發送和接收數據報套接字上的UDP數據包android

我有兩個類，一個發件人類，另一個是接收者類。發送和接收應用程序都在幾秒鐘後停止並關閉。我的發件人類是：發送和接收數據報套接字上的UDP數據包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(); 
    } 




}

我接收或聽力課是：事先的幫助

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()); 

}

感謝。

來源

2013-08-25 Ameer Humza

我認爲你必須在單獨的線程或新線程上運行這些數據報事務，儘管我不確定這是否能解決你的問題 – kabuto178

你的logcat中有什麼？ –