Android Question [Solved] Resize CustomListView with a one long panel

asales · Mar 6, 2026

I tried several codes in the forum to resize a CLV after load a layout with a long panel, without success.
There are 3 labels in the long panel (top, middle and bottom) and I can't scroll the CLV to see the bottom label.

My example is in attach.

How can I fix it?
Thanks in advance for any tips.

LucaMs · Mar 6, 2026

Changed layout2.

You need to anchor the container panel (the one in the layout) top and bottom and make it as tall as the variant, no taller.

TILogistic · Mar 6, 2026

Are you using the Custom ListView for a single item?

And is this item taller than the visible area of the Custom ListView?

+++++++++++++

The typical problem when you have a single, very large item in a CustomListView is that the CustomListView incorrectly calculates the height when adding it, especially if you use LoadLayout or if the content changes afterward.

The safest solution is to add the panel, wait for the layout to calculate, and then resize the item.

This would cause CustomListView to recalculate the scroll area correctly.

B4X:

    Dim p As B4XView = xui.CreatePanel("")
    p.SetLayoutAnimated(0,0,0,clvTest.AsView.Width,clvTest.AsView.Height)

    p.LoadLayout("layout2")

    clvTest.Add(p,"")

    Sleep(0)

    Log(p.Height)
    Log(panel1.Height)

    clvTest.ResizeItem(0, panel1.Height)

test:

PaulMeuris · Mar 6, 2026

And you could also try this from your code (added second and third line):

B4X:

    clvTest.Add(CreateListItem(Root.Width, Root.Height),-1)
    clvTest.ResizeItem(0,DipToCurrent(Root.Height))
'    clvTest.ResizeItem(0,DipToCurrent(Root.Width))        ' in landscape orientation

The first item is resized.
I tested the code on my tablet and used the DipToCurrent to adjust the dip sizes.
In landscape orientation the width can be used in stead of the height.

TILogistic · Mar 6, 2026

Techniques used and learned when loading the design into an element and controlling the displacement in the visible area of the customlistview based on its size.

asales · Mar 7, 2026

TILogistic said:
Are you using the Custom ListView for a single item?

And is this item taller than the visible area of the Custom ListView?

Yes. Yes.

It is a long form. I'm using ScrollView but now I try to port to B4i. This is why I'm using CLV.

Thanks @LucaMs, @TILogistic, @PaulMeuris.

The soluction of TILogistic works better in B4A and B4J.
I'm get struggled with this code in B4i, but I'll post in the correct forum.

asales · Mar 7, 2026

The soluction to B4i is here:

Views Resize after Loading in CustomListView

Hello all, Using a CLV in a B4i project I have some elements inside the items those must to be measured and adjusted to adapt the content. This question reflects on the CLV item panel height which is runtime calculated and adjusted. Some labels widths must to be adjusted also. The...

www.b4x.com

"Make sure that the "handle resize event" option is unchecked in the item's layout file."

Android Question [Solved] Resize CustomListView with a one long panel

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Views Resize after Loading in CustomListView

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