奇异果刷新布局(异步加载) [英] Kivy refresh layout (Async Loading)

问题描述

我有一个ListView，其中每个项目都有一个AsyncImage和一个Label.加载图像时，它会显示布局，每个项目之间都有间隙.

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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第一次交互(发生滚动)时，布局会刷新，间隙会消失.

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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我真的很想在图像加载完成后刷新布局.如何刷新布局?

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

推荐答案

通常，您可以通过调用

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

对于布局，您可以尝试通过调用

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

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