在 html 中常见的布局标签都有 padding 属性，但是 Flutter 中很多 Widget 是没有 padding 属 性。这个时候我们可以用 Padding 组件处理容器与子元素直接的间距。
常用属性
| 属性名 | 功能 |
|---|---|
| padding | padding 值, EdgeInsetss 设置填充的值 |
| child | 子组件 |
/*
* padding 组件 , 间距 组件
*/
class PaddinView extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Padding(
padding: EdgeInsets.fromLTRB(0, 0, 10, 0),
child: GridView.count(
crossAxisCount: 2,
childAspectRatio: 2.0,
children: <Widget>[
Padding(
padding: EdgeInsets.fromLTRB(10, 10, 0, 0),
child: Image.network('https://www.itying.com/images/flutter/1.png',
fit: BoxFit.cover),
),
Padding(
padding: EdgeInsets.fromLTRB(10, 10, 0, 0),
child: Image.network('https://www.itying.com/images/flutter/2.png',
fit: BoxFit.cover),
),
Padding(
padding: EdgeInsets.fromLTRB(10, 10, 0, 0),
child: Image.network('https://www.itying.com/images/flutter/3.png',
fit: BoxFit.cover),
),
Padding(
padding: EdgeInsets.fromLTRB(10, 10, 0, 0),
child: Image.network('https://www.itying.com/images/flutter/4.png',
fit: BoxFit.cover),
),
Padding(
padding: EdgeInsets.fromLTRB(10, 10, 0, 0),
child: Image.network('https://www.itying.com/images/flutter/5.png',
fit: BoxFit.cover),
),
Padding(
padding: EdgeInsets.fromLTRB(10, 10, 0, 0),
child: Image.network('https://www.itying.com/images/flutter/6.png',
fit: BoxFit.cover),
),
],
),
);
}
}
