title: Show multiple notifications per day in android using Alarm manager
body: <p>I want to show 2 notifications per day in my application in 2 specific time, until now i'm just able to show one notification.
  This is my code, how can i show multiple notification.
  one at 7 AM , and the other at 6 PM for example?</p>
  
  <pre><code>        Intent myIntent = new Intent(Calender.this, MyAlarmService.class);
           int id = (int) System.currentTimeMillis();
  
          pendingIntent = PendingIntent.getService(Calender.this, id,
                  myIntent, Notification.FLAG_ONLY_ALERT_ONCE);
  
          AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
  
          Calendar timeToSet = Calendar.getInstance();
          timeToSet.set(Calendar.HOUR_OF_DAY, hour);
  
          alarmManager.set(AlarmManager.RTC_WAKEUP,
                  timeToSet.getTimeInMillis(), pendingIntent); 
  </code></pre>
  
  <p>and i called this in MyAlarmService in the onStart method</p>
  
  <pre><code>     final Calendar c = Calendar.getInstance();
  
  
      Notification note = new Notification(R.drawable.icon,
              getString(R.string.app_name), System.currentTimeMillis());
      Intent intent = new Intent(this, Calender.class);
      PendingIntent i = PendingIntent.getActivity(this, 0, intent,
              Notification.FLAG_ONGOING_EVENT);
      note.setLatestEventInfo(this, getString(R.string.app_name),
              "Some String", i);
      note.flags |= Notification.FLAG_AUTO_CANCEL;
      NOTIFY_ME_ID =  System.currentTimeMillis();
      mgr.notify((int) NOTIFY_ME_ID, note);
  </code></pre>