【android】与pc机开展UDP通信

【android】与pc机进行UDP通信
这里pc作为server接受小心并显示出来。
而android的作为客户端发送消息。

首先：服务端没有什么好说的。
直接上代码：

public class Server {	/**	 * @param args	 * @throws IOException 	 */	public static void main(String[] args) throws IOException {		// TODO Auto-generated method stub		DatagramSocket ds = new DatagramSocket(10000);		while(true){			byte [] b = new byte[1024];			DatagramPacket dp = new DatagramPacket(b,b.length);			ds.receive(dp);			System.out.println("prot: "+dp.getPort());			System.out.println("data: "+new String(dp.getData(),0,dp.getLength(),"utf-8"));		}	}}

这里重点说android的客户端：
一说到网络技术别忘记在manifest.xml设定网络访问权限

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

其他的也不多说直接上代码吧

public class AndroidUdpActivity extends Activity {    DatagramSocket ds = null;    DatagramPacket dp = null;    Button b = null;    EditText et = null;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                b = (Button) this.findViewById(R.id.button1);        et = (EditText) this.findViewById(R.id.editText1);        try {			ds = new DatagramSocket(54999);		} catch (SocketException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}						b.setOnClickListener(new OnClickListener() {			// TODO Auto-generated method stub			@Override			public void onClick(View v) {     //				String s = "welcome to c....";				String s = et.getText().toString();								byte [] buf = s.getBytes();				int length = buf.length;								try {					dp = new DatagramPacket(buf,length,InetAddress.getByName("10.0.2.2"),10000);				} catch (UnknownHostException e) {					// TODO Auto-generated catch block					e.printStackTrace();				}				try {					System.out.println("port:" + ds.getLocalPort());					ds.send(dp);					et.setText("");				} catch (IOException e) {					// TODO Auto-generated catch block					e.printStackTrace();				}			}		});				    }	@Override	protected void onStop() {		// TODO Auto-generated method stub		ds.close();		super.onStop();	}}

在layout/main.xml中就一个edittext和button。
这里重点就是虚拟机所在pc机的IP为10.0.2.2.