client.getOutputStream();

             outputStream.write(mybytearray, 0, mybytearray.length); //write file to the output stream byte by byte
             outputStream.flush();
             bufferedInputStream.close();
             outputStream.close();
             client.close();



            } catch (UnknownHostException e) {
             e.printStackTrace();
            } catch (IOException e) {
             e.printStackTrace();
            }
            return null;

Android：从Android设备打印机打印后文本对齐方式发生变化

0 个答案: