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J'essaie de filtrer un collectionView basé sur les entrées de texte searchBar. Je suis capable de charger et de remplir la collection UISearchResultsUpdating de la classe avec tous les utilisateurs de la DB sur textDidChange et updateSearchResults, mais la collection ne filtre pas en fonction des entrées searchBar (elle montre toujours tous les utilisateurs dans la DB - même sur les entrées de texte) . La partie délicate que je crois est que j'ai un collectionView (classe menuBar) qui délègue à 2 autres collectionsViews. Chaque 1 de ces collectionViews a un différent searchBar et searchController. Voir les captures d'écran ci-jointes et le code pour référence. Merci d'avance!UISearchResultsUpdating pas de filtrage collectionView basé sur le texte searchBar
// searchVC avec les deux searchControllers
class SearchVC: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate, UICollectionViewDelegateFlowLayout, UISearchControllerDelegate, UISearchBarDelegate {
var users = [CurrentTraveler]()
var isSearching = false
var filteredData = [CurrentTraveler]()
var peopleResultsViewController: SearchPeopleResultsVC?
var filtered:[String] = []
var searchActive : Bool = false
var searchPeopleController: UISearchController?
let cellId1 = "cellId1"
let cellId2 = "cellId2"
override func viewDidLoad() {
super.viewDidLoad()
setupSearchBar()
setupCollectionView()
}
func setupSearchBar() {
// sets up searchBar for first collectionView...
}
func setupCollectionView() {
contentCollectionView.dataSource = self
contentCollectionView.delegate = self
contentCollectionView.register(SearchPeopleCollectionView.self, forCellWithReuseIdentifier: cellId2)
}
func scrollToMenuIndex(menuIndex: Int) {
let indexPath = IndexPath(item: menuIndex, section: 0)
contentCollectionView.scrollToItem(at: indexPath, at: UICollectionViewScrollPosition(), animated: true)
if indexPath.item == 1 {
searchPeopleController?.delegate = self
searchPeopleController?.searchBar.delegate = self
peopleResultsViewController = SearchPeopleResultsVC()
searchPeopleController = UISearchController(searchResultsController: peopleResultsViewController)
searchPeopleController?.searchResultsUpdater = peopleResultsViewController
navigationItem.titleView = searchPeopleController?.searchBar
}
if indexPath.item == 0 {
// sets up searchController for first collectionView search
}
}
//menubar collectionView
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 2
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cellId1", for: indexPath)
if indexPath.item == 0 {
// set up first collectionView in menubar...
}
if indexPath.item == 1 {
let usersCell = collectionView.dequeueReusableCell(withReuseIdentifier: "cellId2", for: indexPath) as! SearchPeopleCollectionView
usersCell.searchVC = self
return usersCell
}
return cell
}
var filterString = "" {
didSet {
guard filterString != oldValue else { return }
if filterString.isEmpty {
filteredData = users
}
else {
filteredData = users.filter { ($0.name?.localizedStandardContains(filterString))! }
}
peopleResultsViewController?.collectionView.reloadData()
}
}
func updateSearchResults(for searchPeopleController: UISearchController) {
filterString = searchPeopleController.searchBar.text ?? ""
if filterString.isEmpty {
filteredData = users
}
else {
filteredData = users.filter { ($0.name?.localizedStandardContains(filterString))! }
}
peopleResultsViewController?.collectionView.reloadData()
}
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
// should I do anything here...?
}
}
// Classe UISearchResultsUpdating
class SearchPeopleResultsVC : UIViewController, UISearchResultsUpdating, UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout, UISearchBarDelegate {
let cellId = "cellId"
var users = [CurrentTraveler]()
var filteredData = [CurrentTraveler]()
var isSearching = false
var searchVC: SearchVC?
var peopleResultsViewController: SearchPeopleResultsVC?
var searchController: UISearchController?
var searchPeopleCollectionView: SearchPeopleCollectionView?
var filtered:[String] = []
var searchActive : Bool = false
let searchPeopleController = UISearchController(searchResultsController: nil)
lazy var collectionView: UICollectionView = {
cv.dataSource = self
cv.delegate = self
return cv
}()
override func viewDidLoad() {
collectionView.delegate = self
collectionView.dataSource = self
fetchTravelingUserCell()
}
func fetchTravelingUserCell() {
Database.database().reference().child("users").observe(.childAdded, with: { (snapshot) in
if let dictionary = snapshot.value as? [String: AnyObject] {
let user = CurrentTraveler(dictionary: dictionary)
self.users.append(user)
DispatchQueue.main.async(execute: {
self.collectionView.reloadData()
})
}
}, withCancel: nil)
}
var filterString = "" {
didSet {
// Return if the filter string hasn't changed.
guard filterString != oldValue else { return }
if filterString.isEmpty {
filteredData = users
}
else {
filteredData = users.filter { ($0.name?.localizedStandardContains(filterString))! }
}
collectionView.reloadData()
}
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
if searchPeopleController.isActive && searchPeopleController.searchBar.text != "" {
return filteredData.count
}
return users.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
guard let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cellId", for: indexPath) as? BaseGlobalSearchUser else { fatalError("Expected to display a `DataItemCollectionViewCell`.") }
if searchPeopleController.isActive && searchPeopleController.searchBar.text != "" {
cell.currentTraveler = filteredData[indexPath.item]
} else {
cell.currentTraveler = users[indexPath.item]
}
return cell
}
func updateSearchResults(for searchPeopleController: UISearchController) {
filterString = searchPeopleController.searchBar.text ?? ""
// does print what user types in the searchBar
print(filterString)
if filterString.isEmpty {
filteredData = users
}
else {
filteredData = users.filter { ($0.name?.localizedStandardContains(filterString))! }
}
peopleResultsViewController?.collectionView.reloadData()
}
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
if filterString.isEmpty {
filteredData = users
}
else {
filteredData = users.filter { ($0.name?.localizedStandardContains(filterString))! }
}
self.collectionView.reloadData()
}
}
// données classe modèle
class CurrentTraveler: SafeJsonObject {
var name: String?
var profileImageUrl: String?
var travelingPlace: String?
init(dictionary: [String: AnyObject]) {
super.init()
self.name = dictionary["name"] as? String
self.profileImageUrl = dictionary["profileImageUrl"] as? String
self.travelingPlace = dictionary["users/uid/Places"] as? String
setValuesForKeys(dictionary)
}
}