B4J Question My App Freeze on Raspberry Pi

[ggranata]

Hi,
I've a problem with my app. In this app, I have UDP Socket and every time that receives a packet, refresh the UI: I've a single form and when refresh the data I remove all nodes and load the layout. It works fine for hours until it freezes. In my log, I don't see any error.
Any help is welcome.
Thanks

 

[Erel]

I guess that some resource isn't cleared. Best solution is to work a bit harder and reuse the views instead of creating new views each time.

 

[ggranata]

Thanks for help. I cannot reuse the views because layouts is inside the udp packet. My base form is a table: when receive a packet, I remove some cells. Can I force Java garbage collection? Alternatively, how I can clear all view resources before to load layout?

 

[jahswant]

how I can clear all view resources before to load layout?

Parent.RemoveAllViews

 

[ggranata]

Parent.RemoveAllViews

Thanks for reply but I cannot fine the method.
This is my code:

Private Sub ChangePage(page As Int )
    Dim layout As String
    'Rimuovo tutti i nodi
    MainForm.RootPane.RemoveAllNodes
    
    Select Case page
        Case Constants.PAGE_WAITINGLINK
            layout = "WaitingLink"
        Case Constants.PAGE_PAIRING
            layout = "Pairing"
        Case Constants.PAGE_PAIRED
            layout = "Paired"
        Case Constants.PAGE_DATA
            layout = "BasePanel"
    End Select
    
    m_ActualPage = page
    
    'Carico il nuovo layout
    MainForm.RootPane.LoadLayout(layout)
End Sub

 

[Erel]

Can I force Java garbage collection?

Never helps.

My guess is that it is a leak in the underlying RPi framework. There is no such thing that you can't reuse views. It might require some work but it is possible.