我在颤动中有以下代码。
Widget build(BuildContext context) {
return Center(
child: Card(
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Row(
children: <Widget>[
SizedBox(
height: 100,
child: ListTile(
leading: IconButton(
iconSize: 30,
icon: roundImage(post.userPicture, Icon(Icons.person)),
onPressed: () {},
),
subtitle: Text(this.post.message),
)),
],
),
],
),
),
);
}
但我收到这个错误:
════════ Exception caught by rendering library ═════════════════════════════════
RenderBox was not laid out: RenderPhysicalShape#7713c relayoutBoundary=up3
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1687 pos 12: 'hasSize'
The relevant error-causing widget was
Card
我已经添加了SizedBox
in the Row
但它仍然抱怨hasSize
错误。我该如何解决这个问题?
目前尚不清楚您想要实现什么目标,但不要使用SizedBox
你可以尝试包裹在里面Expanded
or Flexible
小部件。
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