title: CountDownTimer vs AlarmManager
body: <p>Are there any major differences between <strong>CountDownTimer</strong> and <strong>AlarmManager</strong>? I don't mean syntax or how to use it but wondering if there are such tasks when you certainly can say that I should use one of them, not another?<br>
  Simple example, I have to launch some action once a minute. What should I use? CountDownTimer or AlarmManager? How it depends?</p>