B4J Question ABMRadioGroup - Clearing options

[Rob White]

Hi all,
I need to select a clients farm once I have the selected client. So the farms radio group must be dynamic.
Here is a modified copy of the page template ConnectPage sub and the clicked event handler for the client group.
Note that this is all hard coded my code gets this information from a DB.

public Sub ConnectPage()           
    '    connecting the navigation bar
    ABMShared.ConnectNavigationBar(page)

    Dim rbclient As ABMRadioGroup
    rbclient.Initialize(page,"rbClient","mytheme")
    rbclient.AddRadioButton("Client1",True)
    rbclient.AddRadioButton("Client2",True)
    rbclient.AddRadioButton("Client3",True)
    Dim Clab As ABMLabel
    Clab.Initialize(page,"lab1","Select client",ABM.SIZE_H5,False,"mytheme")
    
    page.Cell(1,1).AddComponent(Clab)
    page.Cell(2,1).AddComponent(rbclient)
    ' refresh the page
    page.Refresh
    
    ' Tell the browser we finished loading
    page.FinishedLoading
    ' restoring the navigation bar position
    page.RestoreNavigationBarPosition   

End Sub

Sub rbclient_clicked(target As String)
    'This is from the demo BUT has wrong number of arguments >> Dim rb As ABMRadioGroup = page.Component(2,1,"rbgroup")
    Dim rb As ABMRadioGroup = page.Component("rbClient")
    Dim rbFarms As ABMRadioGroup
    rbFarms.Initialize(page,"rbFarms","mytheme")
    Log($"Inside rbclient_clicked getActive = ${rb.GetActive}"$)
    Select rb.GetActive
        Case 0
            rbFarms.AddRadioButton("Farm 1",True)
            rbFarms.AddRadioButton("Farm 2",True)
        Case 1
            rbFarms.AddRadioButton("Farm 3",True)
            
        Case 2
            rbFarms.AddRadioButton("Farm 4",True)
            rbFarms.AddRadioButton("Farm 5",True)
            rbFarms.AddRadioButton("Farm 6",True)
            
    End Select
    page.Cell(2,2).AddComponent(rbFarms)
    page.Refresh
End Sub

I can supply the complete template zip if requested.

My questions are about how I make the dynamic Farms rb group. I assumed that because the rbFarms radiogroup is declared in the click handler a new group would be formed but when run only the first formed group is displayed.
There is no clear method so how would people do this?

 

[alwaysbusy]

Easiest is probably first removing the old radiogroup and adding it again with the new client specific values using the Page.Cell(2,2).RemoveAllComponents method

 

[Rob White]

Thanks Alwaysbusy.

That worked a treat!

 

[Harris]

Easiest is probably first removing the old radiogroup and adding it again with the new client specific values using the Page.Cell(2,2).RemoveAllComponents method

That is the way I learned to do it. Remove the default component in the row / cell and add the new based on your update.
A simple refresh of row / cell doesn't work, as expected since - I think - the cache "seems to see it" as the same. Removing the component forces a new look at the content.
When one learns how to deal with these peculiar issues, it gets locked into your dev knowledge working with ABM....