Android Question Android API 33 - services/receiver vs http

[Cainsoft]

Hi,
I had a problem for which there was no solution:

StartReceiverAt OkHttpUtils2 during phone sleep

Hi, I have a scheduled task that downloads a web page (OkHttpUtils2) every morning. When the phone is "not asleep" it can download it, otherwise it gets an error message: java.net.UnknownHostException: Unable to resolve host. StartReceiverAt(Reminder_receiver, nextTime, False) Public Sub...

www.b4x.com

Somehow I managed to get a service to run in the "foreground" under Android 13 (API 33). What's interesting is that this service doesn't stop, even if I stop the application and the "start at boot" works. Of course it has the message that the running service is in the background, but the user can turn it off, so it is not confusing.
And with the timed receiver I can call this service and the http request works in the background.

Maybe I misunderstood something, but I took it to mean that foreground services can't really be used anymore, because they don't run in the "fixed" foreground anymore.

Receivers and Services in 2023+

In the early days of Android services were simple to use and powerful. They allowed doing all kinds of things in the backgrounds with very few restrictions. That's not the case with newer versions of Android. With a few exceptions (that aren't 100% reliable), the only use case for services is to...

www.b4x.com

This is the code for my service:

[CODE lang="b4x" title="MainService"]#Region Service Attributes
#StartAtBoot: True

#End Region

Sub Process_Globals
'These global variables will be declared once when the application starts.
'These variables can be accessed from all modules.
End Sub

Sub Service_Create

Dim notification As Notification

Log("=== Service Create")

notification.Initialize
notification.Initialize2(notification.IMPORTANCE_MIN)
notification.Icon = "icon"
notification.Light = False
notification.Vibrate = False
notification.Sound = False
'notification.OnGoingEvent = True
'notification.AutoCancel = False

notification.SetInfo(Application.LabelName, "Service running", Main)

Service.AutomaticForegroundMode = Service.AUTOMATIC_FOREGROUND_ALWAYS
Service.AutomaticForegroundNotification = notification

End Sub

Sub Service_Start (StartingIntent As Intent)
Log("=== Service Start")

'Service.StopAutomaticForeground 'Call this when the background task completes (if there is one)
End Sub

Sub Service_Destroy
Log("=== Service Destroy")
End Sub

Sub getData

Log("=== Service getData")

Private getGustoData As getHttpDataGusto

getGustoData.Initialize
getGustoData.startFromService = True
getGustoData.process

End Sub
[/CODE]


I'm testing it now, but is it possible to use API 33 to use service ?

 

[OliverA]

I'm testing it now, but is it possible to use API 33 to use service ?

As of API 31, your app can only start a foreground service if the app is in the foreground itself. There are exceptions to the rule and they are listed here:

Foreground services overview | Background work | Android Developers

High-level summary of topics related to Android foreground services.

developer.android.com

Note that receiving the ACTION_BOOT_COMPLETED, ACTION_LOCKED_BOOT_COMPLETED intent actions (related to start on boot) allows an app to start the foreground service even though the app is not in the foreground.

API 33 introduces an additional POST_NOTIFICATION manifest entry if you want your app to have the ability to SHOW the notifications. It does not keep the app from starting the foreground service in itself. For usage, see https://www.b4x.com/android/forum/threads/nb6-notifications-builder.91819/