SizedBox
SizedBox是一个固定尺寸的盒子，一般用来作为间隔。
class LayoutDemo extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Column(
children: <Widget>[
SizedBox(
width: 100,
height: 100,
child: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10.0),
color: Colors.green,
),
child: Icon(Icons.ac_unit, color: Colors.white),
),
),
SizedBox(
height: 20.0,
),
Icon(Icons.person, size: 80, color: Colors.red),
Icon(Icons.edit, size: 80, color: Colors.red),
Icon(Icons.poll, size: 80, color: Colors.red),
],
);
}
}
效果
SizedBox
