Android Question How to runs service in background forever?

[incendio]

Hi guys,

I runs this example on my phone : Android 9, EMUI 9.1, B4A 9.8

Background location tracking

Simple example of a foreground service that keeps the process running in the background. The current location is shown in the persistent notification. The app starts at boot and theoretically should run all the time. It also schedules itself to run with StartServiceAt. This can help in cases...

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The app is suppose to runs forever but in my case, when phone slept for a few minutes, OS killed it.
I changed the codes at service start to runs again every 3 minutes

Sub Service_Start (StartingIntent As Intent)
    Service.StartForeground(nid, CreateNotification("..."))
    StartServiceAt(Me, DateTime.Now + 3 * DateTime.TicksPerMinute, True) 'in the example it was 30'
    Track
End Sub

but no avail.

I believe it has something to do with power management in EMUI 9.1.
The default power management for all app in EMUI 9.1 are manage automatically.
If I change power management for this example application to manual and allow it to run in background, application runs as expected.

Is there a way to let service runs forever without a need to change power management's setting in the phone?

 

[OliverA]

Please read: https://www.b4x.com/android/forum/threads/continous-background-gps-tracking.110628/post-690743

As to power management see: https://www.b4x.com/android/forum/threads/about-runtime-permission.69703/#post-455436, but also see https://www.b4x.com/android/forum/threads/ignore-battery-optimizations.68825/post-436650. Please note, this still requires user intervention. As per the first link, Android is user becoming more and more user centric and therefore many things are just not doable without user interaction/user approval.

 

[incendio]

Please read: https://www.b4x.com/android/forum/threads/continous-background-gps-tracking.110628/post-690743

As to power management see: https://www.b4x.com/android/forum/threads/about-runtime-permission.69703/#post-455436, but also see https://www.b4x.com/android/forum/threads/ignore-battery-optimizations.68825/post-436650. Please note, this still requires user intervention. As per the first link, Android is user becoming more and more user centric and therefore many things are just not doable without user interaction/user approval.

If I understood correctly, there is no way for developers to runs foreground app forever without users approval to ignore power management for that app.

I did add Ignore Battery Optimization Dialog to user with the codes from

About runtime permission

Just a confirmation if I'm doing correctly: I have declared in "configure paths" the android-23 platform. This because I want to manage a runtime permission in Android 6 and force the user to exclude the App from the battery optimization Sub Activity_Resume If GetAndroidApiLevel>=23 Then...

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but even, user click OK, app in foreground still killed by OS.

So I guest, on my phone, unless users set power management manually on OS, there is no way for app to run forever in foreground.

Thanks anyway.