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.