Когда я выполняю поиск в строке поиска, это дает мне соответствующие результаты, но когда я нажимаю снаружи, чтобы выбрать свой вариант, заполнитель панели поиска становится равным нулю, и доступна только опция поиска. Чтобы получить все параметры, я должен снова открыть панель поиска и нажать «Отмена», чтобы перезагрузить просмотр таблицы, чтобы показать все параметры.
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Ввод текста в строке поиска
После нажатия на экран
import UIKit
class ViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource,UISearchControllerDelegate,UISearchBarDelegate {
let locationNames = ["Python", "C#", "Machine Learning"]
let locationImages = [UIImage(named: "hawaiiResort"), UIImage(named: "mountainExpedition"), UIImage(named: "scubaDiving")]
let locationDescription = ["Beautiful resort off the coast of Hawaii", "Exhilarating mountainous expedition through Yosemite National Park", "Awesome Scuba Diving adventure in the Gulf of Mexico"]
let searchController = UISearchController(searchResultsController: nil)
@IBOutlet weak var collectionView: UICollectionView!
var searchResult = [String]()
var searching = false
override func viewDidLoad() {
navigationItem.title = "Courses"
navigationController?.navigationBar.prefersLargeTitles = true
self.navigationItem.largeTitleDisplayMode = .always
searchController.searchResultsUpdater = self
searchController.searchBar.delegate = self
navigationItem.searchController = searchController
definesPresentationContext = true
currentPage = 0
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
if(searching){
return searchResult.count
}
else{
return 3
}
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! CollectionViewCell
if(searching)
{
cell.locationName.text = searchResult[indexPath.row]
let people = locationNames.index{$0 == String(searchResult[indexPath.row])}
cell.locationImage.image = locationImages[people ?? 0]
cell.locationDescription.text = locationDescription[people ?? 0]
}
else
{
cell.locationImage.image = locationImages[indexPath.row]
cell.locationName.text = locationNames[indexPath.row]
cell.locationDescription.text = locationDescription[indexPath.row]
}
cell.contentView.layer.cornerRadius = 4.0
cell.contentView.layer.borderWidth = 1.0
cell.contentView.layer.borderColor = UIColor.clear.cgColor
cell.contentView.layer.masksToBounds = false
cell.layer.shadowColor = UIColor.gray.cgColor
cell.layer.shadowOffset = CGSize(width: 0, height: 1.0)
cell.layer.shadowRadius = 4.0
cell.layer.shadowOpacity = 1.0
cell.layer.masksToBounds = false
cell.layer.shadowPath = UIBezierPath(roundedRect: cell.bounds, cornerRadius: cell.contentView.layer.cornerRadius).cgPath
return cell
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
let vc = self.storyboard?.instantiateViewController(withIdentifier: "ContentViewController") as! ContentViewController
vc.selectedCourse = locationNames[indexPath.row]
self.navigationController?.pushViewController(vc, animated: true)
}
}
extension ViewController: UISearchResultsUpdating{
func updateSearchResults(for searchController: UISearchController) {
guard let searchText = searchController.searchBar.text else { return }
searchResult = locationNames.filter({$0.prefix(searchText.count) == searchText})
searching = true
collectionView.reloadData()
}
// func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
// searchResult = locationNames.filter({$0.prefix(searchText.count) == searchText})
// searching = true
// collectionView.reloadData()
// }
func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
NSLog("%@",searchBar.text ?? "");
}
func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
searching = false
searchBar.text = ""
collectionView.reloadData()
}
}
Я новичок в Swift.