Android Question From Service Call some SUB in B4XPage

[petr4ppc]

Dear friends,

please, how can I call some SUB which is in B4Xpage from service?

I want to do in service something like this:

CallSub(B4XPage1, "Showlabel")

Best regards
p4ppc

 

[Erel]

What are you using a service for? The question is important to be able to answer your question.

 

[petr4ppc]

Dear friends, Mr. Erel,

I have old app, I have services there and I combine now this old app with B4Xpage. I have for example :
- service for detecting (receiving) sms
- service where I am using httputils

and I am finding way how can I call from this services some SUB in some B4Xpage. It is for me very useful, because when
I am trying to detect (in B4Xpage) some task in service which take only few milisecond then I am trying to do that with
timer, where I am reading some variable declared in service , but it is not good solution, because everytime it is not
possible to detect some short task because of timer...

Best regards
p4ppc

 

[LucaMs]

I think Erel wanted to suggest that you move the code from the services to the B4XPages (*). If I was wrong... I suggest it to you

However, you can call a routine (sub) of a B4XPage using CallSub (or CallSubDelayed) in a simple way, as you wrote yourself, as long as you can access the page (ie that object); for example if it is declared as Public in the B4XMainPage:

CallSub(B4XMainPage.B4XPage1, "Showlabel")

(*) P.S. That way you can create B4I or B4J versions of your project easily.

 

[Alessandro71]

I actually call the sub directly like this example from Starter Service GPS handling

If (B4XPages.IsInitialized) Then
    B4XPages.MainPage.Location_Changed(Location1)
End If

 

[LucaMs]

I actually call the sub directly like this example from Starter Service GPS handling

If (B4XPages.IsInitialized) Then
    B4XPages.MainPage.Location_Changed(Location1)
End If

In fact I wrote a BIG nonsense , just thinking about the problem the OP had found in using CallSub.

 

[LucaMs]

In fact I wrote a BIG nonsense , just thinking about the problem the OP had found in using CallSub.

Sarebbe il caso di allegare Fede col suo "Che figura di..."

Va beh, capita.

(Sorry, In English it wouldn't make sense)

 

[Erel]

- service for detecting (receiving) sms

Is it a foreground service? If not then it will be killed after the app moves to the background.

B4XPages are not paused as long as the process is running. Unless you really need to do something in the background then you should move the code to one of the pages classes.

 

[petr4ppc]

Dear friends, thank you very much,

Mr.Erel:
I have SMS service as

Service.AutomaticForegroundMode = Service.AUTOMATIC_FOREGROUND_NEVER

and LucaMs, Alessandro71​

thank you very much for your help,
Best regards
p4ppc

 

[Erel]

Are you calling StartForeground? If not then the service is meaningless and should be removed.