Which coroutine scope should I use in android.app.Application?

Question

I need to call a suspend function in the on onCreate method of android.app.Application . Which coroutine scope should I use for that and why?

Answer 1

You can either use GlobalScope or create your own scope in the Application class.

GlobalScope is not bound to a lifecycle event, and that's what you'd want to use in the Application class.

Answer 2

By using SupervisorJob() you can cancel the Global scope when the application class gets destroyed

Sample code

val applicationScope = CoroutineScope(SupervisorJob() + Dispatchers.Main)

applicationScope.launch {
 // action done in here
}

override fun onLowMemory() {
    super.onLowMemory()
    applicationScope.cancel()
}

onLowMemory() is similar to onDestroy() fun in application class