检测最后可见的nscollectionview项目原型 [英] Detect last visible nscollectionview item prototype

问题描述

如何在NSCollectionView中检测最后一个项目在滚动时是否可见？

How is it possible to detect in NSCollectionView when the last item is visible on scrolling ?

我在寻找一个类似的解决方案 this ，但 NSCollectionView 没有类似的布局方法。

I was looking for a similar solution as this but NSCollectionView doesnt have a similar layout methods.

任何提示？

推荐答案

通过注册 boundsDidChange 文档视图的通知，滚动视图已滚动到回调NSScrollView是否被滚动？

It is possible to get noted when the scroll view has scrolled by registering for boundsDidChange notification of the document view as described here Callbacks When an NSScrollView is Scrolled? .

这样可以检查集合的内容的哪一部分视图显示。

That way one can check which part of the content of the collection view is displayed.

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