title: update notification text every second
body: <p>I want to update the text of a notification every second. i wrote this code</p>
  
  <pre><code>new Handler().postDelayed(new Runnable() {
      @Override
      public void run() {
          // TODO Auto-generated method stub
          builder.setSmallIcon(R.drawable.ic_launcher);
          builder.setContentTitle("Text");
              builder.setContentText("value updated every 1 second");
          }
  
      }           
  }, 1*1000);
  </code></pre>
  
  <p>but the value is not updated every 1 second but only one time. why? how can i do this?</p>