title: ScheduledExecutorService doesnt start
body: <p>I have some Problems with ScheduledExecutorService.
  I want to start the notification after some time. In this case its 10 seconds. But after 10 seconds it doesnt start. All functions beyond this working correctly. </p>
  
  <p>Here is the code:</p>
  
  <pre><code> ScheduledExecutorService scheduler =
                      Executors.newSingleThreadScheduledExecutor();
                   scheduler.schedule(new Runnable() { 
                     public void run() { 
                         Toast.makeText(BService.this, "It works", Toast.LENGTH_SHORT).show();
  
                          // Display a notification about us starting.  We put an icon in the status bar.
                          showNotification();
                      } 
                    }, 10, TimeUnit.SECONDS);
  </code></pre>
  
  <p>Thanks for help
  Roa</p>