Android学习笔记_Socket编程(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();
        }       
    }
}