What is IntentService ?

Intent Service

IntentService is an extension of the Service component class that handles asynchronous requests (expressed as Intents) on demand. Clients send requests through Context.startService(Intent) calls; the service is started as needed, handles each Intent in turn using a worker thread, and stops itself when it runs out of work. 

class MyIntentService : IntentService("MyIntentService") {

override fun onHandleIntent(intent: Intent?) {

// Perform some background task here

}

}