title: Android Oreo Notifications - check if specific channel enabled
body: <p>Im using this snippet to check if notifications enabled:</p>
  
  <pre><code>NotificationManagerCompat.from(getContext()).areNotificationsEnabled()
  </code></pre>
  
  <p><strong>however</strong>, if user disable only the channel, i cannot know about it.</p>
  
  <p>Any idea?
  <a href="https://i.stack.imgur.com/Fx6vz.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Fx6vz.png" alt="enter image description here"></a></p>