我正在开发一个应用程序,在我的手机中,我通过IP地址和端口号将文件发送到WiFi打印机,它们是.txt,.png,.jpg,.doc.它们应该从打印机打印出来.我试过以下代码,但它只给我输出.txt文件.获得所有类型文件的输出需要进行哪些更改？请帮忙…

import java.io.BufferedInputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.OutputStream;

import java.net.Socket;

import java.net.UnknownHostException;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

public class MainActivity extends Activity {

private Socket client;

private FileInputStream fileInputStream;

private BufferedInputStream bufferedInputStream;

private OutputStream outputStream;

private Button button;

private TextView text;

private EditText etIp, etPort;

int port=0;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

button = (Button) findViewById(R.id.button1); //reference to the send button

text = (TextView) findViewById(R.id.textView1); //reference to the text view

etIp = (EditText) findViewById(R.id.editText1);

etPort = (EditText) findViewById(R.id.editText2);

//Button press event listener

button.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

//create file instance

port=Integer.parseInt(etPort.getText().toString());

File file = new File("/mnt/sdcard/bluetooth/AnyFile.txt");

try

{

client = new Socket(etIp.getText().toString(), 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();

text.setText("File Sent");

} catch (UnknownHostException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}

});

}

}

Manifest file