Android Question B4A Prefdialogs forms : disable item field

[mike1967]

helllo whit this:

prefdialog.Initialize(B4XPages.GetNativeParent(Me),Main.attrezzatura,800,900)
        prefdialog.LoadFromJson(File.ReadString(File.DirAssets, "impianti.json"))

How i can disable programmatically an item in the form with key "datacoll" ?
Can help me ?
Thanks in advance

 

[Erel]

Which type of item?

 

[mike1967]

Which type of item?

for now date but also if possible some items

 

[Erel]

The code depends on the specific item layout.

Example:

Sub Button2_Click
    p.Title = "dc342"
    p.Theme = p.THEME_DARK
    Dim sf As Object = p.ShowDialog(Data(1), "OK", "CANCEL")
    SetTwoLabelsItemState(p, "Birthday", False)
    Wait For (sf) Complete (Result As Int)
End Sub

Private Sub SetTwoLabelsItemState (Pref As PreferencesDialog, Key As String, Enabled As Boolean)
    For i = 0 To Pref.CustomListView1.Size - 1
        Dim pi As B4XPrefItem = Pref.CustomListView1.GetValue(i)
        If pi.Key = Key Then
            Pref.CustomListView1.GetPanel(i).GetView(0).Enabled = Enabled
            Pref.CustomListView1.GetPanel(i).GetView(1).Enabled = Enabled
        End If
    Next
End Sub

Note that the items will not be enabled automatically. Either set the state each time, or call p.CustomListView1.Clear before you show the dialog. It will cause the items to be recreated.

 

[mike1967]

The code depends on the specific item layout.

Example:

Sub Button2_Click
    p.Title = "dc342"
    p.Theme = p.THEME_DARK
    Dim sf As Object = p.ShowDialog(Data(1), "OK", "CANCEL")
    SetTwoLabelsItemState(p, "Birthday", False)
    Wait For (sf) Complete (Result As Int)
End Sub

Private Sub SetTwoLabelsItemState (Pref As PreferencesDialog, Key As String, Enabled As Boolean)
    For i = 0 To Pref.CustomListView1.Size - 1
        Dim pi As B4XPrefItem = Pref.CustomListView1.GetValue(i)
        If pi.Key = Key Then
            Pref.CustomListView1.GetPanel(i).GetView(0).Enabled = Enabled
            Pref.CustomListView1.GetPanel(i).GetView(1).Enabled = Enabled
        End If
    Next
End Sub

Note that the items will not be enabled automatically. Either set the state each time, or call p.CustomListView1.Clear before you show the dialog. It will cause the items to be recreated.

I try the code and work only one time. If when the field is disable and click on another item field date type it is reenabled.

 

[Erel]

You are correct. It is related to B4XDialog. Disabling items is currently not supported. You can remove items instead.

 

[mike1967]

You are correct. It is related to B4XDialog. Disabling items is currently not supported. You can remove items instead.

Thanks, how i can remove item ? Can provide me samples code ?

 

[Erel]

The simplest way is to call PreferencesDialog.Clear and then add the items that should be visible.