如何在 iOS 中监听 UICollectionViewCell 的用户触摸？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/26459668/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to listen to user touches for UICollectionViewCell in iOS?
提问by malhobayyeb
I have implemented a UICollectionViewthat holds list of UIImageView objects.
我已经实现了一个UICollectionView包含 UIImageView 对象列表的。
I want the user to be taken to YouTube with specific URL when he touched an image.
我希望用户在触摸图像时被带到带有特定 URL 的 YouTube。
But I don't know how to add touch listener for each UICollectionViewCell:
但我不知道如何为每个UICollectionViewCell添加触摸监听器：
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
var cell: PhotoCell = collectionView.dequeueReusableCellWithReuseIdentifier("PhotoCell", forIndexPath: indexPath) as PhotoCell
cell.loadImage(thumbnailFileURLs[indexPath.row], originalImagePath: originalFileURLs[indexPath.row])
return cell
}
My PhotoCell class has a member variable that holds the URL to youtube.
我的 PhotoCell 类有一个成员变量，用于保存指向 youtube 的 URL。
For each PhotoCell object, when pressed, I want my app to send the user to youtube.com website or APP (if installed)
对于每个 PhotoCell 对象，当按下时，我希望我的应用程序将用户发送到 youtube.com 网站或应用程序（如果已安装）
回答by mustafa
You should implement UICollectionViewDelegateprotocol method collectionView(_:didSelectItemAtIndexPath:). When you press one of your collection view cells this method get called. Here is sample implementation
您应该实现UICollectionViewDelegate协议方法collectionView(_:didSelectItemAtIndexPath:)。当您按下一个集合视图单元格时，此方法会被调用。这是示例实现
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
let url = thumbnailFileURLS[indexPath.item]
if UIApplication.sharedApplication().canOpenURL(url) {
UIApplication.sharedApplication().openURL(url)
}
}
By the way I don't know where you get url. So I improvised a bit :)
顺便说一下，我不知道你从哪里得到 url。所以我即兴了一点:)
