HarmonyOS 鸿蒙Next版本下，如何在ArkUI中实现自定义动画控制器？

可以参考Animator 类来创建和重置动画。https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V13/js-apis-animator-V13#create9

Demo：

import {Animator as animator, AnimatorOptions, AnimatorResult } from '@kit.ArkUI';
import { BusinessError } from '@kit.BasicServicesKit';
let options: AnimatorOptions = {
  duration: 1500,
  easing: "friction",
  delay: 0,
  fill: "forwards",
  direction: "normal",
  iterations: 3,
  begin: 200.0,
  end: 400.0
};
let optionsNew: AnimatorOptions = {
  duration: 1500,
  easing: "friction",
  delay: 0,
  fill: "forwards",
  direction: "normal",
  iterations: 5,
  begin: 200.0,
  end: 400.0
};
try {
  let animatorResult:AnimatorResult|undefined = animator.create(options)
  animatorResult.reset(optionsNew);
} catch(error) {
  let message = (error as BusinessError).message
  let code = (error as BusinessError).code
  console.error(`Animator reset failed, error code: ${code}, message: ${message}.`);
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>