Flutter：SlideTransition位移动画，Interval动画延迟
class _MyHomePageState extends State<MyHomePage> with SingleTickerProviderStateMixin{
// 定义 AnimationController
late AnimationController _controller;
@override
void initState() {
super.initState();
// 初始化 AnimationController
_controller = AnimationController(
duration: const Duration(milliseconds: 500),
vsync:this, // 让程序和手机的刷新频率统一
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('标题'),
),
body: Center(
child: Column(
children: [
SlideTransition(
// 方块的宽度100，设置x轴y轴位移 0.5：也就是x轴向右移动50，同时向下移动50
position: _controller.drive(Tween(begin: Offset(0, 0),end: Offset(0.5, 0.5))),
child: Container(
alignment: Alignment.center,
width: 100,
height: 100,
color: Colors.red,
),
),
ElevatedButton(onPressed: (){
_controller.repeat(reverse: true); // repeat(reverse: true) 是否循环播放
}, child: const Text('重复')),
ElevatedButton(onPressed: (){
_controller.stop();
}, child: const Text('停止')),
ElevatedButton(onPressed: (){
_controller.forward();
}, child: const Text('移动')),
ElevatedButton(onPressed: (){
_controller.reverse();
}, child: const Text('返回')),
ElevatedButton(onPressed: (){
_controller.reset();
}, child: const Text('重置')),
],
),
),
);
}
}