Kivy refresh layout (Async Loading)

Question

I have a ListView that where each item has a AsyncImage and a Label. While the images load it shows the layout with gaps between each item.

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Item

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Item 

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When the first interaction happens (a scroll occurs), the layout refreshes and the gaps disappear.

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Item    
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Item 
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I'd really like to have the layout refresh when an image finishes loading. How do I refresh a layout?

Answer 1

Usually you can ask the widget to update it's canvas by calling widget.canvas.ask_update().

For a layout you could try triggering the layout of the widgets inside it by calling layout_instance.do_layout().