发送和接收数据报套接字上的UDP数据包android

我有两个类，一个发件人类，另一个是接收者类。发送和接收应用程序都在几秒钟后停止并关闭。我的发件人类是：发送和接收数据报套接字上的UDP数据包android

public class MainActivity extends Activity { 
InetAddress receiverAddress; 
DatagramSocket datagramSocket; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 


    try { 
     datagramSocket = new DatagramSocket(4444); 
    } catch (SocketException e1) { 
     // TODO Auto-generated catch block 
     e1.printStackTrace(); 
    } 

    byte[] buffer = "".getBytes(); 
    byte[] address="192.168.1.101".getBytes(); 

    try { 
     receiverAddress = InetAddress.getByAddress(address); 
    } catch (UnknownHostException e1) { 
     // TODO Auto-generated catch block 
     e1.printStackTrace(); 
    } 

    DatagramPacket packet = new DatagramPacket(
      buffer, buffer.length, receiverAddress, 4444); 

    try { 
     datagramSocket.send(packet); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 




}

我接收或听力课是：事先的帮助

public class MainActivity extends Activity { 
DatagramSocket datagramSocket; 
DatagramPacket packet; 
TextView tv1; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    tv1=(TextView)findViewById(R.id.textView1); 
    try { 
     datagramSocket = new DatagramSocket(80); 
    } catch (SocketException e1) { 
     // TODO Auto-generated catch block 
     e1.printStackTrace(); 
    } 

    byte[] buffer = new byte[10]; 
    packet = new DatagramPacket(buffer, buffer.length); 

    try { 
     datagramSocket.receive(packet); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
    byte[] buff = packet.getData(); 

tv1.setText(buff.toString()); 

}

感谢。

来源

2013-08-25 Ameer Humza

我认为你必须在单独的线程或新线程上运行这些数据报事务，尽管我不确定这是否能解决你的问题 – kabuto178

你的logcat中有什么？ –