forked from lxm_flutter/FlutterUnit
45 lines
1.1 KiB
Dart
45 lines
1.1 KiB
Dart
import 'package:flutter/material.dart';
|
|
/// create by 张风捷特烈 on 2020-04-19
|
|
/// contact me by email 1981462002@qq.com
|
|
/// 说明:
|
|
|
|
// {
|
|
// "widgetId": 73,
|
|
// "name": 'Opacity基本使用',
|
|
// "priority": 1,
|
|
// "subtitle":
|
|
// "【child】 : 孩子组件 【Widget】\n"
|
|
// "【opacity】 : 透明度0~1 【double】",
|
|
// }
|
|
class CustomOpacity extends StatefulWidget {
|
|
const CustomOpacity({Key? key}) : super(key: key);
|
|
|
|
@override
|
|
_CustomOpacityState createState() => _CustomOpacityState();
|
|
}
|
|
|
|
class _CustomOpacityState extends State<CustomOpacity> {
|
|
double _opacity = 0.2;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Column(
|
|
children: [_buildSlider(), _buildOpacity()],
|
|
);
|
|
}
|
|
|
|
// 创建Opacity
|
|
Widget _buildOpacity() => Opacity(
|
|
opacity: _opacity,
|
|
child: Image.asset(// 图片
|
|
'assets/images/icon_head.webp',
|
|
width: 100,
|
|
),
|
|
);
|
|
Widget _buildSlider() => Slider(
|
|
divisions: 20,
|
|
label: _opacity.toString(),
|
|
value: _opacity,
|
|
onChanged: (v) => setState(() => _opacity = v));
|
|
}
|