一，效果图

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

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

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

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

  registerDataChangeListener(listener: DataChangeListener): void {
    this.listener = listener
  }

  unregisterDataChangeListener() {
  }
}

// 测试用例
@Entry
@Component
struct SwiperExamplePage1 {
  private swiperController: SwiperController = new SwiperController()
  private data: MyDataSource = new MyDataSource([])
  @State currentIndex: number = 0; // 用于存储当前的索引
  aboutToAppear(): void {
    let list = []
    for (var i = 1; i <= 10; i++) {
      list.push(i.toString());
    }
    this.data = new MyDataSource(list)
  }

  onPageShow(){
    this.navigateToIndex(5)
  }
  // 实现跳转到指定索引的方法
  navigateToIndex(index: number): void {
    const difference = index - this.currentIndex; // 计算差值

    if (difference > 0) {
      for (let i = 0; i < difference; i++) {
        this.swiperController.showNext(); // 向右滑动
      }
    } else if (difference < 0) {
      for (let i = 0; i < Math.abs(difference); i++) {
        this.swiperController.showPrevious(); // 向左滑动
      }
    }
  }

  build() {
    Column({ space: 5 }) {
      Swiper(this.swiperController) {
        LazyForEach(this.data, (item: string) => {
          Text(item).width('90%').height(160).backgroundColor(0xAFEEEE).textAlign(TextAlign.Center).fontSize(30)
        }, item => item)
      }
      .cachedCount(2)
      .index(1)
      .autoPlay(true)
      .interval(4000)
      .indicator(true)
      .loop(true)
      .duration(1000)
      .itemSpace(0)
      .curve(Curve.Linear)
      .onChange((index: number) => {
        this.currentIndex=index
        console.info(index.toString())
      })

      Row({ space: 12 }) {
        Button('showNext')
          .onClick(() => {

          })
        Button('showPrevious')
          .onClick(() => {
            this.swiperController.showPrevious()
          })
      }.margin(5)
    }.width('100%')
    .margin({ top: 5 })
  }
}