DatagramSocket广播使用附HandleThread使用

来源：互联网发布：武侠大宗师java gm工具编辑：程序博客网时间：2024/05/21 09:20

发送广播的类

[java] view plain copy
package com.example.socketsendbroadcast;  
  
import java.net.DatagramPacket;  
import java.net.DatagramSocket;  
import java.net.InetAddress;  
import android.os.Bundle;  
import android.os.Handler;  
import android.os.HandlerThread;  
import android.app.Activity;  
import android.util.Log;  
  
public class SocketSendBroadActivity extends Activity {  
    protected static final String TAG = "SocketSendBroadActivity";  
    private Handler mHandler;  
      
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        Log.v(TAG, "onCreate");  
        setContentView(R.layout.activity_socket_send_broad);  
        //通过Handler启动线程    
        HandlerThread handlerThread = new HandlerThread("threadsendbroad");  
        handlerThread.start();  
        mHandler =  new Handler(handlerThread.getLooper());  
        mHandler.post(mRunnable);    
    }  
  
    private Runnable mRunnable = new Runnable() {    
          
        public void run() {  
            Log.v(TAG, "run...");  
            try {  
                sendBroadcast();  
            } catch (Exception e) {  
                // TODO Auto-generated catch block  
                e.printStackTrace();  
            }  
        }    
            
    };    
    public static void sendBroadcast()throws Exception{  
        Log.v(TAG, "sendBroadcast");  
        DatagramSocket socket;  
        DatagramPacket packet;  
        byte[] data = "helloworld".getBytes();  
          
        socket = new DatagramSocket();  
        socket.setBroadcast(true);  
        packet = new DatagramPacket(data,data.length,InetAddress.getByName("255.255.255.255"),8600);    //指定端口8600  
        for(int i = 0 ; i < 20 ; i++){  
            Thread.sleep(2000);  
            socket.send(packet);  
        }  
    }  
}  

接受广播的类

[java] view plain copy
package com.example.socketreceiverbroadcase;  
  
import android.os.Bundle;  
import android.app.Activity;  
import android.content.Intent;  
import android.util.Log;  
  
public class SocketReceiverBroadcastActivity extends Activity {  
    private static final String TAG = "SocketReceiverBroadcastActivity";  
      
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        Log.v(TAG, "onCreate");  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_socket_receiver_broadcast);  
        Intent intent = new Intent();  
        intent.setClass(this, ReceiverService.class);  
        this.startService(intent);  
    }  
  
}  

[java] view plain copy
package com.example.socketreceiverbroadcase;  
  
import java.net.DatagramPacket;  
import java.net.DatagramSocket;  
import android.app.Service;  
import android.content.Intent;  
import android.os.Handler;  
import android.os.HandlerThread;  
import android.os.IBinder;  
import android.util.Log;  
  
public class ReceiverService extends Service{  
    protected static final String TAG = "ReceiverService";  
    private Handler mHandler;  
    @Override  
    public IBinder onBind(Intent intent) {  
        // TODO Auto-generated method stub  
        return null;  
    }  
  
    @Override  
    public void onCreate() {  
        super.onCreate();  
        //通过Handler启动线程    
        HandlerThread handlerThread = new HandlerThread("threadreceiverbroadcast");  
        handlerThread.start();  
        mHandler =  new Handler(handlerThread.getLooper());  
        mHandler.post(mRunnable);    
    }  
  
    private Runnable mRunnable = new Runnable() {    
          
        public void run() {  
            Log.v(TAG, "run...");  
            try {  
                receiveBroadcast();  
            } catch (Exception e) {  
                // TODO Auto-generated catch block  
                e.printStackTrace();  
            }  
        }    
            
    };    
      
    public static void receiveBroadcast()throws Exception{  
        byte[] buffer = new byte[99];  
        DatagramSocket server = new DatagramSocket(8600);  
        DatagramPacket packet = new DatagramPacket(buffer , buffer.length);  
        for(;;){  
            Log.v(TAG, "receiveBroadcast");  
            server.receive(packet);  
            String s = new String(packet.getData( ), 0, packet.getLength( ));  
            Log.v(TAG, "packet.getAddress = " + packet.getAddress() +  
                    " at port " + packet.getPort() +  
                    " get content " + s);  
        }  
    }  
}  

测试结果：

[plain] view plain copy
01-01 22:58:54.990: V/SocketReceiverBroadcastActivity(7138): onCreate  
01-01 22:58:55.110: V/ReceiverService(7138): run...  
01-01 22:58:55.120: V/ReceiverService(7138): receiveBroadcast  
01-01 22:59:02.130: V/ReceiverService(7138): packet.getAddress = /192.168.30.106 at port 49869 get content helloworld  
01-01 22:59:02.130: V/ReceiverService(7138): receiveBroadcast  
01-01 22:59:04.180: V/ReceiverService(7138): packet.getAddress = /192.168.30.106 at port 49869 get content helloworld  
01-01 22:59:04.180: V/ReceiverService(7138): receiveBroadcast  
01-01 22:59:10.120: V/ReceiverService(7138): packet.getAddress = /192.168.30.106 at port 49869 get content helloworld  
01-01 22:59:10.120: V/ReceiverService(7138): receiveBroadcast  
01-01 22:59:12.160: V/ReceiverService(7138): packet.getAddress = /192.168.30.106 at port 49869 get content helloworld  
01-01 22:59:12.160: V/ReceiverService(7138): receiveBroadcast  
01-01 22:59:14.110: V/ReceiverService(7138): packet.getAddress = /192.168.30.106 at port 49869 get content helloworld  
01-01 22:59:14.110: V/ReceiverService(7138): receiveBroadcast  

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DatagramSocket广播使用 附HandleThread使用

DatagramSocket广播使用附HandleThread使用