Flutter RenderBox未布局:RenderFittedBox#79644 relayoutBoundary=up1
我花了4个小时,无法修复此错误: RenderBox未布局:RenderFittedBox#79644 relayoutBoundary=up1 “package:flatter/src/rendering/box.dart”:失败的断言:第1687行 位置12:“hasSize” 我的代码:Flutter RenderBox未布局:RenderFittedBox#79644 relayoutBoundary=up1,flutter,Flutter,我花了4个小时,无法修复此错误: RenderBox未布局:RenderFittedBox#79644 relayoutBoundary=up1 “package:flatter/src/rendering/box.dart”:失败的断言:第1687行 位置12:“hasSize” 我的代码: Container( width: 50, height: 12, alignment: decorationAlignment,
Container(
width: 50,
height: 12,
alignment: decorationAlignment,
child: FittedBox(
fit: BoxFit.scaleDown,
child: decoration,
),
),
但是,如果我删除alignment:decorationAlignment
,则不会发生错误
你能告诉我为什么吗
非常感谢 添加装饰性标记和装饰的值。默认值似乎是
Container()
,大小已过添加装饰性标记和装饰的值。默认值似乎是Container()
,大小已过