forked from lxm_flutter/FlutterUnit
53 lines
1.3 KiB
Dart
53 lines
1.3 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": 89,
|
|
// "name": 'FadeTransition基本使用',
|
|
// "priority": 1,
|
|
// "subtitle":
|
|
// "【child】 : 孩子组件 【Widget】\n"
|
|
// "【opacity】 : 动画 【Animation<double>】",
|
|
// }
|
|
class CustomFadeTransition extends StatefulWidget {
|
|
@override
|
|
_CustomFadeTransitionState createState() => _CustomFadeTransitionState();
|
|
}
|
|
|
|
class _CustomFadeTransitionState extends State<CustomFadeTransition>
|
|
with SingleTickerProviderStateMixin {
|
|
AnimationController _ctrl;
|
|
|
|
@override
|
|
void initState() {
|
|
_ctrl = AnimationController(vsync: this, duration: Duration(seconds: 2));
|
|
_ctrl.forward();
|
|
super.initState();
|
|
}
|
|
|
|
@override
|
|
void dispose() {
|
|
_ctrl.dispose();
|
|
super.dispose();
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return GestureDetector(
|
|
onTap: () => _ctrl.forward(from: 0),
|
|
|
|
child: Container(
|
|
color: Colors.grey.withAlpha(22),
|
|
width: 100,
|
|
height: 100,
|
|
child: FadeTransition(
|
|
opacity: CurvedAnimation(parent: _ctrl, curve: Curves.linear),
|
|
child: Icon(Icons.android, color: Colors.green, size: 60),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|