SampleService.kt

class SampleService : Service() {
  companion object {
    private val LAUNCHER = ForegroundServiceLauncher(SampleService::class.java)

    @JvmStatic
    fun start(context: Context) = LAUNCHER.startService(context)

    @JvmStatic
    fun stop(context: Context) = LAUNCHER.stopService(context)
  }

  override fun onCreate() {
    super.onCreate()
    startForeground(ID, notification)
    //...

    LAUNCHER.onServiceCreated(this)
  }

  override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
    //...
  }
}