Android Question Callsub with waiting

[Scantech]

I am interested if there is anything that deals with Callsub and wait for the sub is ended. Is there any examples of this?

I need to call a sub in Main from Service. If Main is paused it will still call it and trigger the sub and wait for the sub to end.

CallSub(Main, "Testing")
'Need to wait here until the Testing Sub is Ended

 

[DonManfred]

Probably it is better to use CallSubDelayed as it will start the activity if not running.

For the rest:
https://www.b4x.com/android/forum/threads/b4x-resumable-subs-sleep-wait-for.78601/

https://www.b4x.com/android/forum/threads/b4x-resumable-subs-that-return-values-resumablesub.82670/

 

[Erel]

I assume that Main.Testing is a resumable sub. Otherwise you don't need to do anything special.

Sub Testing As ResumableSub
 ...

'different module
Dim rs As ResumableSub = CallSub(Main, "Testing")
if rs.IsInitialized Then
 Wait For (rs) Complete (Result As Object)
 'after
Else
 Log("Activity was paused")
End If

 

[Scantech]

I assume that Main.Testing is a resumable sub. Otherwise you don't need to do anything special.

Sub Testing As ResumableSub
 ...

'different module
Dim rs As ResumableSub = CallSub(Main, "Testing")
if rs.IsInitialized Then
 Wait For (rs) Complete (Result As Object)
 'after
Else
 Log("Activity was paused")
End If

I thought Anything after CallSub will have to wait for the sub to be completed? But when you use CallSubDelayed it will go to next code with out waiting?

Can this be used with CallSubDelayed. I want to unpause the Main and make the call and wait for completion.

 

[Scantech]

Sub Service_Create
    CallSub(Main, "Testing")
    Log("After CallSub in Service")
    
End Sub

Sub Testing
    For x = 0 To 20000
        Log("TESTING IN MAIN " & x)
    Next
End Sub

This works but i need to use Callsubdelayed to unpause the activity

 

[Scantech]

Probably it is better to use CallSubDelayed as it will start the activity if not running.

For the rest:
https://www.b4x.com/android/forum/threads/b4x-resumable-subs-sleep-wait-for.78601/

https://www.b4x.com/android/forum/threads/b4x-resumable-subs-that-return-values-resumablesub.82670/

Yes, i need to wait for the sub being called and be completed before it goes to next line after CallsubDelayed.

 

[Scantech]

This is the difference with Erels Example.

'Erels Example above

Sub Service_Create
    'different module
    Dim rs As ResumableSub = CallSub(Main, "Testing")
    If rs.IsInitialized Then
        Wait For (rs) Complete (Result As Object)
        Log("AFTER WAITING")
    Else
        Log("Activity was paused")
    End If
End Sub

Sub Testing As ResumableSub
    Log("TESTING")
End Sub

'Result

*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
*** Service (doing) Create ***
TESTING
** Service (doing) Start **
AFTER WAITING
** Activity (main) Pause, UserClosed = true **
** Service (starter) Destroy (ignored)**
** Service (doing) Destroy **

'This Example

Sub Service_Create
    'different module
    CallSub(Main, "Testing")
    Log("AFTER WAITING")

End Sub

Sub Testing As ResumableSub
    Log("TESTING")
End Sub

'Result

*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
*** Service (doing) Create ***
TESTING
AFTER WAITING
** Service (doing) Start **
** Activity (main) Pause, UserClosed = true **
** Service (starter) Destroy (ignored)**
** Service (doing) Destroy **

Notice the difference with **Service(doing)Start**

 

[Erel]

This thread is very unclear. You should start a new thread and better explain what you are trying to do.