点击按钮（位于 UICollectionViewController 中）时如何激活共享扩展（UIActivityViewController）？

Question

我正在尝试向其中一个 UICollectionViewCell 添加一些按钮或标签，但似乎无法在点击共享按钮时激活 UIActivityViewController。

这是我的代码：

class VerticalCollectionViewCell: UICollectionViewCell {




 override init(frame: CGRect) {

    super.init(frame: frame)


    containerView.addSubview(shareButton)
    shareButton.bottomAnchor.constraint(equalTo: containerView.bottomAnchor, constant: -16).isActive = true
    shareButton.rightAnchor.constraint(equalTo: favoriteButton.leftAnchor, constant: -16).isActive = true
    shareButton.widthAnchor.constraint(equalToConstant: 24).isActive = true
    shareButton.heightAnchor.constraint(equalToConstant: 24).isActive = true
    shareButton.addTarget(self, action: #selector(handleShareButton), for: .touchUpInside)

}

  @objc func handleShareButton(sender: UIButton) {
        let shareText = NSLocalizedString("I found something interesting you may want to take a look at.", comment: "share")
        let shareImage = #imageLiteral(resourceName: "Bear")
        let activityViewController : UIActivityViewController = UIActivityViewController(activityItems: [shareText, shareImage as Any], applicationActivities: nil)
        activityViewController.popoverPresentationController?.sourceView = self.view
        self.present(activityViewController, animated: true, completion: nil)
    }



}

错误是： Value of type 'VerticalCollectionViewCell' has no member 'view' 和 Value of type 'VerticalCollectionViewCell' has no member 'present'.

我知道 presentViewController 是一个 UIViewController 方法，UITableViewCell 没有名为 presentViewController 的方法，UITableViewCell 不应该处理任何业务逻辑。它应该在视图控制器中实现。

但我不知道如何解决这个问题。

Answer 1

您可以做的是定义一个单元格协议，您的表格视图可以遵守该协议。当点击 collectionView 上的共享按钮时，调用此委托方法，传入相关信息，例如单元格标签或该 collectionView 单元格的模型。使用该信息，您可以从 viewController.

中显示 ActivityController

Answer 2

你这样调用do

class Cell: UITableViewCell {
    @IBOutlet let shareButton: UIButton!
}
class VC: UIViewController, UITableViewDataSource {
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell") as? Cell {
            cell?.shareButton.addTarget(self, action: #selector(VC.shareButtonPressed(_:)), for: .touchUpInside)
        }
    }
    func shareButtonPressed(_ button: UIButton) {
        //code here

    }
}

点击按钮（位于 UICollectionViewController 中）时如何激活共享扩展（UIActivityViewController）？

How to activate share extension (UIActivityViewController) when a button tapped (which is in UICollectionViewController)?

uicollectionview

uicollectionviewcell

uiactivityviewcontroller

swift