Foreground Services w WorkManager

gradle.build

implementation "androidx.work:work-runtime:2.7.1"
implementation "androidx.work:work-runtime-ktx:2.7.1"

MainActivity.kt

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val constraints = Constraints.Builder()
            .setRequiredNetworkType(NetworkType.CONNECTED)
            .setRequiresStorageNotLow(true)
            .build()

        val workRequest = OneTimeWorkRequestBuilder<WorkerSample>()
            .setConstraints(constraints)
            .setExpedited(OutOfQuotaPolicy.RUN_AS_NON_EXPEDITED_WORK_REQUEST)
            .build()

        WorkManager
            .getInstance(this@MainActivity)
            .enqueue(workRequest)

        WorkManager.getInstance(this@MainActivity).getWorkInfoByIdLiveData(workRequest.id)
            .observe(this@MainActivity) { workInfo ->
                Log.d("test", "state ${workInfo?.state}")
            }
    }

}

WorkerSample.kt

class WorkerSample(val context: Context, workerParams: WorkerParameters) : CoroutineWorker(context, workerParams) {

    companion object {
        private const val NOTIFICATION_CHANNEL_ID = "10"
        private const val NOTIFICATION_CHANNEL_NAME = "WorkService"
    }

    override suspend fun doWork(): Result {
        Thread.sleep(20000) //Replace with your long process
        return Result.success()
    }

    override suspend fun getForegroundInfo(): ForegroundInfo {
        val notificationManager =
            context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

        val channel = NotificationChannel(
            NOTIFICATION_CHANNEL_ID,
            NOTIFICATION_CHANNEL_NAME,
            NotificationManager.IMPORTANCE_HIGH
        )

        notificationManager.createNotificationChannel(channel)

        val notification = NotificationCompat.Builder(context, NOTIFICATION_CHANNEL_ID)
            .setContentIntent(PendingIntent.getActivity(context, 0, Intent(context, MainActivity::class.java), FLAG_IMMUTABLE))
            .setSmallIcon(R.drawable.ic_launcher_foreground)
            .setOngoing(true)
            .setAutoCancel(true)
            .setOnlyAlertOnce(true)
            .setPriority(NotificationCompat.PRIORITY_MIN)
            .setContentTitle(context.getString(R.string.notif_title))
            .setLocalOnly(true)
            .setVisibility(NotificationCompat.VISIBILITY_SECRET)
            .setContentText(context.getString(R.string.notif_content))
            .build()

        return ForegroundInfo(6855, notification)
    }

}