Android Internet How to post a non blocking HTTP request in Android?

This code fetches content from the web without blocking the UI (runs in the background in a Thread). Once finished, it posts a Handler that is picked up by the UI as soon as possible. 

KeyguardManager keyguardManager = (KeyguardManager) getSystemService(Activity.KEYGUARD_SERVICE);

KeyguardLock lock = keyguardManager.newKeyguardLock(KEYGUARD_SERVICE);

lock.disableKeyguard();

this example has been provided by chris from androidsnippets Internet|How to make a non blocking HTTP request in Android?
This code fetches content from the web without blocking the UI (runs in the background in a Thread). Once finished, it posts a Handler that is picked up by the UI as soon as possible. 

import java.io.BufferedInputStream;

import java.io.InputStream;

import java.net.URL;

import java.net.URLConnection;

import org.apache.http.util.ByteArrayBuffer;

public class Iconic extends Activity {

    private String html = "";

    private Handler mHandler;

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

     mHandler = new Handler();

     checkUpdate.start();

    }

    private Thread checkUpdate = new Thread() {

        public void run() {

            try {

                URL updateURL = new URL("http://iconic.4feets.com/update");

                URLConnection conn = updateURL.openConnection();

                InputStream is = conn.getInputStream();

                BufferedInputStream bis = new BufferedInputStream(is);

                ByteArrayBuffer baf = new ByteArrayBuffer(50);

                int current = 0;

                while((current = bis.read()) != -1){

                    baf.append((byte)current);

                }

                /* Convert the Bytes read to a String. */

                html = new String(baf.toByteArray());

                mHandler.post(showUpdate);

            } catch (Exception e) {

            }

        }

    };

    private Runnable showUpdate = new Runnable(){

        public void run(){

         Toast.makeText(Iconic.this, "HTML Code: " + html,

               Toast.LENGTH_SHORT).show();

        }

    };

}