forked from lxm_flutter/FlutterUnit
52 lines
1.5 KiB
Dart
52 lines
1.5 KiB
Dart
import 'package:flutter/material.dart';
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/// create by 张风捷特烈 on 2020-03-23
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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": 118,
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// "name": 'AnimatedOpacity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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// "【duration】 : 动画时长 【Duration】\n"
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// "【onEnd】 : 动画结束回调 【Function()】\n"
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// "【curve】 : 动画曲线 【Duration】\n"
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// "【opacity】 : 透明度 【double】",
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// }
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class CustomAnimatedOpacity extends StatefulWidget {
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@override
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_CustomAnimatedOpacityState createState() => _CustomAnimatedOpacityState();
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}
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class _CustomAnimatedOpacityState extends State<CustomAnimatedOpacity> {
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double _opacity = 1.0;
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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>[
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Switch(
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value: _opacity == 0,
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onChanged: (v) {
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setState(() {
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_opacity = v ? 0 : 1.0;
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});
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}),
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Container(
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color: Colors.grey.withAlpha(22),
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width: 200,
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height: 100,
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child: AnimatedOpacity(
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duration: Duration(seconds: 1),
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curve: Curves.fastOutSlowIn,
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opacity: _opacity,
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onEnd: () => print('End'),
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child: Icon(Icons.android, color: Colors.green, size: 60),
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),
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),
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],
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);
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}
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}
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