Usually, this means that the Expanded widget has the wrong ancestor RenderObjectWidget. Typically, E

2023-05-16

Usually, this means that the Expanded widget has the wrong ancestor RenderObjectWidget. Typically, Expanded widgets are placed directly inside Flex widgets. The offending Expanded is currently placed inside a DecoratedBox widget.

翻译:

通常,这意味着扩展的小部件具有错误的RenderObjectWidget祖先。通常,扩展的小部件直接放在Flex小部件中。有问题的扩展文件当前放置在装饰框小部件中。

简言之:你的Expanded组件之上没有用Column或Row或Flex组件包起来。

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