Android Question [Solved] How I can perform this operation (wait for the sub terminate and start other sub)

[asales]

I have an app that upload several records to a server.
After it upload the data, it make some checks and I can get new data from the server.

Now I made this way (an example of my logical):

Sub StartProcess
   SendData
End Sub

Sub SendData
   For i = 0 to data.size
       SendPut (...)
   Next
  
   DownloadData  ' <-- When the for terminate call the sub DownloadData
End Sub

Sub DownloadData
   SendRequest (...)   
End Sub

How I can make this way?:

Sub StartProcess
   SendData
'   when the sub "SendData" terminate...
   DownloadData    ' <-- starts the sub "DownloadData"
End Sub

I tried, but the sub "DownloadData" starts before the sub "SendData" has completed.

Thanks in advance for any help.

 

[DonManfred]

Learn how to work with Resumeable subs
https://www.b4x.com/android/forum/threads/b4x-resumable-subs-that-return-values-resumablesub.82670/

 

[asales]

Learn how to work with Resumeable subs
https://www.b4x.com/android/forum/threads/b4x-resumable-subs-that-return-values-resumablesub.82670/

Thanks! This is the code changed:

Sub StartProcess
    Wait For(SendData) Complete (Result As Object)

    Wait For(DownloadData) Complete (Result As Object)
End Sub

Sub SendData As ResumableSub
    For i = 0 to data.size
        SendPut (...)
    Next

    Return Null
End Sub

Sub DownloadData As ResumableSub
    SendRequest (...)   

    Return Null
End Sub