CODEWITHSUNDEEP
androidalarmmanager
cambunctious
cambunctious

Reputation: 9582

AlarmManager setExact in Android 5.1

From Optimizing for Doze and App Standby:

Doze is particularly likely to affect activities that AlarmManager alarms and timers manage, because alarms in Android 5.1 (API level 22) or lower do not fire when the system is in Doze.

To help with scheduling alarms, Android 6.0 (API level 23) introduces two new AlarmManager methods: setAndAllowWhileIdle() and setExactAndAllowWhileIdle(). With these methods, you can set alarms that will fire even if the device is in Doze.

So what do I do if I need to set an alarm for an exact time, even during Doze, in Android 5.1? Is it not possible?

Here is my code

if (noPreciseTime) {
    alarmManager.set(AlarmManager.RTC_WAKEUP, now + interval, pendingIntent)
} else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
    alarmManager.set(AlarmManager.RTC_WAKEUP, time, pendingIntent)
} else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
    alarmManager.setExact(AlarmManager.RTC_WAKEUP, time, pendingIntent)
} else {
    alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, time, pendingIntent)
}

Upvotes: 2

Views: 1372

Answers (2)

Nanang Fitrianto
Nanang Fitrianto

Reputation: 688

In my experiment, AlarmManagerCompat + setAlarmClock is stable to wake up in doze mode. I use xiaomi device which use MIUI.

AlarmManagerCompat.setAlarmClock(alarmManager, time, showIntent, pendingIntent)

Upvotes: 0

Tim
Tim

Reputation: 43314

So what do I do if I need to set an alarm for an exact time, even during Doze, in Android 5.1?

Devices running 5.1 do not doze, so you need not worry about that. This

alarmManager.setExact(AlarmManager.RTC_WAKEUP, time, pendingIntent)

will work as expected in 5.1. The newer setExactAndAllowWhileIdle was introduced for use on devices running 6.0+. Your code snippet is ok.

alarms in Android 5.1 (API level 22) or lower do not fire when the system is in Doze

This is a bit of a confusing statement. What they mean to say here is alarms set using the 5.1 or lower API's (like setExact) do not fire when a device is in doze.

Upvotes: 5

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