Swift - UICollectionViewCell 中的 UIButton 不可点击

Question

我目前有一个 UICollectionViewController 来显示我所有的新闻文章。对于我的新闻项目，我创建了一个右上角带有小按钮的自定义 UICollectionViewCell。

问题是它仅在我将 feedCell 设置为 isUserInteractionEnabled = true 时才起作用。我只希望 newsMenu 按钮可以点击，而不是整个单元格都可以选择。

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)
}
}

Answer 1

点击单元格时键盘出现的原因很可能是您实际上点击了 UITextView，要防止这种行为，只需设置 isUserInteractionEnabled 标志在 newsTextView 对象上设置为 false。