title: How to open the app from the background task in iOS?
body: <p>Is it possible to open an app from a background task in iOS?</p>
  
  <p>I want my app to run in the background, and I want it to reappear for whatever reason without user input. Is this possible?</p>
  
  <p>In Android you can have a service that runs in the background, and at any time you can start an Activity, which starts the app for that activity.</p>
  
  <p>I know this does not make for a good user experience. I still want to know whether it can be done.</p>