B4J Question xCustomListView, Click Event not raised

mw71 · Feb 16, 2021

hi, i need a Listview. I use xCustomListView.

Call the Sub with.

B4X:

    Services.ExecuteListView(lbl_vomBerg.Text,Starter.Liste_Berge,ListView_vBerg)

In this called sub i add the Values:

B4X:

Sub ExecuteListView(varSearch As String, Tabelle As List, Listview_Service As CustomListView)
    Loggen.cl("Execute List View, Main: " & varSearch)
    Dim varCols, varColsUp As String

    Listview_Service.Clear

    For i = 0 To Tabelle.Size - 1    'simple begrenzung mit min funktioniert nicht, da auch die Berge drauf zugreifen
        varCols = Tabelle.Get(i)
        varColsUp=varCols.ToUpperCase
        If varColsUp.Contains(varSearch.ToUpperCase) Then Listview_Service.AddTextItem(varCols,varCols)
    Next
End Sub

it works, but the Click Event is not rised??

LucaMs · Feb 16, 2021

You are adding a text to the cCLV, not selecting one; this would trigger the event.

BTW, xCLV does not allows to select an item by code (my xCLV yes ☺).

If enough, you can do:

B4X:

If varColsUp.Contains(varSearch.ToUpperCase) Then
    Listview_Service.AddTextItem(varCols,varCols)
    Listview_Service_ItemClick(Listview_Service.Size - 1, varCols)
End If

Private Sub Listview_Service_ItemClick (Index As Int, Value As Object)
   Log(Index & tab & Value)
End Sub

stevel05 · Feb 16, 2021

The event will be raised in the Module or class that the ListView is defined in. Where have you added the ItemClick sub?

LucaMs · Feb 16, 2021

I thought he expected the event to trigger for adding a new item.

mw71 · Feb 17, 2021

Hello,

my question was too unspecific.

The CLV is "coupled" to a text field.
The user types in this text field, the sub (ExecuteListView, call every text field change) looks for matching entries and enters them into the CLV.
The user should now click on a text field displayed in the CLV and this should be write into the text field.
Unfortunately it does not work. When the user clicks on the CLV Text field to select, the click event is not called.

The List View is add via the Designer.

Erel · Feb 17, 2021

LucaMs said:
BTW, xCLV does not allows to select an item by code (my xCLV yes ☺).

There is no "selection" in the default xCLV. You can use this class to add this feature: https://www.b4x.com/android/forum/t...ion-modes-for-xcustomlistview.114364/#content

mw71 said:
The user types in this text field, the sub (ExecuteListView, call every text field change) looks for matching entries and enters them into the CLV.

You can use B4XDialog + B4XSearchTemplate for this feature (it is more sophisticated and will provide better performance).

What is the CLV event name? Where is the sub that handles the ItemClick event? Post its code.

mw71 · Feb 17, 2021

Hi,

B4XDialog + B4XSearchTemplate do that what i need, but i need it on the Main Page.

I have add the xCLV with the Designer and create the Members:
Private ListView_vBerg As CustomListView
Private Sub ListView_vBerg_ItemClick (Index As Int, Value As Object)

the Code inside is simple:

B4X:

Private Sub ListView_vBerg_ItemClick (Index As Int, Value As Object)
    Log("ListView_vBerg_ItemClick") ''<<== dont fire
    
    lbl_vomBerg.Text=Value
    ListView_vBerg.AsView.Visible=False
End Sub

Erel · Feb 17, 2021

Check the EventName in the designer.

mw71 · Feb 17, 2021

Erel said:
Check the EventName in the designer.

looks o.k. for me.

i have Attach the Projekt. It's in a early (transfer) Status, so that is small enogth (i hope)

LucaMs · Feb 17, 2021

mw71 said:
looks o.k. for me.

i have Attach the Projekt. It's in a early (transfer) Status, so that is small enogth (i hope)

Services in B4J? You can have them in b4a only

mw71 · Feb 17, 2021

it's not realy a Service, it's a Code Module named "Service"

LucaMs · Feb 17, 2021

mw71 said:
it's not realy a Service, it's a Code Module named "Service"

But there is also the Starter.bas. Same thing, I guess.

mw71 · Feb 17, 2021

rigth, also a Code Modul.
there Sub's i call at Start of the Programm. I can move it to other Code Muduls, but for me it is more convenient to arrange the code this way

DonManfred · Feb 17, 2021

mw71 said:
it's a Code Module named "Service"

Switch to a Service or a Class instantiated in a Service.
Code modules can not use any Events. That´s the point better not to use them.

mw71 · Feb 17, 2021

Service in B4J??, i mean that exist only in B4A

In the code modules is no waiting for events or other. I use them e.g. to generate lists or for other "services".

DonManfred · Feb 17, 2021

mw71 said:
Service in B4J??

sorry, my fault. Didn´t realized it is a B4J question here.

LucaMs · Feb 17, 2021

The problem is here:

B4X:

Sub lbl_vomBerg_FocusChanged (HasFocus As Boolean)
'    ListView_vBerg.AsView.Visible=False
End Sub

try so.

mw71 · Feb 18, 2021

thank you @LucaMs, it works.

now i must found a way to hide (visible=false) the Listview if i leave the lbl_vomBerg without select one frome the Listview
(with Select all o.k.)

B4J Question xCustomListView, Click Event not raised

mw71

Active Member

LucaMs

Expert

stevel05

Expert

LucaMs

Expert

mw71

Active Member

Erel

B4X founder

mw71

Active Member

Erel

B4X founder

mw71

Active Member

Attachments

LucaMs

Expert

mw71

Active Member

LucaMs

Expert

mw71

Active Member

DonManfred

Expert

mw71

Active Member

DonManfred

Expert

LucaMs

Expert

mw71

Active Member

Similar Threads

B4J Question xCustomListView, Click Event not raised

Active Member

Expert

Expert

Expert

Active Member

B4X founder

Active Member

B4X founder

Active Member

Attachments

Expert

Active Member

Expert

Active Member

Expert

Active Member

Expert

Expert

Active Member

Similar Threads

Privacy & Transparency

Privacy & Transparency