如何将数据从单元格传递到另一个单元格 ViewController

Question

@TusharMordiya Please check this image 我在 CollectionView.The 中创建了一个 tableView，视图的内容是 UIImage 和一个 UILabel.I 想要设计的单元格，当我点击一个单元格时，图像和标签必须转到另一个 ViewController.

import UIKit

class ExploreTableViewCell: UITableViewCell, UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout{

   @IBOutlet var collectionView: UICollectionView!

   var namearr = ["images-1", "images-2", "images-3", "images-4", "images-5"]

   override func awakeFromNib() {
      super.awakeFromNib()
    
      collectionView.delegate = self
      collectionView.dataSource = self

   }
   override func setSelected(_ selected: Bool, animated: Bool) {
      super.setSelected(selected, animated: animated)

   }

   func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
      return 10
   }



   func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
      let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath)
      return cell
   }

   func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
      return CGSize(width: 132, height: 134)
   }


   func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    
      let vc = UIStoryboard(name: "DetailViewController", bundle: nil).instantiateViewController(withIdentifier:"DetailViewController") as? DetailViewController
    
      vc?.name = namearr[indexPath.row]
      vc?.img.image = UIImage(named: namearr[indexPath.row])
      //self.navigationController?.pushViewController(vc, animated: true)
    
      // showing error in here and while declaring object of viewcontroller
   }
}

Answer 1

    let vc = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier:"DetailViewController") as? DetailViewController

将故事板名称更改为 Main

Answer 2

请试试这个。

添加获取最顶层视图控制器的功能

extension UIApplication {

     class func topViewController(_ viewController: UIViewController? = UIApplication.shared.connectedScenes
                             .filter({[=10=].activationState == .foregroundActive})
                             .compactMap({[=10=] as? UIWindowScene})
                             .first?.windows
                             .filter({[=10=].isKeyWindow}).first?.rootViewController) -> UIViewController? {
         if let nav = viewController as? UINavigationController {
             return topViewController(nav.visibleViewController)
         }
         if let tab = viewController as? UITabBarController {
             if let selected = tab.selectedViewController {
                 return topViewController(selected)
             }
         }
         if let presented = viewController?.presentedViewController {
             return topViewController(presented)
         }
         return viewController
     }
 }

在您的 didSelectItemAt 方法中使用此代码

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

    let storyBoard = UIStoryboard(name: "Main", bundle: nil)
    if let vc = storyBoard.instantiateViewController(withIdentifier:"DetailViewController") as? DetailViewController {

      vc.name = namearr[indexPath.row]
      print("You tapped the cell\(indexPath) with car name \(namearr[indexPath.row]) ")
      UIApplication.topViewController()?.navigationController?.pushViewController(vc, animated: true)
    }
}

在您的详细信息屏幕中

class DetailViewController: UIViewController {

   @IBOutlet var lbl: UILabel!
   @IBOutlet var img: UIImageView!

   var name = ""


   override func viewDidLoad() {
       super.viewDidLoad()
       lbl.text = name
       img.image = UIImage(named: name)

   }
}

如何将数据从单元格传递到另一个单元格 ViewController

how to pass data from cell to another ViewController

ios

swift

uicollectionview

pushviewcontroller