Android Question [Custom List View] Best Way For change Item Height?

[Roberto P.]

HI to All
I have to dynamically change the height of an element inserted in the Custom ListView.
To start I deleted item and inserted again with modified height.
Is there a better way?
thanks

 

[Erel]

You need to remove and insert back the item. You don't need to create a new item (though it will not really matter).

 

[Roberto P.]

Hi Erel,
It is what I did.

I think it would be better to add the function to change the height of the elements without having to delete and back the item.

thanks

 

[LucaMs]

I think it would be better to add the function to change the height of the elements without having to delete and back the item.

... resizing each item's view automatically?

 

[LucaMs]

... resizing each item's view automatically?

Well, there might be a parameter to automatically resize or add/cut space on top or bottom (5 constants). (?)

 

[Roberto P.]

I'll explain with an example.
I have to be able to increase \ decrease the height of a single element when I press the button.

 

[LucaMs]

So you need a "collapsible item".

I think @Informatix's CheckList has it.

 

[Roberto P.]

exact! But with custom listview.

I'll watch the indicated class.

thank you

 

[klaus]

You could use a routine like this:

Sub ChangeItemPanelHeight(clv As CustomListView, Index As Int, DeltaHeight As Int)
    Private i As Int
    Private pnl1, pnl2 As Panel
    Private sv As ScrollView
    sv = clv.AsView   'gets the CustoListViews' ScrollView
    pnl1 = sv.Panel    'gets the ScrollView.Panel
    pnl2 = pnl1.GetView(Index)   'gets the item Panel with the given Index
    pnl2.Height = pnl2.Height + DeltaHeight   'changes the item Panel height

    For i = Index + 1 To pnl1.NumberOfViews -1   'changes the Top property of all the Panels above the index Panel
        Private pnl As Panel
        pnl = pnl1.GetView(i)
        pnl.Top = pnl.Top + DeltaHeight
    Next

    sv.Panel.Height = sv.Panel.Height + DeltaHeight   'changes the ScrollView.Panel.Height
End Sub

The advantage of this routine is that you use in your code, without changing the Class code.
The function could of course also be done in the Class code.

 

[Roberto P.]

Many thanks Klaus
I add the function in the standard class.