title: my Alarm doen't start activity when phone lock is
body: <p>I try to do alarm clock in my aplication, but when phone lock is there activity doest't start as in standart alarm clock. What I can do for decide this problem?</p>
  
  <pre><code>    Calendar cal = Calendar.getInstance();
      cal.add(Calendar.SECOND, 5);
  
      Intent intent = new Intent(this, AlarmReceiverActivity.class);
      PendingIntent pendingIntent = PendingIntent.getActivity(this,
          12345, intent, PendingIntent.FLAG_CANCEL_CURRENT);
      AlarmManager am = 
          (AlarmManager)getSystemService(Activity.ALARM_SERVICE);
      am.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(),
              pendingIntent);
  </code></pre>