在 tableview 中执行 segue collection view

Question

我有嵌入到 UITableView 中的 UICollectionview。现在我想在用户点击一个单元格

时执行一个新的 ViewController 的 segue

导入 UIKit

class productsTableViewCell：UITableViewCell、UICollectionViewDataSource、UICollectionViewDelegate、UICollectionViewDelegateFlowLayout {

var imgArr = [
    UIImage(named: "1000008614"),
    UIImage(named: "1000008621"),
    UIImage(named: "1000008629")
]

var imgName = [
    "iPhone XS",
    "iPhone XS Max",
    "iPhone 11"
]

var imgPrice = [
    "15,000,000 T",
    "17,000,000 T",
    "21,000,000 T"
]

@IBOutlet weak var btnShowAll: UIButton!
@IBOutlet weak var lblSectionName: UILabel!
@IBOutlet weak var ProductsCollectionVIew: UICollectionView!
override func awakeFromNib() {
    super.awakeFromNib()

    ProductsCollectionVIew.delegate = self
    ProductsCollectionVIew.dataSource = self
    ProductsCollectionVIew.reloadData()
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return imgArr.count
}

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Products", for: indexPath) as! ProductCollectionViewCell

    cell.imgProduct.image = imgArr[indexPath.row]
    cell.lblProductName.text = imgName[indexPath.row]
    cell.lblPrice.text = imgPrice[indexPath.row]
    return cell
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
    return 0.0
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
    return 0.0
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
    return UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
}

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    //here I can't use self.performSegue(withIdentifier: "identifier", sender: self)
}
@IBAction func btnShowAllAction(_ sender: Any) {

}

}

我无法执行 segue 到新的视图控制器请帮我。谢谢

Answer 1

您不能在 UITableViewCell 子类中使用 performSegue()，因为此方法仅在 UIViewController 中可用。

您的问题有一个简单的解决方案 - 您可以将 "callback" 添加到单元格并在视图控制器中填充此回调。

你的手机：

class ProductsTableViewCell: UITableViewCell {
    var didSelectItemAction: ((IndexPath) -> Void)?

    //...

    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        didSelectItemAction?(indexPath)
    }
}

视图控制器中的代码：

class ViewController: UITableViewController {
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "identifier", for: indexPath)
        guard let productsCell = cell as? ProductsTableViewCell else {
            return cell
        }

        productsCell.didSelectItemAction = { [weak self] indexPath in
            self?.performSegue(withIdentifier: "yourID", sender: self)
        }

        return productsCell
    }

}

Answer 2

如果您从上面给出的代码中收到警告，您可以简单地这样做：

let Tablecell = MyTableview.dequeueReusableCell(withIdentifier: MyCellID, for: indexPath) as! MyTableViewCell

        Tablecell.configureCell() // this is function which setups my collection view

        let collectionCell = Tablecell

        collectionCell.didSelectItemAction = { [weak self] indexPath in

                self?.performSegue(withIdentifier: "SegueID", sender: self)
            }

            return collectionCell
        }

在 tableview 中执行 segue collection view

perform segue collection view inside a tableview

xcode

uitableview

segue

uicollectionview

swift