title: HH:MM:SS Countdowntimer
body: <p>I can't figure out how to make an HH:MM:SS Countdowntimer using Milliseconds.
  I need to make a CountdownTimer telling how many hours, minutes, and seconds remain until the next day. Here is my code:</p>
  
  <pre><code>  final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
     long timer = prefs.getLong("TIME", 86400000);
     new CountDownTimer(timer, 1000) {
  
           public void onTick(long elapsed) {
  
                                          time.setText(elapsed/3600000+":"+elapsed/1440000+":"+elapsed/?);
                                SharedPreferences.Editor editor = prefs.edit();
                                editor.putLong("TIME",elapsed);
                                editor.commit(); 
           }
           public void onFinish() {
  
           }
        }.start();
  </code></pre>
  
  <p>P.S: Also, it will have to save the time left until last check. I look forward urgently to hearing from you guys. Thank you in advance!</p>