问如何制作简单的Android二进制文本时钟？

EN

package stackoverflow.test.binaryclock;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.widget.TextView;

public class BinaryClock extends Activity implements Runnable
{
    Date currentTime;
     Thread runner;
     final Runnable updater = new Runnable(){
        public void run(){
            updateClockValues();
        };
     };
     final Handler mHandler = new Handler();
    TextView hours_dec;
    TextView mins_dec;
    TextView secs_dec;
    TextView hours_bin;
    TextView mins_bin;
    TextView secs_bin;

    SimpleDateFormat hours_sdf = new SimpleDateFormat("HH");
    SimpleDateFormat mins_sdf = new SimpleDateFormat("mm");
    SimpleDateFormat secs_sdf = new SimpleDateFormat("ss");

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        currentTime = Calendar.getInstance().getTime();
        hours_dec = (TextView) findViewById(R.id.hours_dec);
        mins_dec = (TextView) findViewById(R.id.mins_dec);
        secs_dec = (TextView) findViewById(R.id.secs_dec);
        hours_bin = (TextView) findViewById(R.id.hours_bin);
        mins_bin = (TextView) findViewById(R.id.mins_bin);
        secs_bin = (TextView) findViewById(R.id.secs_bin);
        if (runner == null)
        { //start the song
           runner = new Thread(this);
           runner.start();
        }
      }

 private void updateClockValues() {
        currentTime = Calendar.getInstance().getTime();
        hours_dec.setText(hours_sdf.format(currentTime.getTime()));
        mins_dec.setText(mins_sdf.format(currentTime.getTime()));
        secs_dec.setText(secs_sdf.format(currentTime.getTime()));

        hours_bin.setText(String.valueOf(Integer.toBinaryString(Integer.parseInt((String) hours_dec.getText()))));
        mins_bin.setText(String.valueOf(Integer.toBinaryString(Integer.parseInt((String) mins_dec.getText()))));
        secs_bin.setText(String.valueOf(Integer.toBinaryString(Integer.parseInt((String) secs_dec.getText()))));
    }
@Override
 public void run()
 {
  while (runner != null)
  {
      try
      {
       Thread.sleep(1000);
       Log.i("Tick", "Tock");
      } catch (InterruptedException e) { };
      mHandler.post(updater);
     }
 }
}