in my view collection i added a search bar and it filtered the cells but when i click the cell it self the path didn't change the path remain the same as it was before the search .

when i click the cell it should take you to a specific page excuse my poor code but i just started to learn swift. and my problem might be super easy and obvious so bare with me please

this is my code i'm using swift storyboard

import UIKit
import Firebase
import FirebaseStorage

class resViewViewController: UIViewController, UISearchBarDelegate, UISearchDisplayDelegate
{
    
    @IBOutlet weak var background: UIImageView!
    @IBOutlet weak var icon: UIImageView!
    
    @IBOutlet weak var resL: UILabel!
    @IBOutlet weak var collection: UICollectionView!
    
    var resources:[resFile] = []
    let db = Firestore.firestore()
    //dummy data
    
    @IBOutlet weak var searchBar: UISearchBar!
    var searchActive : Bool = false
    var filtered:[resFile] = []

    
    override func viewDidLoad() {
        super.viewDidLoad()
        let nipCell = UINib(nibName: "resourceCellCollectionViewCell", bundle: nil)
     
        //
        collection.delegate = self
        collection.dataSource = self
        searchBar.delegate = self
        ///
        
        collection.register(nipCell, forCellWithReuseIdentifier: "cell")
        
        loadResources()
    }
    
    func loadResources(){
        db.collection("Resources").getDocuments { querySnapshot, error in
            if let e = error {
                print("There was an issue retreving data from fireStore. \(e)")
            }else {
                if let snapshotDocuments = querySnapshot?.documents{
                    for doc in snapshotDocuments{
                        
                        let data = doc.data()
                        if let rName = data["ResName"] as? String, let aName  = data["authorName"] as? String, let pName = data["pubName"] as? String, let desc = data["desc"] as? String, let urlName = data["url"] as? String {
                            let newRes = resFile(name: rName, author: aName, publisher: pName, desc: desc, urlString: urlName)
                            self.resources.append(newRes)
                         
                            DispatchQueue.main.async {
                                self.collection.reloadData()
                            }
                        }
                    }
//                    DispatchQueue.main.async {
//                        self.collection.reloadData()
//                    }
                }
            }
        }
    }//end loadResources
    //search
    func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
        searchActive = true;
    }

    func searchBarTextDidEndEditing(_ searchBar: UISearchBar) {
        searchActive = false;
        self.searchBar.endEditing(true)
    }

    func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
        searchActive = false;
        self.searchBar.endEditing(true)
    }

    func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
        searchActive = false;
        self.searchBar.endEditing(true)
    }
    func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {

        filtered = resources.filter { $0.name.localizedCaseInsensitiveContains(searchText) }
        if(filtered.count == 0){
            searchActive = false;
        } else {
            searchActive = true;
        }
        self.collection.reloadData()
    }
}//end of class




extension resViewViewController:UICollectionViewDelegateFlowLayout, UICollectionViewDataSource {
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        let w = (UIScreen.main.bounds.size.width - 110)/2
        return CGSize(width: w, height: 160) //154
    }//end size
    
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        if(searchActive) {
               return filtered.count
           } else {
        return resources.count
           }
    }//end count
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
            
        let cell = collection.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! resourceCellCollectionViewCell
        
        if(searchActive) {
            cell.name.text = filtered[indexPath.row].name
        } else {
        cell.name.text = resources[indexPath.row].name
        }
        return cell
    }//end cell
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        self.performSegue(withIdentifier: "si_resourceListToDetail", sender: indexPath)
    }//end
}//extention

extension resViewViewController {
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "si_viewResToPost", let vc = segue.destination as? resPostViewController {
            vc.delegate = self
        } else if segue.identifier == "si_resourceListToDetail",
                  let vc = segue.destination as? detailedResViewController, let indexPath = sender as? IndexPath {
            vc.resource = resources[indexPath.row]
        }
    }
}//extention

extension resViewViewController: resPostViewControllerDelegate {
    func resPost(_ vc: resPostViewController, resource: resFile?, added: Bool){
        vc.dismiss(animated: true) {
            if added, let r = resource {
                self.resources.append(r)
                self.collection.reloadData()
            }
        }
    }
}//extention

CodePudding user response：

The indexPath will always be the same if you select the first visible cell in the UICollectionView. You must check the underlying data set to get the difference..

Also: In Swift it's convention to have capital first letter of classes and structs.

You must do something like this to achieve what you want:

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    let item: ResFile
    if searchActive {
        item = filtered[indexPath.item]
    } else {
        item = resources[indexPath.item]
    }

    performSegue(withIdentifier: "si_resourceListToDetail", sender: item)
}

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    guard let item = sender as? ResFile else { return }
    // Send item to destination view controller
}