Swift - UICollectionViewCell中的UIButton不可点击

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，我用右上角的一个小按钮创建了一个自定义的UICollectionViewCell。Swift - UICollectionViewCell中的UIButton不可点击

问题是只有当我将我的feedCell设置为isUserInteractionEnabled = true时，它才工作。我只想要newsMenu按钮是可点击的，而不是可以选择整个单元格。

我该如何做到这一点？

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) 
} 
}

来源

2017-02-28 Dennis van Mazijk

你为什么不希望该全单元是可点击？它是突出显示的事实吗？ – Ocunidee

它目前没有突出显示，但如果将交互设置为true，它也会自动加载键盘。我可以关闭它吗？ –

@DennisvanMazijk检查我的答案，让我知道它是否适合你。 – javimuu

敲击单元格时出现键盘的原因很可能是您实际上正在攻击01，为了防止此行为，只需在newsTextView对象上将isUserInteractionEnabled标志设置为false即可。

来源

2017-02-28 10:01:12 Laffen

一个非常简单的修复，但它工作:) –

你的代码更改为：

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.sourceController = self // assign controller 

     return feedCell 
    } 

    func imageTapped() // remove (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) 
    }

而且你自定义单元格：

class FeedCell: UICollectionViewCell { 

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

     setupViews() 
    } 

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

    weak var sourceController: YourController? // declare new variable 

    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 
    }() 

    lazy var newsMenu: UIButton = { // change `let` to `lazy var` 
     let newsMenu = UIButton() 
     newsMenu.isUserInteractionEnabled = true 
     newsMenu.setImage(UIImage(named: "news_menuitem"), for: UIControlState()) 
     newsMenu.addTarget(self, action: #selector(actionTap), for: .touchUpInside) // add target to button 
     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) 
    } 

    func actionTap() { // handle function 
     sourceController?. imageTapped() 
    } 


}

来源

2017-02-28 09:53:08 javimuu

imageTapped有PARAM，所以你必须addtarget：

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

来源

2017-02-28 10:25:36

Swift - UICollectionViewCell中的UIButton不可点击

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