Continuously updating GUI in java Android

I am a new java programmer in Eclipse for Android platform. I am working on an android app which will receive multicast data through wifi interface and display the same in a TextView. The data will be updated every 1 sec.

I have the code as below. But i am facing problem in updating the GUI.in this code the network receive and gui are done in same thread i.e. main thread that's why my application in hanging.

I had tried using AsynchTask but could not succeed because i dont know how exactly to use it.

package com.example.cdttiming;  import java.io.IOException; import java.net.DatagramPacket; import java.net.InetAddress; import java.net.MulticastSocket; import java.net.UnknownHostException;  import android.app.Activity; import android.content.Context; import android.net.wifi.WifiManager; import android.os.Bundle; import android.view.Menu; import android.widget.EditText;    public class MainActivity extends Activity {     @Override     protected void onCreate(Bundle savedInstanceState)     {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         EditText Seconds;         Seconds =(EditText)findViewById(R.id.Seconds);          WifiManager wm = (WifiManager)getSystemService(Context.WIFI_SERVICE);         WifiManager.MulticastLock multicastLock = wm.createMulticastLock("mydebuginfo");         multicastLock.setReferenceCounted(true);         multicastLock.acquire();          InetAddress ia = null;         byte[] buffer = new byte[65535];         MulticastSocket ms = null;         int port = 4321;         try         {             ia = InetAddress.getByName("226.1.1.1");             DatagramPacket dp = new DatagramPacket(buffer, buffer.length,ia,port);             ms = new MulticastSocket(port);             ms.setReuseAddress(true);             ms.joinGroup(ia);              while (true)             {                 ms.receive(dp);                 String s = new String(dp.getData(),0,dp.getLength());                 Seconds.setText(s);             }             }         catch (UnknownHostException e)         {             Seconds.setText(e.getMessage());         }         catch (IOException e)         {             Seconds.setText(e.getMessage());         }     }      @Override      public boolean onCreateOptionsMenu(Menu menu)     {         // Inflate the menu; this adds items to the action bar if it is present.         getMenuInflater().inflate(R.menu.main, menu);         return true;     } } 

Can anyone tell me how to use above code so that I may receive the data every second and display that in the TextView?

Thank u all in advance

Source: http://stackoverflow.com/questions/17631795/continuously-updating-gui-in-java-android

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