每当我在我的应用程序中搜索时，我都会显示正确的结果，但是当我点击我搜索的单元格时，它总是在我进行搜索之前播放表格的第一个索引。我试图在我的didselectcell中使用我的isSearching Bool，但似乎无法让它工作。
import UIKit
import AVFoundation
import AVKit
class FordFlixViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UISearchBarDelegate {
let avPlayerViewController = AVPlayerViewController()
var player: AVPlayer!
var flix = [Courses]()
var currentArray = [Courses]()
let urlString = "http://homevideosdata.192.168.1.19.xip.io/getMoreClasses.php"
@IBOutlet weak var searchBar: UISearchBar!
@IBOutlet weak var homeVidsBtn: UIButton!
@IBOutlet weak var grrr: UITableView!
var isSearching = false
lazy var refreshControl: UIRefreshControl = {
let refreshControl = UIRefreshControl()
refreshControl.tintColor = .black
refreshControl.addTarget(self, action: #selector(requestData), for: .valueChanged)
return refreshControl
}()
override func viewDidLoad() {
super.viewDidLoad()
setUpSearchBar()
requestData()
// Do any additional setup after loading the view.
}
private func setUpSearchBar() {
searchBar.showsScopeBar = true
searchBar.selectedScopeButtonIndex = 0
searchBar.delegate = self
self.grrr.tableHeaderView = searchBar
currentArray = flix
}
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
guard !searchText.isEmpty else {
isSearching = true
currentArray = flix
grrr.reloadData()
return
}
currentArray = flix.filter({ video -> Bool in
video.title.contains(searchText)
})
grrr.reloadData()
}
func searchBar(_ searchBar: UISearchBar, selectedScopeButtonIndexDidChange selectedScope: Int) {
}
let searchController = UISearchController(searchResultsController: nil)
@objc func requestData() {
print("requesting data")
fetchJSON()
let deadline = DispatchTime.now() + .microseconds(700)
DispatchQueue.main.asyncAfter(deadline: deadline) {
self.refreshControl.endRefreshing()
}
}
func fetchJSON() {
guard let url = URL(string: urlString) else { return }
URLSession.shared.dataTask(with: url) { (data, response, err) in
DispatchQueue.main.async {
if let err = err {
print("Failed to get data from URL:", err)
return
} else {
print("Loaded URL")
}
guard let data = data else { return }
do {
let decoder = JSONDecoder()
self.flix = try decoder.decode([Courses].self, from: data)
self.grrr.reloadData()
print(self.flix)
} catch let jsonErr {
print("Failed to decode JSON", jsonErr)
}
}
}.resume()
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return currentArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! FlixTableViewCell
let sweet = currentArray[indexPath.row]
let bgColorView = UIView()
bgColorView.backgroundColor = UIColor.black
cell.selectedBackgroundView = bgColorView
cell.titleLbl.text = sweet.title
if let profileImageUrl = sweet.image {
let url = URL(string: profileImageUrl)
URLSession.shared.dataTask(with: url!, completionHandler: { (data, response, error) in
if error != nil {
print(error)
return
}
DispatchQueue.main.async {
cell.productImage.image = UIImage(data: data!)
}
}).resume()
}
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if isSearching == false {
let selectedCell = flix[indexPath.row].location
let url = selectedCell
// Create an AVPlayer, passing it the HTTP Live Streaming URL.
let player = AVPlayer(url: URL(string: url)!)
// Create a new AVPlayerViewController and pass it a reference to the player.
let controller = AVPlayerViewController()
controller.player = player
// Modally present the player and call the player's play() method when complete.
present(controller, animated: true) {
player.play()
}
} else {
if isSearching == true {
let selectedCellTwo = currentArray[indexPath.row].location
let url = selectedCellTwo
// Create an AVPlayer, passing it the HTTP Live Streaming URL.
let playerTwo = AVPlayer(url: URL(string: url)!)
// Create a new AVPlayerViewController and pass it a reference to the player.
let controller = AVPlayerViewController()
controller.player = playerTwo
// Modally present the player and call the player's play() method when complete.
present(controller, animated: true) {
playerTwo.play()
}
}
}
}
}
答案 0 :(得分：1)
我认为问题在于您正在跟踪您是否正在搜索自己并操纵源数据阵列。
我有一个示例游乐场代码片段，我已用于其他一些答案，它们向您展示如何更有效地执行此操作并具有一些方便的帮助程序功能，以使其更容易。
我认为对你有益的关键部分是：
仅保留搜索结果的单独数组，仅在搜索处于活动状态时使用
var filteredNames = [String]()
确保调整搜索时使用的计数和行数
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if isFiltering() {
return filteredNames.count
} else {
return names.count
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = UITableViewCell() // don't do this, i am for example.
var name: String
if isFiltering() {
name = filteredNames[indexPath.row]
} else {
name = names[indexPath.row]
}
cell.textLabel?.text = name
return cell
}
您可以使用以下帮助程序功能来帮助您。
func searchBarIsEmpty() -> Bool {
// Returns true if the text is empty or nil
return searchController.searchBar.text?.isEmpty ?? true
}
func isFiltering() -> Bool {
return searchController.isActive && !searchBarIsEmpty()
}
完整的UISearchController示例（游乐场）
import UIKit
import PlaygroundSupport
class ViewController: UITableViewController {
let searchController = UISearchController(searchResultsController: nil)
var names = [
"John",
"Terry",
"Martin",
"Steven",
"Michael",
"Thomas",
"Jason",
"Matthew"
]
var filteredNames = [String]()
override func viewDidLoad() {
super.viewDidLoad()
self.title = "Search Example"
searchController.searchResultsUpdater = self
searchController.obscuresBackgroundDuringPresentation = false
searchController.searchBar.placeholder = "Search"
navigationItem.searchController = searchController
definesPresentationContext = true
}
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if isFiltering() {
return filteredNames.count
} else {
return names.count
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = UITableViewCell() // don't do this, i am for example.
var name: String
if isFiltering() {
name = filteredNames[indexPath.row]
} else {
name = names[indexPath.row]
}
cell.textLabel?.text = name
return cell
}
func searchBarIsEmpty() -> Bool {
// Returns true if the text is empty or nil
return searchController.searchBar.text?.isEmpty ?? true
}
func isFiltering() -> Bool {
return searchController.isActive && !searchBarIsEmpty()
}
func filterContentForSearchText(_ searchText: String, scope: String = "All") {
filteredNames = names.filter({( name : String) -> Bool in
return name.lowercased().contains(searchText.lowercased())
})
tableView.reloadData()
}
}
extension ViewController: UISearchResultsUpdating {
func updateSearchResults(for searchController: UISearchController) {
filterContentForSearchText(searchController.searchBar.text!)
}
}
let vc = ViewController()
let nav = UINavigationController()
nav.viewControllers = [vc]
PlaygroundPage.current.liveView = nav