在我的视图集合中，我添加了一个搜索栏，它过滤了单元格，但是当我单击单元格时，它自己的路径没有改变，路径保持与搜索之前相同。
当我点击单元格时，它会把你带到一个特定的页面。请原谅我的代码很差，但我刚刚开始学习swift。我的问题可能非常简单和明显，所以请告诉我
这是我的代码，我使用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 retrieving 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]
}
}
}//extension
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()
}
}
}
}//extension
如果您选择UICollectionView中的第一个可见单元格，则indexPath将始终是相同的。您必须检查底层数据集以获得差异。
还有:在Swift中，类和结构的第一个字母都是大写的。
你必须做这样的事情来实现你想要的:
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
}