【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 stubDatagramSocket 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 blocke.printStackTrace();}b.setOnClickListener(new OnClickListener() {// TODO Auto-generated method stub@Overridepublic 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 blocke.printStackTrace();}try {System.out.println("port:" + ds.getLocalPort());ds.send(dp);et.setText("");} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}});    }@Overrideprotected void onStop() {// TODO Auto-generated method stubds.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.

更多相关文章

随机推荐