HarmonyOS 鸿蒙Next Refresh如何自定义，下拉的动画

可以参考官方文档中的示例2和示例3，看是否满足需求：https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/ts-container-refresh-V5，或者使用imageAnimator的实现方式，文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V13/ts-basic-components-imageanimator-V13

参考示例如下：

@Entry
@Component
struct Index3 {
  @State isRefreshing: boolean = false
  @State counter: number = 0
  @State durationTime: number = 100 //每个数字动画时长
  @State aniState: AnimationStatus = AnimationStatus.Initial

  @Builder
  RefreshAnimation() {
    Column() {
      ImageAnimator()
        .images([
          {
            src: $r('app.media.img1'),
            duration: this.durationTime
          },
          {
            src: $r('app.media.img2'),
            duration: this.durationTime
          },
          {
            src: $r('app.media.img3'),
            duration: this.durationTime
          },
          {
            src: $r('app.media.img4'),
            duration: this.durationTime
          }
        ])
        .state(this.aniState)
        .reverse(false)
        .fillMode(FillMode.Both)
        .iterations(-1)
        .width(40)
        .height(40)
        .margin({ top: 10 })
        .onStart(() => {
          console.info('LoadingDialog Start')
        })
        .onPause(() => {
          console.info('LoadingDialog Pause')
        })
        .onRepeat(() => {
          console.info('LoadingDialog Repeat')
        })
        .onCancel(() => {
          console.info('LoadingDialog Cancel')
        })
        .onFinish(() => {
          console.info('LoadingDialog Finish')
        })
    }
  }

  build() {
    Column() {
      Refresh({
        refreshing: $$this.isRefreshing,
        offset: 120,
        friction: 100,
        builder: this.RefreshAnimation
      }) {
        Text('Pull Down and refresh: ' + this.counter)
          .fontSize(30)
          .margin(10)
      }
      .onStateChange((refreshStatus: RefreshStatus) => {
        console.info('Refresh onStatueChange state is ' + refreshStatus)
      })
      .onRefreshing(() => {
        this.aniState = AnimationStatus.Running
        setTimeout(() => {
          this.counter++
          this.isRefreshing = false
          this.aniState = AnimationStatus.Stopped
        }, 1000)
        console.log('onRefreshing test')
      })
    }
  }
}