第11章组件装饰和视觉效果-Opacity不透明度处理
防采集标记:亢少军老师的课程和资料
import 'package:flutter/material.dart';
class LayoutDemo extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text('Opacity不透明度示例'),
),
body: new Center(
child: new Opacity(
opacity: 0.3, //不透明度设置为0.3
child: new Container(
width: 250.0,
height: 100.0,
decoration: new BoxDecoration(
color: Colors.black, //背景色设置为纯黑
),
child: Text(
'不透明度为0.3',
style: TextStyle(
color: Colors.white,
fontSize: 28.0,
),
),
),
),
),
);
}
}
void main() {
runApp(
new MaterialApp(
title: 'Opacity不透明度示例',
home: new LayoutDemo(),
),
);
}
- Flutter技术入门与实战: http://product.dangdang.com/26485813.html
- Flutter交流学习群:894109159
- Flutter开源项目请关注: https://github.com/kangshaojun
- Flutter****:https://edu.****.net/lecturer/2436
@作者: 亢少军