Android Socket tcp/udp)

socket编程

public class SocketActivity extends Activity{

private Button startButton=null;

public void onCreate(Bundle saveInstanceState){

super.onCreate(saveInstanceState);

setContentView(R.layout.main);

startButton = (Button)findViewById(R.id.startButton);

startButton.setOnClickListener(new StartSocketListener());

}

class StartSocketListener implements OnClickListener{

public void onClick(){

new ServerThread().start();

}

}

class ServerThread extends Thread{

public void run(){

ServerSocket serverSocket=null;

try{

serverSocket = new ServerSocket(3456);

Socket socket = serverSocket.accept();

InputStream inputStream = socket.getInputStream();

byte buffer [] = new byte[1024];

int temp = 0;

while((temp = inputStream.read(buffer)) !=-1){

System.out.println(new String(buffer,0,temp));

}

}catch(IOException e){

e.printStackTrace();

}finally{

try{

serverSocket.close();

}catch(Exception e){

e.printStackTrace();

}

}

}

}

}

public class TCPClient{

public static void main(String[] args){

try{

Socket socket = new Socket("192.168.0.100",3456);

InputStream inputStream = new FileInputStream("f://file/words.txt");

OutputStream outputStream = socket.getOutputStream();

byte buffer[] = new byte[4*1024];

int temp=0;

while((temp=inputStream.read(buffer))!=-1){

outputStream.write(buffer,0,temp);

}

}catch(Exception e){

e.printStackTrace();

}

}

}

UDP协议下的SocketActivity中的run()方法

public void run(){

try{

DatagramSocket socket=new DatagramSocket(4567);

byte data[]=new byte[1024];

DatagramPacket packet = new DatagramPacket(data,data.length);

socket.receive(packet);

String result= new String(packet.getData(),packet.getOffset(),packet.getLength());

System.out.println("result----->"+result);

}

}

public class UDPClient{

public static void main(String[] args){

try{

DatagramSocket socket = new DatagramSocket(3456);

InetAddress serverAddress = InetAddress.getByName("192.168.1.100");

String str= "hello";

byte data[]=str.getBytes();

DatagramPacket packet = new DatagramPacket(data,data.length,serverAddress,3456);

socket.send(packet);

}catch(Exception e){

e.printStackTrace();

}

}

}