HarmonyOS 视频列表播放怎么实现只有一个视频播放的功能？

参考demo：

@Component
struct PlayVideoItem {
  videoUrl: Resource | string = ''
  previewImgUrl: Resource | string = ''
  videoController: VideoController = new VideoController();
  itemIndex: number = 0
  @Consume @Watch('change') currentIndex: number

  change() {
    if (this.currentIndex === this.itemIndex) {
      this.videoController.start()
    } else {
      this.videoController.pause()
      this.videoController.setCurrentTime(0, SeekMode.Accurate)
    }
  }

  build() {
    Video({
      src: this.videoUrl,
      controller: this.videoController,
      previewUri: this.previewImgUrl
    })
      .width('100%')
      .height('100%')
      .autoPlay(this.currentIndex === this.itemIndex)
      .controls(false)
      .objectFit(ImageFit.Contain)
      .onFinish(() => {
      })
      .onError(() => {
      })
      .onPrepared(() => {
      })
      .onStart(() => {
      })
  }
}

class ItemFlow {
  content: Resource | string = ''
  previewImgUrl: Resource | string = $r('app.media.preview')
  itemIndex: number = 0
  constructor(content: Resource | string, itemIndex: number) {
    this.content = content;
    this.itemIndex = itemIndex
  }
}

@Entry
@Component
struct SwiperVideoPage {
  swiperController: SwiperController = new SwiperController()
  flowArticleModels: ItemFlow[] = []
  @Provide currentIndex: number = 0

  aboutToAppear(): void {
    for (let i = 0; i < 10; i++) {
      this.flowArticleModels.push(new ItemFlow($rawfile('videoTest.mp4'), i))
    }
  }

  build() {
    Column() {
      Swiper(this.swiperController) {
        ForEach(this.flowArticleModels, (item: ItemFlow, index) => {
          PlayVideoItem({ videoUrl: item.content, itemIndex: item.itemIndex, previewImgUrl: item.previewImgUrl })
        }, (item: ItemFlow) => JSON.stringify(item))
      }
      .width('100%')
      .height('100%')
      .vertical(true)
      .indicator(false)
      .onChange((index: number) => {
        this.currentIndex = index
      })
    }
    .height('100%')
    .width('100%')
  }
}
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