title: How can I make my app send out notifications when it's loaded but not running in the foreground?
body: <p>I have an app that I use sometimes. I must have left it there in the background before I slept.  When I woke up I saw this notification on my screen. </p>
  
  <p><a href="https://i.stack.imgur.com/MIIVh.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/MIIVh.jpg" alt="enter image description here"></a></p>
  
  <p>Does anyone have any suggestions on how I can make a notification like this appear with my <strong>XF</strong> application? </p>
  
  <p>Also, do these notifications appear on <strong>Android</strong> also? I've never seen them on my <strong>Android</strong> phone but that could be because I use it much less.</p>