Android Question HttpUtils2Service starts at a random time depending on devices

vecino · Aug 27, 2023

Hi, after a long thread and a lot of testing, we came to the conclusion that when running this:

B4X:

StartReceiver(HttpUtils2Service)

Depending on the device it may start instantly, or I may start in a few seconds, or it may start in minutes, or it may never start.

This is a problem because in the meantime nothing that uses "http" works.
Only when "HttpUtils2Service" is already started then any http query works fine.

Tests have been done on many devices, and the problem is random, on most of them it works fine. But there are others where it does not start "HttpUtils2Service" right away, as I explained before.

If you try to do, for example, something like "HttpJob.DownLoad" or "HttpJob.j.GetString", etc. you get the message:

sending message to waiting queue of uninitialized activity (submitjob)

It is a very misleading message and apparently has nothing to do with the problem.

Attached is a test project, surely on most devices it will work fine.
The problem is:
How to solve it on devices that take time to start "HttpUtils2Service"?

Here a log of a device:

*** mainpage: B4XPage_Created
TempFolder=
*** mainpage: B4XPage_Appear
** Activity (main) Resume **
*** Receiver (httputils2service) Receive (first time) ***
TempFolder=/data/user/0/b4a.example/cache
0.001 s (Count: 1)

Here a log from another device:

*** mainpage: B4XPage_Created
*** mainpage: B4XPage_Appear
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*** Receiver (httputils2service) Receive (first time) ***
TempFolder=/data/user/0/b4a.example/cache
0.965 s (Count: 427)
{"id":1,"title":"iPhone 9","description":"An apple mobile which is nothing like

Thank you very much.

sirjo66 · Aug 27, 2023

in my Samsung S10e with Android 12:

vecino · Aug 27, 2023

sirjo66 said:
in my Samsung S10e with Android 12:

Yes, that is the norm for devices that do not exhibit that problem.

Erel · Aug 28, 2023

Call this sub at the beginning of your app:

B4X:

Private Sub StartHttpUtils2Service
    #if release
    If HttpUtils2Service.TempFolder = "" Then
        Dim jo As JavaObject
        jo.InitializeNewInstance(Application.PackageName & ".httputils2service", Null)
        jo.RunMethod("onReceive", Array(Null, Null))
    End If
    #end if
End Sub

marcick · Aug 28, 2023

Erel said:
Call this sub at the beginning of your app: ....

In my case it works perfetc ! Is it at the beginning of Activity_Create the best place to put this code ?

Erel · Aug 28, 2023

marcick said:
Is it at the beginning of Activity_Create the best place to put this code ?

(Best to use B4XPages)

In a non-B4XPages project I recommend putting it in Service_Create of the starter service.

marcick · Aug 28, 2023

Yes, I'm working on a future release with B4XPages but it takes time. For now I'll put it in the starter service as you suggest. Thank you ?

Erel · Aug 28, 2023

Important to write that this issue will not be resolved simply by switching to B4XPages. It looks like on some devices the OS doesn't let receivers start right after boot. Assuming that this works properly without side effects, I will implement it directly in OkHttpUtils2.

Alessandro71 · Aug 28, 2023

Erel said:
(Best to use B4XPages)

In a non-B4XPages project I recommend putting it in Service_Create of the starter service.

Is there any drawback in using Service_Create even in B4XPages projects?
I'd prefer a single solution regardless of project type.

vecino · Aug 28, 2023

Erel said:

Call this sub at the beginning of your app:

B4X:

Private Sub StartHttpUtils2Service
    #if release
    If HttpUtils2Service.TempFolder = "" Then
        Dim jo As JavaObject
        jo.InitializeNewInstance(Application.PackageName & ".httputils2service", Null)
        jo.RunMethod("onReceive", Array(Null, Null))
    End If
    #end if
End Sub

Hi, I have done several tests and so far they have all worked well.
It starts "httputils2service" immediately, without delay.
I think the problem is solved.
Thank you very much.

Erel · Aug 28, 2023

Alessandro71 said:
Is there any drawback in using Service_Create even in B4XPages projects?

No drawback.

udg · Aug 29, 2023

Call this sub at the beginning of your app:

For a B4xPages project which of the following should be considered the "beginning of the app" ?
- Starter.Service_Create
- Main.Activity_Create (B4A) ** Main.Application_Start B4i) ** Main.AppStart (B4J)
- B4xMainPage.Initialize
- B4xMainPage.B4XPage_Created

And what if the app has one or more Receivers (e.g. for FCM)?

I expect the Main.xxx trio to be the preferred point where to call that code, but receivers/services may change that.

Alessandro71 · Aug 29, 2023

udg said:
For a B4xPages project which of the following should be considered the "beginning of the app" ?
- Starter.Service_Create
- Main.Activity_Create (B4A) ** Main.Application_Start B4i) ** Main.AppStart (B4J)
- B4xMainPage.Initialize
- B4xMainPage.B4XPage_Created

And what if the app has one or more Receivers (e.g. for FCM)?

I expect the Main.xxx trio to be the preferred point where to call that code, but receivers/services may change that.

I would say that starter service exists only for Android projects, so for a true B4X projects, it should be ruled out.
The MainPage option is available for all 3 platforms, so generic code should go there.
The Main.xxx trio is best suited for platform specific code.
Just my 2 cents...

vecino · Aug 29, 2023

I have put it here, and so far it is working well.

B4X:

Private Sub B4XPage_Created (Root1 As B4XView)
    Root = Root1
    Root.LoadLayout("MainPage")   

    StartHttpUtils2Service           

End Sub

jahswant · Aug 29, 2023

This issue occurs only in b4a. So it’s logical to deal with this in b4a starter or main module.

vecino · Aug 29, 2023

I don't quite understand what you are saying.
In the program with "Activity" I am using it this way and it also works fine:

B4X:

Sub Activity_Create(FirstTime As Boolean)

    StartHttpUtils2Service

    Activity.LoadLayout("frmMain")

jahswant · Aug 29, 2023

That’s what I use too !

nedium · Oct 24, 2023

HI
I have used this code but when starting the application in some cases it gives the error, I was able to do it in the starter service but still, I don't know if I have skipped a step or if the phone model has something to do with it, it is a Samsung A72

Erel · Oct 24, 2023

Please start a new thread and post the error message.

Android Question HttpUtils2Service starts at a random time depending on devices

vecino

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sirjo66

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