1. AnimatedSwitcher>
2. controller.drive(Tween(begin:xxx,end:xxx))
3. Tween(begin:xxx,end:xxx).chain(CurveTween(curve: Curves.elasticInOut)).animate(controller)
4. CurveTween(curve: Inteval(0.5,1.0)) 动画区间（表示从后半段才开始动画）

示例：

import 'package:flutter/material.dart';
// 核心：TweenSequenceItem、Transform、Matrix、类接口回调
class ShakeAnimatedWidget extends StatefulWidget {

  double shake;
  Widget child;
  Alignment alignment;
  ShakeAnimatedController? controller;
  // 动画执行次数  0 则无限循环  默认 1次
  int loopCount;
  Duration? duration;
  //摆动幅度
  double amplitude;

  ShakeAnimatedWidget({
    Key? key,
    double shake = 1.0,
    required Widget child,
    Alignment alignment = Alignment.center,
    ShakeAnimatedController? controller,
    int loopCount = 1,
    Duration? duration,
    double amplitude = 15,
  }): this.shake = shake,
      this.child = child,
      this.controller = controller,
      this.alignment = alignment,
      this.duration = duration,
      this.loopCount = loopCount,
      this.amplitude = amplitude,
        super(key: key);

  @override
  ShakeAnimatedWidgetState createState() => new ShakeAnimatedWidgetState();
}

class ShakeAnimatedWidgetState extends State<ShakeAnimatedWidget> with SingleTickerProviderStateMixin {
  AnimationController? _controller;
  Animation<double>? _animation;

  @override
  Widget build(BuildContext context) {
    assert(_animation!=null);
    return AnimatedBuilder(
      animation: _animation!,
      builder: (BuildContext context, Widget? child) {
        return Transform(
          transform: Matrix4.translationValues(_animation!.value * widget.amplitude, 0, 0),
          alignment: widget.alignment,
          child: widget.child
        );
      },
    );
  }

  // 用于记录 动画执行次数
  int nowExeAnimatedNum = 1;
  @override
  void initState() {
    super.initState();
    _controller = AnimationController(duration: widget.duration??Duration(milliseconds: 300),vsync: this);
    _animation = TweenSequence<double>([
      ///TweenSequenceItem来组合其他的Tween
      TweenSequenceItem<double>(
          tween: Tween(begin: 0, end: widget.shake), weight: 1),
      TweenSequenceItem<double>(
          tween: Tween(begin: widget.shake, end: 0), weight: 1),
      TweenSequenceItem<double>(
          tween: Tween(begin: 0, end: -widget.shake), weight: 1),
      TweenSequenceItem<double>(
          tween: Tween(begin: -widget.shake, end: 0), weight: 1),
      TweenSequenceItem<double>(
          tween: Tween(begin: 0, end: widget.shake), weight: 1),
      TweenSequenceItem<double>(
          tween: Tween(begin: widget.shake, end: 0), weight: 1),
    ]).chain(CurveTween(curve: Curves.linear)).animate(_controller!);


    _controller?.addStatusListener(handlerStatus);

    widget.controller?.addShakeAnimatedListener(handleListener);
  }

  @override
  void dispose() {
    super.dispose();
    _controller?.dispose();
    _controller = null;
    _animation = null;
    widget.controller?.removeShakeAnimatedListener();
  }

  handlerStatus(status) {
    // 动画执行 一个循环 否则 不用处理 下面的 状态
    if(status == AnimationStatus.completed){
      if(widget.loopCount == 0){
        _controller?.forward();
      }else{
        if(nowExeAnimatedNum < widget.loopCount){
          _controller?.forward();
          nowExeAnimatedNum ++;
        }else{
          widget.controller?.isAnimating = false;
        }
      }
    }
    // else if(status == AnimationStatus.dismissed){   /// 动画结束 停留在 开始位置
    //
    // }
  }

  void handleListener(bool start) {
    nowExeAnimatedNum = 1;
    if(start){
      _controller?.reset();
      _controller?.forward();
    }else{
      _controller?.stop();
    }
  }
}
// 当然可以直接将 AnimatedController传过来 但是限制就比较大 只能调用 Controller一些方法 还有监听啥的。所以吧这些工作全部 到源类  Function 作为桥梁 ye
// 类似接口回调 有点意思啊
typedef ShakeAnimatedListener = void Function(bool start);
class ShakeAnimatedController{

  ShakeAnimatedListener? listener;

  bool isAnimating = false;

  addShakeAnimatedListener(ShakeAnimatedListener listener){
    this.listener = listener;
  }

  void forward(){
    if(listener!=null){
      isAnimating = true;
      listener!(true);
    }
  }

  void stop(){
    if(listener!=null){
      isAnimating = false;
      listener!(false);
    }
  }

  void removeShakeAnimatedListener(){
    listener = null;
  }
}