如何将数据从单元格传递到另一个ViewController

Question

@TusharMordiya请检查这张图片我在视图的CollectionView.The内容中创建了一个UIImage和一个UILabel.I，我想设计一个单元格，当我单击一个单元格时，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

请尝尝这个。

1. 添加函数以获取最顶层视图控制器 扩展UIApplication { class func topViewController(_ viewController: UIViewController？= UIApplication.shared.connectedScenes .filter({$0.0.activationState == .foregroundActive}) .compactMap({$0 as？.filter({$0.isKeyWindow}).first?.rootViewController) -> UIViewController？{如果让nav = viewController？UINavigationController {返回topViewController(nav.visibleViewController) }如果让选项卡= viewController as？UITabBarController {如果让选择= tab.selectedViewController {返回topViewController(选定)}}如果让呈现= viewController?.presentedViewController {返回topViewController(呈现)}返回viewController }
2. 在didSelectItemAt方法中使用此代码 func collectionView(_ collectionView: UICollectionView，didSelectItemAt indexPath: IndexPath) { let storyBoard =UIStoryboard(名称："Main"，bundle: nil)如果让vc =collectionView as？UIApplication.topViewController()?.navigationController?.pushViewController(vc，{ vc.name = namearrindexPath.row print(“您用汽车名(namearrindexPath.row)点击单元格(IndexPath) ") vc.name:true}}
3. 在你的详细屏幕上 类DetailViewController: UIViewController { @IBOutlet lbl: UILabel！@IBOutlet img: UIImageView！变量名称= "“覆盖func viewDidLoad() { super.viewDidLoad() lbl.text = name img.image =UIImage(命名: name) }}

Answer 2

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

将storyBoard名称更改为Main