Android Question Change activity Problem

[GaNdAlF89]

In my app I have three activities: Login, Selection and Produce. In Produce activity I use the barcode scanner with ABZxing library. In this case, if barcode isn't read in some seconds (readInterval), I return to Produce activity with this code:

Sub Activity_Pause (UserClosed As Boolean)

If Global.kiosk = True AND Global.currentActivity = "Produce" Then
     
        If Global.flagBarcode = False Then
            StartServiceAt(Kiosk_Service,DateTime.Now,False)
        Else
            StartServiceAt(Kiosk_Service,DateTime.Now + readInterval,False)
        End If
     
End If

End Sub

Kiosk_Service module restart the Produce activity if it is paused:

Sub Service_Start (StartingIntent As Intent)
 
    Service.StartForeground(1, Notification)
 
    KioskTimer.Enabled = True
 
End Sub

Sub Service_Destroy
 
    KioskTimer.Enabled = False
 
    Service.StopForeground(1)
 
End Sub

Sub KioskTimer_Tick
 
    Global.flagBarcode = False
  
    If IsPaused(Global.currentActivity) Then
        StartActivity(Global.currentActivity)
    End If
 
    KioskTimer.Enabled = False
  
End Sub

I have a problem only if the barcode scanner is closed by Kiosk_Service, when I close Produce activity to return to Selection activity, the barcode scanner is resumed and Kiosk_Service doesn't work.
It is as if Android schedule the barcode scanner instead of my app when i want to return to Selection activity to Produce activity. What is the problem?

 

[Erel]

You are not closing the barcode scanner activity. You are just starting another activity in front of it. So when that activity closes the barcode is resumed.

You can explicitly start the Selection activity when the produce activity is closed.

 

[GaNdAlF89]

You can explicitly start the Selection activity when the produce activity is closed.

How can I do this? Can you give me an example to close Produce activity and start Selection acitvity?
Another thing, I tried also to kill barcode scanner before to start selection activity, with this code:
http://www.b4x.com/android/forum/th...ss-killbackgroundprocesses-not-working.23470/
but it doesn't work, neither with killProcess and killBackgroundProcesses. Why?

 

[Erel]

I've never worked with the OS library. However killing other processes can be problematic.

You can catch the back key and start the first activity and then call Activity.Finish.

 

[GaNdAlF89]

You can catch the back key and start the first activity and then call Activity.Finish.

Thanks, I have already tried to do this with this code, but it doesn't work.

Global.currentActivity = "Selection" 
StartActivity(Global.currentActivity) 'start Selection activity
Activity.Finish 'close Production activity

I've also tried with this

Dim tIn As Intent
tIn.Initialize(tIn.ACTION_MAIN,"")
tIn.SetComponent("<packagename>/.selection")
StartActivity(tIn)
Activity.Finish

but the result is the same. Why?

 

[Erel]

The first code should start the selection activity. Note that you just write: StartActivity(Selection).

Are you sure that the code is executed?

 

[GaNdAlF89]

The first code should start the selection activity. Note that you just write: StartActivity(Selection).

Are you sure that the code is executed?

It should not be so? I don't understand sorry

 

[Erel]

You have posted a small code snippet. Are you sure that you put it in the correct place?

 

[GaNdAlF89]

I put it in the click event of a button, that I use only to change activity (close Produce activity and start Selection acitvity).

Sub ButtonExit_Click
 
Dim res As Int
res = Msgbox2("<message>","<title>","YES","","NO",Null)

If res = DialogResponse.POSITIVE Then
   
    Global.currentActivity = "Selection"
    StartActivity(Global.currentActivity) 'start Selection activity
    Activity.Finish

End If

End Sub

 

[Erel]

Your code looks correct. Try to disable the kiosk service and see whether it interferes with the resume of the original activity.