相关疑难解决方法(0)

我有一个Row孩子们是Expanded小部件的地方。我的目标是如果没有足够的空间容纳所有孩子，则将其包装起来Row（就像 一样）。Wrap

我已经尝试替换Row为Wrap：

return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Wrap(
          children: [
            Expanded(
              child: element("Sun Glasses"),
            ),
          ],
        )
      ),
    );

但这会导致错误：

The following assertion was thrown while applying parent data.:
Incorrect use of ParentDataWidget.

The ParentDataWidget Expanded(flex: 1) wants to apply ParentData of type FlexParentData to a RenderObject, which has been set up to accept ParentData of incompatible type WrapParentData.

Usually, this means that …