WorkManager not working periodically in Android

Question

I was creating an android notification app which gives notification every 15 minutes after the alarm has been set.

it calls first time, and shows notification but workmanager not calling every 15 minutes.

 val myWorkRequest = PeriodicWorkRequestBuilder<ReminderWorker>(15, TimeUnit.MINUTES).build()

        WorkManager.getInstance(applicationContext)
            .enqueueUniquePeriodicWork("work", ExistingPeriodicWorkPolicy.REPLACE, myWorkRequest)

Longford

Use AlarmManager instead of WorkManager. – Oshaughnessy

but it's not running background. are you sure alarm manager is needed? I already tried with it but it didn't work. I just want to show notification every 15 minutes , data from database. – Longford

I used alarm manager + broadcastreceiver , - android 11 – Longford

Clone and run this repo you'll get it- github.com/alamincmt/android (SimpleAlarmClock-Demo Project) – Oshaughnessy

@Oshaughnessy thanks. I will try, but still in doubt. because android 11 has any restrictions to make it work? – Longford

you need to add initialDelay to the build .setInitialDelay(15, TimeUnit.MINUTE) something like this – Baerl

is there any kotlin version – Longford

follow this https://mcmap.net/q/584660/-workmanager-not-working-periodically-in-android – Hamster

Answer 1

After many days i found a solutions for periodic work manager Use time intervals of at least 1 hour. In document mentions minimum 15 minutes but it is not working don't why not mention in documents when i set 1 hours then it working.

  fun scheduleNotificationRepeated() {
    val constraints: Constraints = Constraints.Builder().apply {
        setRequiredNetworkType(NetworkType.CONNECTED)
        setRequiresBatteryNotLow(true)
    }.build()
    val request: PeriodicWorkRequest = PeriodicWorkRequest.Builder(
        NotifyWork::class.java, 1, TimeUnit.HOURS, 1, TimeUnit.HOURS)
        .setConstraints(constraints)
        .setInitialDelay(2, TimeUnit.HOURS)
        .setBackoffCriteria(BackoffPolicy.LINEAR, 1, TimeUnit.HOURS)
        .build()
    val instanceWorkManager = WorkManager.getInstance(this)
        instanceWorkManager.enqueueUniquePeriodicWork(
        "TAG_WORK_NAME",
        ExistingPeriodicWorkPolicy.KEEP,
        request
    )
}

Hamster

Not working for me, using 8 hours delay with 30 minutes flex. Tested on Android 10 and 12 – Electromechanical

Answer 2

Another way would be to use one time request to make this work. you can have one time request to be scheduled for once and when that request is executed and its doWork() is called you can schedule another one for next 15 minutes and then so on like a recursion. thats pretty straight forward.

Jerrylee

Answer 3

you need to add initialDelay to the builder

 val myWorkRequest: PeriodicWorkRequest = PeriodicWorkRequest.Builder(
        MySimpleWorker::class.java, 3, TimeUnit.HOURS, 1, TimeUnit.HOURS)
        .setConstraints(constraints)
        .setInitialDelay(2, TimeUnit.HOURS)
        .setBackoffCriteria(BackoffPolicy.LINEAR, 1, TimeUnit.HOURS)
        .build()

Baerl