How Does Doze Mode Affect Background/Foreground Services, With/Without Partial/Full Wakelocks

How does doze mode affect background/foreground services, with/without partial/full wakelocks?

Processes which have a current running foreground service are supposed to be unaffected by Doze. Bound/unbound, started/not-started, and wakelocks do not affect this whitelisting process.

However, there is an issue on Android M devices where foreground services are not properly whitelisted when the foreground service is the in the same process as the top activity and improperly dozed.

The fix is available on AOSP and will be included in builds of Android N. It would be up to OEMs to integrate that patch into any Android M builds they produce.

Keep ForegroundService alive When in Doze Mode

As per this, the following is a restriction which applies in doze mode :

The system ignores wake locks.

You still need to hold a wakelock "to indicate that your application needs to have the device stay on".

So, your wake lock will not affect doze mode (and that is by design). However, if you are using a foreground service, doze mode does not seem to affect foreground services see this SO post.

If you are using something else, you can see this guide here to optimize your app for doze mode.

Doze mode - do foreground services continue to run?

Foreground services are not killed in doze mode and it's a great workaround to override the doze mode.
Killing the foreground service is highly depending on Mobile OS.
Like Huawei, it kills the foreground services after a slack of time and you will not be able to determine the period.
Some other phones kill the oldest foreground service if it detects unexpected battery consumption.
last year, I spent around 6 months observing phones behavior in killing the foreground services when doze mode is activated or not.
and I tried more than one solution to override the doze mode in detecting location every 10 seconds and the best one is the foreground service.
So you will face unexpected behavior on some phones but it is the best solution for doze and standby mode.
You can see this article
and you can also look at this tutorial

Doze mode and foreground service

In this post's comments on Sep 17 Dianne Hackborn writes:

Apps that have been running foreground services (with the associated notification) are not restricted by doze.

So yes, your findings seem to be the intended behavior.

Will foreground service work in not wake-up time of doze mode

I have an experience of my foreground service (with a notification that keeps updating every second) getting paused because of doze mode. I was running a timer function in my foreground service. When I came back after a long time, the timer wasn't really running because the device went doze mode. I had to request a WakeLock to keep my service alive.

Starting foreground service in doze mode

you should use GcmTaskService. You can schedule some interval for your operations and it would work fine even in doze mode, check more information by link

---

Related Topics