Code for the Medium article: "Customizing WorkManager"

IoschedFirebaseMessagingService.kt

/* Copyright 2019 Google LLC.	
   SPDX-License-Identifier: Apache-2.0 */
private fun scheduleFetchEventData() {
    val constraints = Constraints.Builder()
        .setRequiredNetworkType(NetworkType.CONNECTED)
        .build()

    val conferenceDataWorker = OneTimeWorkRequestBuilder<ConferenceDataWorker>()
        .setInitialDelay(MINIMUM_LATENCY, TimeUnit.SECONDS)
        .setConstraints(constraints)
        .build()

    val operation = WorkManager.getInstance(this)
        .enqueueUniqueWork(
            uniqueConferenceDataWorker,
            ExistingWorkPolicy.KEEP,
            conferenceDataWorker)
        .result

    operation.addListener(
        { Timber.i("ConferenceDataWorker enqueued..") },
        { it.run() }
    )
}