IOS不支持swiper视频滑动？如何获取swiper-itemvideoId？ - WXOPEN Club

如代码，循环显示视频后，IOS中上下滑动无效？视频也不支持预加载吧？

<swiper current="{{activeIndex}}" vertical="{{true}}" duration="300" bindchange="bindChange">

<block wx:for="{{videoList}}" wx:for-index="idx" wx:for-item="videos" wx:key="videos.videoId">

<swiper-item data-id="{{videos.videoId}}">

<video id="{{videos.videoId}}" src="{{videos.src}}" poster="{{videos.poster}}">video>

swiper-item>

block>

swiper>

另外在bindChange中怎么动态获取swiper-item的videoId？