如何获取 UICollectionViewCell 的矩形? [英] How to get the rect of a UICollectionViewCell?

问题描述

UITableView 有 rectForRowAtIndexPath: 方法，但在 UICollectionView 中不存在此方法.我正在寻找一种干净的方法来获取单元格的边界矩形，也许我可以将其添加为 UICollectionView 上的类别.

UITableView has the method rectForRowAtIndexPath:, but this does not exist in UICollectionView. I'm looking for a nice clean way to grab a cell's bounding rectangle, perhaps one that I could add as a category on UICollectionView.

推荐答案

我发现的最佳方法如下:

The best way I've found to do this is the following:

Objective-C

UICollectionViewLayoutAttributes *attributes = [self.collectionView layoutAttributesForItemAtIndexPath:indexPath];

斯威夫特

let attributes = collectionView.layoutAttributesForItem(at: indexPath)

然后您可以通过 attributes.frame 或 attributes.center

Then you can access the location through either attributes.frame or attributes.center

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