title: FileObserver listening on background, Android O
body: <p>I have <code>FileObserver</code> in my application, now it runs on the background and if new file registered - instantiate uploading of it to some server in foreground service. </p>
  
  <p>In Android O we should use FirebaseJob Dispatcher to do some job in background, but how could we apply it for <code>FileObserver</code>? Is there any way to analyze data in background? Or maybe it's fail to use <code>FileObserver</code> since now? </p>