如何通过在CollectionView中选择一个单元格来更改图像 [英] how do I change an image by selecting a cell in CollectionView

问题描述

目前，我正在一个项目上，我的产品页面是这样的
< img src = https://i.stack.imgur.com/GKldh.jpg alt =在此处输入图片描述>

Currently I am working on a project and my product page is like this

此处正在使用 UIImageView 来显示大图像，而在下面，我正在使用 CollectionView 来滚动一组图像。当我从 CollectionViewCell 单击图像时，我想相应地更改大图像。由于这是我第一次使用这种功能，因此我一无所知。请任何人给我一些建议。谢谢。

Here I am using an UIImageView to show the large image and below that I am using a CollectionView to scroll a set of images. I want to change the large image accordingly when I click an image from the CollectionViewCell . As this is the first time I am using this kind of functionality, I am out of clue. Please anybody give me some suggestion. Thank you.

推荐答案

如果每个图像都在单独的UICollectionViewCell中，请使用

If every image is in a separate UICollectionViewCell, use

override func collectionView(_ collectionView: UICollectionView,
                             didSelectItemAt indexPath: IndexPath) {
    // here you know which item is selected by accessing indexPath.item property, for example:
    let selectedImage = yourImages[indexPath.item]
    bigImageView.image = selectedImage
}

方法，用于检测用户何时选择集合视图项。
为了使用此方法，您需要遵循 UICollectionViewDelegate 并设置 collectionView.delegate = self

method to detect when user selects a collection view item. In order to use this method you need to conform to UICollectionViewDelegate and set collectionView.delegate = self

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