Flutter运行时报如下错误
An InputDecorator, which is typically created by a TextField, cannot have an unbounded width.
原因
TextField 没有被限定大小。
解决方法
使用Container包起来，如果时column或者row可以用Expanded包起来。
content: Container( width: 200, child: TextField( controller: _textEditingController, decoration: const InputDecoration(hintText: "请输入数据"), ), ),
