HarmonyOS 鸿蒙Next Swiper嵌套List在响应滚动回调监听里，拿不到离开垂直方向的偏移量 let offsetY = this.listScroller.currentOffset().yOffset;

是List带的scroller的问题，listScroller不能一直用一个，每个swiper页面都需要用一个新的Scroller，参考下面的示例，可以正常得到yOffset：

class MyDataSource implements IDataSource {
  private list: number[] = []

  constructor(list: number[]) {
    this.list = list
  }

  totalCount(): number {
    return this.list.length
  }

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

  registerDataChangeListener(listener: DataChangeListener): void {
  }

  unregisterDataChangeListener() {
  }
}

@Entry
@Component
struct Index {
  private swiperControl:SwiperController = new SwiperController();
  private data: MyDataSource = new MyDataSource([]);
  private listData: number[] = []
  private listScroller: Scroller[] = [];

  aboutToAppear(): void {
    let list: number[] = []
    for (let i = 1; i <= 10; i++) {
      list.push(i);
      this.listData.push(i);
      this.listScroller.push(new Scroller());
    }
    this.data = new MyDataSource(list)
  }

  build() {
    RelativeContainer() {
      Swiper(this.swiperControl) {
        LazyForEach(this.data, (item: string, index: number) => {
          Column() {
            List({scroller: this.listScroller[index]}) {
              ForEach(this.listData, (item:number, index: number) => {
                ListItem() {
                  Text(item.toString())
                    .width('90%')
                    .height(160)
                    .backgroundColor(0xAFEEEE)
                    .textAlign(TextAlign.Center)
                    .fontSize(30)
                }.onClick(()=>{
                  console.info("test toffset index: %d", index)
                })
              })
            }.onReachEnd(()=>{
              let offsetY = this.listScroller[index].currentOffset().yOffset
              console.info("get toffset: %d", offsetY);
            })
            .height('90%')
            .width('100%')
          }
          .height('100%')
          .width('100%')
        }, (item: string) => item)
      }

    }
    .height('100%')
    .width('100%')
  }
}