問題描述
我有一個(gè) ListView，其中每個(gè)項(xiàng)目都有一個(gè) AsyncImage 和一個(gè)標(biāo)簽.加載圖像時(shí)，它會顯示每個(gè)項(xiàng)目之間有間隙的布局.
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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當(dāng)?shù)谝淮谓换グl(fā)生(發(fā)生滾動)時(shí)，布局刷新并且間隙消失.
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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我真的很想在圖像加載完成后刷新布局.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?
推薦答案
通常你可以通過調(diào)用 widget.canvas.ask_update().
Usually you can ask the widget to update it's canvas by calling widget.canvas.ask_update().
對于布局，您可以嘗試通過調(diào)用 layout_instance.do_layout().
For a layout you could try triggering the layout of the widgets inside it by calling layout_instance.do_layout().
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