HarmonyOS 鸿蒙Next 代码为什么点击不刷新？

HarmonyOS 鸿蒙Next 代码为什么点击不刷新？

这段代码点击不刷新，大家能帮忙看下吗？

[@Observed](/user/Observed)
class HSItemData {
  choose: boolean = false
}

[@Observed](/user/Observed)
class HSTestDataModel {
  itemArray: Array<HSItemData> = new Array()
}

[@Component](/user/Component)
struct HSCell {
  [@ObjectLink](/user/ObjectLink) itemData: HSItemData
  tapEvent?: (itemData: HSItemData) => void

  build() {
    Row() {
      if (this.itemData.choose) {
        Text("选中")
      } else {
        Text("未选中")
      }
    }
    .onClick(() => {
      if (this.tapEvent) {
        this.tapEvent(this.itemData)
      }
    })
    .height(68)
  }
}

@Entry({ routeName: 'HSTestPage' })
@Component
export struct HSTestPage {
  listeners: DataChangeListener[] = []
  @State dataModel: HSTestDataModel = new HSTestDataModel()

  aboutToAppear(): void {
    for (let i = 0; i < 10; i++) {
      this.dataModel.itemArray.push(new HSItemData())
    }

  }

  build() {
    Column() {
      List() {
        LazyForEach(this, (item: HSItemData, index) => {
          HSCell({
            itemData: item, tapEvent: (item) => {
              item.choose = !item.choose
            }
          })

        })
      }
    }
    .height("100%")
  }

  totalCount() {
    return this.dataModel.itemArray.length
  }

  getData(index: number) {
    return this.dataModel.itemArray[index]
  }

  registerDataChangeListener(listener: DataChangeListener) {
    if (this.listeners.indexOf(listener) < 0) {
      this.listeners.push(listener);
    }
  }

  unregisterDataChangeListener(listener: DataChangeListener) {
    const pos = this.listeners.indexOf(listener);
    if (pos >= 0) {
      this.listeners.splice(pos, 1);
    }
  }

  //刷新页面
  reloadTableView(): void {
    this.listeners.forEach(listener => {
      listener.onDataReloaded();
    })
  }
}