Android Question CallSub when Activity Paused

[imgsimonebiliato]

Hello,
I use a service to do a request http to a web server.
I need to execute this request, even when the user exit from the app.

How can I do?

 

[imgsimonebiliato]

I know the usage of CallSubDelayed, but I don't want that the request is sending to waiting queue.

 

[thedesolatesoul]

The request will be executing once started even if the user exits the app.

 

[imgsimonebiliato]

Hello @thedesolatesoul,
from the log, I've got:

** Service (screalist) Create **
** Service (screalist) Start **
1
2
** Activity (main) Pause, UserClosed = false **
3
4
5
sending message to waiting queue (CallSubDelayed - CreateLists)

But the sub "CreateLists" it isn't execute on the background

 

[thedesolatesoul]

Is the Service calling the callsub in the activity?

 

[imgsimonebiliato]

Yes..
Here it is the code of the service module:

#Region  Service Attributes
    #StartAtBoot: False
#End Region

Sub Process_Globals
Dim Time As Timer
Dim Counter As Int
Counter = 0
End Sub

Sub Service_Create
Log("--Service Started--")
Time.Initialize ( "Time", 1000 )
Time.Enabled = True
End Sub

Sub Time_Tick
Counter = Counter + 1
Log(Counter)

If Counter = 5 Then
    CallSubDelayed(Main, "CreateLists")
    Counter = 0
End If
End Sub

Sub Service_Start (StartingIntent As Intent)

End Sub

Sub Service_Destroy
Time.Enabled = False
End Sub

 

[thedesolatesoul]

So what you are saying is that you want to display the activity, even after the user exits and is in the middle of playing a game?

 

[imgsimonebiliato]

It isn't necessary to display the activity, but only execute the sub

 

[thedesolatesoul]

It isn't necessary to display the activity, but only execute the sub

Yes. The activity sub does not exist without the activity.

If the sub is written in a way that it can be executed without needing the activity then it should be in a code module or a service.

 

[imgsimonebiliato]

And if it is written in a way that it can't be executed without needing the activity?

 

[thedesolatesoul]

Then you actually need to display the activity just to execute the sub.

 

[imgsimonebiliato]

Ok I understand.
And, if I want that this service continues his life cycle, even when the user kills it?

 

[thedesolatesoul]

The service will stay alive until it has things to do.
If you really want to force it to never die, you need to make it either a foreground service (no killing) or a sticky service (gets killed but re-spawns).

 

[imgsimonebiliato]

Please, can you post some example code for a foreground service?

 

[DonManfred]

Please, can you post some example code for a foreground service?

https://www.b4x.com/android/forum/t...-long-running-background-tasks.27065/#content

 

[imgsimonebiliato]

Is it possibile, to start the service, when the user power on the device?

 

[thedesolatesoul]

Please, can you post some example code for a foreground service?

Foreground service is similar to a normal service except you need to create a notification.
In the ServiceStart you can add Service.StartForeground(0, notification)

 

[thedesolatesoul]

Is it possibile, to start the service, when the user power on the device?

When the device is powering down, its too late to start anything.

 

[qsrtech]

Is it possibile, to start the service, when the user power on the device?

I think setting startatboot:true in the service's settings at the very top of the code module should do what you want.

 

[thedesolatesoul]

Oops I read that as power 'off' the device