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横竖屏切换导致滚动条滚动

当通过横竖屏样式区分列表单条高度时,横屏竖屏切换会发生相应滚动,比如竖屏模式下第10条内容滚动距离是100,旋转成为横屏却能放15条。所以发生了滚动

我的思路是在旋转之前记录视窗内最上面元素的位置,旋转后滚动到相应元素。但是我只知道怎么监听旋转,怎么监听旋转前旋转后?


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监听orientationchange可以不


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