[Android] WorkManager snippets

ServiceManager.kt

class ServiceManager(private val context: Context) {

    private val globalsConstraints =
        Constraints.Builder().setRequiredNetworkType(NetworkType.CONNECTED).build()

    // Add new jobs here
    private val allServicesAvailables =
        listOf(
            Service(IncidentsSynchronizationWorker::class.java, IncidentsSynchronizationWorker.TAG),
            Service(AttachmentsCleaningWorker::class.java, AttachmentsCleaningWorker.TAG)
        )

    fun restartServicesStopped() {
        val servicesNotRunning = checkAllServices()
        restartServices(servicesNotRunning)
    }

    private fun checkAllServices(): MutableList<Service> {

        val instance = WorkManager.getInstance(context)
        val servicesNotRunning = mutableListOf<Service>()

        allServicesAvailables.forEach { service: Service ->
            val statuses = instance.getWorkInfosByTag(service.tag)
            val running = try {
                var running = false
                val workInfoList = statuses.get()
                for (workInfo in workInfoList) {
                    val state = workInfo.state
                    running =
                        (state == WorkInfo.State.RUNNING) or (state == WorkInfo.State.ENQUEUED)
                }
                running
            } catch (e: ExecutionException) {
                e.printStackTrace()
            } catch (e: InterruptedException) {
                e.printStackTrace()
            }
            // Store not running services
            if (!running) {
                servicesNotRunning.add(service)
            }
        }

        return servicesNotRunning
    }

    private fun restartServices(servicesNotRunning: MutableList<Service>) {
        servicesNotRunning.forEach { service: Service ->
            val worker = PeriodicWorkRequest.Builder(
                service.classType,
                15, // TODO: Increase interval to an higher value => make custom config in each Worker :) ?
                TimeUnit.MINUTES
            )
                .addTag(service.tag)
                .setConstraints(globalsConstraints).build()

            // Start
            WorkManager.getInstance(context).enqueue(worker)
        }
    }

    data class Service(
        val classType: Class<out ListenableWorker>,
        val tag: String
    )

}

workmanager-snippets.md

Android WorkManager Snippets

Start and restart jobs

Use the ServiceManager class to make jobs management easier.

ServiceManager(this).restartServicesStopped()