按单元格而不是屏幕分页UICollectionView [英] Paging UICollectionView by cells, not screen

问题描述

我有 UICollectionView 水平滚动，并且每个屏幕总共有2个单元并排。我需要在一个单元格的开头停止滚动。启用分页后，集合视图会滚动整个页面，一次是2个单元格，然后停止。

I have UICollectionView with horizontal scrolling and there are always 2 cells side-by-side per the entire screen. I need the scrolling to stop at the begining of a cell. With paging enabled, the collection view scrolls the whole page, which is 2 cells at once, and then it stops.

我需要启用单个单元格的滚动，或者在单元格的边缘停止滚动多个单元格。

I need to enable scrolling by a single cell, or scrolling by multiple cells with stopping at the edge of the cell.

我试图继承 UICollectionViewFlowLayout 并实现方法 targetContentOffsetForProposedContentOffset ，但到目前为止我只能破坏我的集合视图并停止滚动。有没有更简单的方法来实现这个以及如何，或者我真的需要实现 UICollectionViewFlowLayout 子类的所有方法？谢谢。

I tried to subclass UICollectionViewFlowLayout and to implement the method targetContentOffsetForProposedContentOffset, but so far I was only able to break my collection view and it stopped scrolling. Is there any easier way to achieve this and how, or do I really need to implement all methods of UICollectionViewFlowLayout subclass? Thanks.

推荐答案

好的，所以我在这里找到了解决方案： targetContentOffsetForProposedContentOffset：withScrollingVelocity without subclassing UICollectionViewFlowLayout

OK, so I found the solution here: targetContentOffsetForProposedContentOffset:withScrollingVelocity without subclassing UICollectionViewFlowLayout

我应该搜索 targetContentOffsetForProposedContentOffset 在开头。

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