获取 UICollectionView 中 Scroll 的总高度? [英] Get the total height of Scroll within UICollectionView?

问题描述

我有一个 UICollectionView，我想在加载内容时调整它的大小(高度).这个想法是高度应该扩展，以便所有 UICollectionView 单元格都可见.我想知道是否可以获取内容"大小或滚动高度?

I have a UICollectionView that I would like to resize (height) when the content is loaded. The idea is that the height should expand so that all UICollectionView Cells are visible. I was wondering if it was possible to get the "content" size or the scroll height?

谢谢

推荐答案

简单，集合视图是 UIScrollView 的子类，所以你可以读取它的 contentSize 属性.

Easy, a collection view is a subclass of UIScrollView, so you can read its contentSize property.

CGFloat h = self.collectionView.contentSize.height;

表格视图也是如此.

旁注:我什至做过一次 KVO，以便在内容大小发生变化时得到通知.

Sidenote: I even have done KVO on it once, to get notified when the content size changes.

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