Swift - UICollectionViewCell 中的 UIButton 不可点击 [英] Swift - UIButton in UICollectionViewCell not clickable

问题描述

我目前有一个 UICollectionViewController 来显示我的所有新闻文章.对于我的新闻项目，我创建了一个自定义 UICollectionViewCell，右上角有一个小按钮.

I currently have a UICollectionViewController to display all my news articles. For my news items, I have created a custom UICollectionViewCell with a small button in the top right corner.

问题是它只有在我将 feedCell 设置为 isUserInteractionEnabled = true 时才有效.我只希望 newsMenu 按钮可以点击，而不是整个单元格都可以选择.

The problem is that it is only working when I set my feedCell to isUserInteractionEnabled = true. I only want the newsMenu button to be clickable, not have the whole cell to be selectable.

我如何实现这一目标?

override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {

    let feedCell = collectionView.dequeueReusableCell(withReuseIdentifier: cellId, for: indexPath) as! FeedCell

    feedCell.post = m_Collection?[(indexPath as NSIndexPath).item]

    feedCell.newsMenu.addTarget(self, action: #selector(imageTapped), for: .touchUpInside)

    return feedCell
}

func imageTapped(button: UIButton)
{
    let newsAction = UIAlertController(title: "Message", message: "Do you want to edit or delete this news message?", preferredStyle: .actionSheet)

    let editAction = UIAlertAction(title: "Edit news", style: .default, handler: menuEditNews)
    let deleteAction = UIAlertAction(title: "Delete news", style: .destructive, handler: menuDeleteNews)
    let cancelAction = UIAlertAction(title: "Cancel", style: .cancel)

    newsAction.addAction(editAction)
    newsAction.addAction(deleteAction)
    newsAction.addAction(cancelAction)

    self.present(newsAction, animated: true, completion: nil)
}

我的自定义单元格:

class FeedCell: UICollectionViewCell {

override init(frame: CGRect) {
    super.init(frame: frame)

    setupViews()
}

required init?(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
}

let titleLabel: UILabel = {
    let label = UILabel()
    label.adjustsFontSizeToFitWidth = false
    label.lineBreakMode = .byTruncatingTail
    label.numberOfLines = 2
    return label
}()

let profileImageView: UIImageView = {
    let imageView = UIImageView()
    imageView.translatesAutoresizingMaskIntoConstraints = false
    imageView.image = UIImage(named: "")
    imageView.layer.cornerRadius = 22
    imageView.layer.masksToBounds = true
    return imageView
}()

let newsTextView: UITextView = {
    let textView = UITextView()
    textView.isScrollEnabled = false
    textView.font = UIFont (name: "Helvetica", size: 13)
    return textView
}()

let newsMenu: UIButton = {
    let newsMenu = UIButton()
    newsMenu.isUserInteractionEnabled = true
    newsMenu.setImage(UIImage(named: "news_menuitem"), for: UIControlState())
    return newsMenu
}()

func setupViews() {
    backgroundColor = UIColor.white

    addSubview(titleLabel)
    addSubview(profileImageView)
    addSubview(newsTextView)
    addSubview(newsMenu)

    addConstraintsWithFormat("H:|-8-[v0(44)]-8-[v1]-10-[v2(25)]-8-|", views: profileImageView, titleLabel, newsMenu)
    addConstraintsWithFormat("H:|-4-[v0]-4-|", views: newsTextView)
    addConstraintsWithFormat("V:|-6-[v0]", views: newsMenu)
    addConstraintsWithFormat("V:|-10-[v0]", views: titleLabel)
    addConstraintsWithFormat("V:|-8-[v0(44)]-4-[v1]", views: profileImageView, newsTextView)
}
}

推荐答案

点击单元格时出现键盘的原因很可能是您实际上点击了UITextView，以防止此行为只是将 newsTextView 对象上的 isUserInteractionEnabled 标志设置为 false.

The reason why the keyboard appears when tapping the cell is most likely that you're in fact tapping on the UITextView, to prevent this behavior just set the isUserInteractionEnabled flag to false on the newsTextView object.

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