Android Socket通信

1.TCP：

xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello"
    />
<Button
    android:id="@+id/buttonStart"
    android:layout_width="300dp"
    android:layout_height="wrap_content"
    android:text="启动服务器端监听"
    />
</LinearLayout>

服务器：

package idea.org;

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

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class Android_Socket extends Activity {
    private Button buttonStart=null;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        buttonStart=(Button)findViewById(R.id.buttonStart);
        buttonStart.setOnClickListener(new buttonListener());
    }
    class buttonListener implements OnClickListener
    {
    /* (non-Javadoc)
     * @see android.view.View.OnClickListener#onClick(android.view.View)
     */
    @Override
    public void onClick(View arg0) {
        // TODO Auto-generated method stub
        new Thread()
        {

            /* (non-Javadoc)
             * @see java.lang.Thread#run()
             */
            @Override
            public void run() {
                // TODO Auto-generated method stub
                ServerSocket serverSocket=null;
                try
                {
                              //创建ServerSocket对象监听6661端口
                    serverSocket=new ServerSocket(6661);
                              //接收tcp连接返回socket对象
                    Socket socket=serverSocket.accept();
                              //获得输入流
                    InputStream inputStream=socket.getInputStream();
                    byte []byteBuffer=new byte[1024];
                    int temp=0;
                              //读取接收的数据
                    while((temp=inputStream.read(byteBuffer))!=-1)
                        System.out.println(new String(byteBuffer,0,temp));
                    socket.close();
                    serverSocket.close();

                }
                catch(IOException e)
                {
                    e.printStackTrace();
                }
            }

        }.start();
    }
   };
}

客户端：

package idea.org;

import java.io.FileInputStream;
import java.io.InputStream;
import java.net.Socket;

public class TCPCient {
    public static void main(String[] args)
    {
        try {
            //定义Socket对象，连接指定IP和指定端口
            Socket socket=new Socket("127.0.0.1",6661);
            InputStream inputStream=new FileInputStream("F://test.txt");
            //从Socket对象获得输出流
            java.io.OutputStream outputStream=socket.getOutputStream();
            int temp=0;
            byte[]buffer=new byte[1024];
            //向输出流中写要发送的数据
            while((temp=inputStream.read(buffer))!=-1)
            {
                outputStream.write(buffer,0,temp);
                System.out.println(new String(buffer,0,temp));
            }
            outputStream.flush();
            socket.close();
        }
        catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

AndroidManifest.xml：（权限）

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="idea.org"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="11" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".Android_Socket"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

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

2.UDP：

服务器：

package idea.org;

import java.io.IOException;
import java.io.InputStream;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class Android_Socket extends Activity {
    private Button buttonStart=null;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        buttonStart=(Button)findViewById(R.id.buttonStart);
        buttonStart.setOnClickListener(new buttonListener());
    }
    class buttonListener implements OnClickListener
    {
    /* (non-Javadoc)
     * @see android.view.View.OnClickListener#onClick(android.view.View)
     */
    @Override
    public void onClick(View arg0) {
        // TODO Auto-generated method stub
        new Thread()
        {

            /* (non-Javadoc)
             * @see java.lang.Thread#run()
             */
            @Override
            public void run() {
                // TODO Auto-generated method stub
                try
                {
                    //创建一个DatagramSocket对象并指定监听的端口
                    DatagramSocket socket=new DatagramSocket(6662);
                    byte[]data=new byte[1024];
                    //创建一个空的DatagramPacket对象用来存放接收到的DatagramPacket
                    DatagramPacket packet=new DatagramPacket(data,data.length);
                    //使用receive方法接收客户端发送的数据
                    socket.receive(packet);
                    String result=new String(packet.getData(),packet.getOffset(),packet.getLength());
                    System.out.println(result);
                }
                catch(IOException e)
                {
                    e.printStackTrace();
                }
            }

        }.start();
    }
   };
}

客户端：

package idea.org;

import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

public class UDPClient {
    public static void main(String []args)
    {
        try
        {
            //创建一个DatagramSocket对象
            DatagramSocket socket=new DatagramSocket();
            //创建一个表示IP地址的InetAddress对象
            InetAddress serverAddress=InetAddress.getByName("192.168.0.5");
            String str="Hello,world!Hello,Everyone!";
            byte[]data=str.getBytes();
            //创建一个用于发送的DatagramPacket对象
            DatagramPacket packet=new DatagramPacket(data,data.length,serverAddress,6662);
            //发送数据
            socket.send(packet);
        }
        catch(Exception e)
        {
            e.printStackTrace();

        }
    }

}