人民号文章稿件中的图片滑动时，图片和对应数字不能同步显示

@@ -321,8 +321,8 @@ export struct MultiPictureDetailPageComponent {
         middle: { anchor: "__container__", align: HorizontalAlign.Center }
       })
       .zIndex(1)
-      .onChange((index: number) => {
-        this.swiperIndex = index
+      .onAnimationStart((index: number, targetIndex: number, extraInfo: SwiperAnimationEvent) => {
+        this.swiperIndex = targetIndex
       })
       .onClick(() => {
         this.showDownload = !this.showDownload