hi.i have a button that on click is loading rss feed.i want to load a progress bar until my list opens.i have created a progressbar,it works,but as i press the return button to return to the main menu the progress bar appears again and it doesnt stop(and not even let me see my menu).this is my code

ProgressBar myProgressBar;
  int myProgress = 0;

 /** Called when the activity is first created. */
 @Override
 public void onCreate(Bundle icicle) {
  super.onCreate(icicle);
  setContentView(R.layout.main1);

  Button nea = (Button) findViewById(R.id.nea);
   nea.setOnClickListener(new View.OnClickListener() {
   public void onClick (View view) {
    setContentView(R.layout.bar);

     myProgressBar=(ProgressBar)findViewById(R.id.bar);

           new Thread(myThread).start();

    Intent myIntent = new Intent(view.getContext(), nea.class);
    startActivityForResult(myIntent, 0);


   }  

  });

}

and then,out of the onCreate

  private Runnable myThread = new Runnable(){

    @Override
    public void run() {
     // TODO Auto-generated method stub
     while (myProgress<100){
      try{
       myHandle.sendMessage(myHandle.obtainMessage());
       Thread.sleep(1000);
      }
      catch(Throwable t){
      }
     }
    }

    Handler myHandle = new Handler(){

     public void handleMessage(Message msg) {
      // TODO Auto-generated method stub
      myProgress++;
      myProgressBar.setProgress(myProgress);
     }
    };
      };