android开发socket编程之udp发送实例分析

概述本文实例讲述了android开发socket编程之udp发送实现方法。分享给大家供大家参考。具体分析如下：

本文实例讲述了androID开发socket编程之udp发送实现方法。分享给大家供大家参考。具体分析如下：

需要实现的功能：采用udp下的socket编程，当按下确认键，模拟器发送文本框数据，pc机上的网络调试助手接收

一、环境：

win7 + eclipse + sdk

二、代码：

package test.soket; //import com.test_button.R; import java.io.DataOutputStream; import java.io.IOException; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetAddress; import java.net.socket; import java.net.socketException; import java.net.UnkNownHostException; import androID.app.Activity; import androID.os.Bundle; import androID.vIEw.VIEw; import androID.Widget.button; import androID.Widget.TextVIEw; public class test_socket extends Activity {  public static TextVIEw show;  public static button press;  public static boolean flag;  private static final int MAX_DATA_PACKET_LENGTH = 40;  private byte[] buffer = new byte[MAX_DATA_PACKET_LENGTH];  private DatagramPacket dataPacket;  private DatagramSocket udpSocket;  /** Called when the activity is first created. */  @OverrIDe  public voID onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentVIEw(R.layout.main);   //开辟控件空间   show = (TextVIEw)findVIEwByID(R.ID.editText1);   press = (button)findVIEwByID(R.ID.button1);   flag = false;   //soket_send thread = new soket_send();   //thread.init();   //thread.start();   try   {    udpSocket = new DatagramSocket(5554);   }   catch (SocketException e)   {    // Todo auto-generated catch block    e.printstacktrace();   }   dataPacket = new DatagramPacket(buffer,MAX_DATA_PACKET_LENGTH);   String str = "hello,jdh"; //这是要传输的数据   byte out [] = str.getBytes(); //把传输内容分解成字节   dataPacket.setData(out);   dataPacket.setLength(out.length);   dataPacket.setPort(5554);   try   {    InetAddress broadcastAddr = InetAddress.getByname("192.168.0.248");    dataPacket.setAddress(broadcastAddr);    udpSocket.send(dataPacket);   }   catch (IOException e)   {    // Todo auto-generated catch block    e.printstacktrace();   }       press.setonClickListener(new button.OnClickListener()   {    @OverrIDe    public voID onClick(VIEw v)    {     flag = true;     /*     String str = "hello,jdh"; //这是要传输的数据     byte out [] = str.getBytes(); //把传输内容分解成字节     dataPacket.setData(out);     dataPacket.setLength(out.length);     */     //获得输入框文本     CharSequence str =test_socket.show.getText();     byte out[] = str.toString().getBytes();     dataPacket.setData(out);     dataPacket.setLength(out.length);     try     {      InetAddress broadcastAddr = InetAddress.getByname("192.168.0.248");      dataPacket.setAddress(broadcastAddr);      udpSocket.send(dataPacket);     }     catch (IOException e)     {      // Todo auto-generated catch block      e.printstacktrace();     }    }   });  } }

界面如下：

注意：在模拟器IP为本机IP，端口为模拟器名称

希望本文所述对大家的AndroID程序设计有所帮助。

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