您要查找的代码如下
SizedBox(
height: 100,
child: Row(
children: [
Container(width: 100,color: Colors.blue),
Expanded(
child: Column(
children: [
Container(height: 30,color: Colors.green,),
Expanded(
child: Row(
children: [
Container(width: 100,color: Colors.purple),
Expanded(child:
Container(color: Colors.pinkAccent),)
],
),
),
],
),
)
],
),
),
输出