将数据从 Collection View Cell 传递到 View Controller

Question

这里是 UICollectionViewCell class:

class ViewCell: UICollectionViewCell {

@IBOutlet weak var lblOutlet: UILabel!
@IBOutlet weak var contentViewOutlet: UIView!

override func awakeFromNib() {
    super.awakeFromNib()
    // Initialization code
}

public var dismiss: (()-> Void)? = nil

@IBAction func btnBack(_ sender: UIButton) {
    self.dismiss?()
}
}

这里是 ViewController Class 的必要代码范围：

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell: ViewCell = // Your code to dequeue cell
    cell.dismiss = { [weak self] in
         //??????
    }
}

例如，假设我必须将此数据 sender.titleLabel?.text 传递给 ViewController。那么如何将此参数（sender.titleLabel?.text）添加到此代码中：

public var dismiss: (()-> Void)? = nil

以及如何在以下范围内的 View Controller 中读取此数据：

cell.dismiss = { [weak self] in
     //Here.
}

Answer 1

你可以试试

public var dismiss: ((String)-> Void)? = nil

和

self.dismiss?(sender.titleLabel!.text)

然后

cell.dismiss = { [weak self] str  in
    //Here.
}

将数据从 Collection View Cell 传递到 View Controller

Passing data from Collection View Cell to View Controller

closures

uiviewcontroller

ios

uicollectionview

swift