HarmonyOS swiper + LazyForEach使用问题

.onChange((index: number) => {  
  console.info("打印index" + index)  
  console.log('总数' + this.resDataList.totalCount())  
  if (index === 0) {  
    this.resDataList.addData(0, getFullDate2(this.selectedDays))  
    this.swiperController.changeIndex(1, false)  
    console.log('added')  
  } else if (index >= this.resDataList.totalCount() - 2) {  
    this.resDataList.addData(this.resDataList.totalCount(), getFullDate1(this.selectedDays))  
  }