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