Android开发中Socket通信的基本实现方法讲解

import java.io.IOException;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class SimpleServer {

  /**
   * @param args
   * @throws IOException 
   */
  public static void main(String[] args) throws IOException {
    // TODO Auto-generated method stub

    //创建一个ServerSocket,用于监听客户端socket的连接请求
    ServerSocket ss=new ServerSocket(30000);
    //采用循环不断接受来自客户端的请求,服务器端也对应产生一个Socket
    while(true){
      Socket s=ss.accept();
      OutputStream os=s.getOutputStream();
      os.write("您好，您收到了服务器的新年祝福！n".getBytes("utf-8"));
      os.close();
      s.close();
  }

  }}

package my.learn.tcp;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
import java.net.UnknownHostException;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.EditText;

public class SimpleClient extends Activity {
  private EditText show;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    show = (EditText) findViewById(R.id.show);

    try {

      Socket socket = new Socket("自己计算机的IP地址", 30000);
      //设置10秒之后即认为是超时
      socket.setSoTimeout(10000);
      BufferedReader br = new BufferedReader(new InputStreamReader(
          socket.getInputStream()));
      String line = br.readLine();

      show.setText("来自服务器的数据："+line);

      br.close();
      socket.close();

    } catch (UnknownHostException e) {
      // TODO Auto-generated catch block
      Log.e("UnknownHost", "来自服务器的数据");
      e.printStackTrace();
    } catch (IOException e) {
      Log.e("IOException", "来自服务器的数据");
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
  }
}

<uses-permission android:name="android.permission.INTERNET"/>