title: Android Notification: How to show sticky/updating alarm
body: <p>I have an app where I'd like to show a notification at the top of the screen, with the time updating, and have it stay there until the user dismisses it or presses an action.</p>
  
  <p>My question is, how do I have the notification stay at the top of the screen in that manner and is it updatable as well?</p>
  
  <p><img src="https://i.stack.imgur.com/2qCjI.jpg" alt="Example"></p>