我的目标是使工作的php搜索文件中的搜索结果显示在表格视图中。搜索视图控制器中没有显示任何错误,但是肯定缺少某些内容,我无法弄清楚。我也有另一个.swift文件。我不确定问题出在哪里。有什么建议吗?
let url = URL(string: "http://127.0.0.1/musicfiles/search.php")
var filteredData = [String]()
var isSearching = false
var search: [Search] = []
var filePath = "http://127.0.0.1/musicfiles/"
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
searchBar.delegate = self
searchBar.returnKeyType = UIReturnKeyType.done
let task = URLSession.shared.dataTask(with: url!) { (data, snapshot, error) in
let retrievedList = String(data: data!, encoding: String.Encoding.utf8)
print(retrievedList!)
self.parseSongs(data: retrievedList!)
}
task.resume()
}
func parseSongs (data: String) {
if (data.contains("*")) {
let dataArray = (data as String).split(separator: "*").map(String.init)
for item in dataArray {
let itemData = item.split(separator: ",").map(String.init)
let searchSong = Search(songname: itemData[0])
search.append(searchSong!)
for s in search {
print(s.searchSongName())
}
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
}
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if isSearching {
return filteredData.count
}
return filteredData.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as? DataCell {
let text: String!
if isSearching {
text = filteredData[indexPath.row]
} else {
text = filteredData[indexPath.row]
}
cell.congigureCell(text: text)
return cell
} else {
return UITableViewCell()
}
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let searchSong = search[indexPath.row].searchSongName()
let fileURLString = "\(filePath)\(searchSong)"
print(fileURLString)
}
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
if searchBar.text == nil || searchBar.text == "" {
isSearching = false
view.endEditing(true)
tableView.reloadData()
} else {
isSearching = true
tableView.reloadData()
}
} }
答案 0 :(得分:2)
首先,您必须过滤textDidChange
中的数据
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
if searchText.isEmpty {
isSearching = false
view.endEditing(true)
filteredData.removeAll()
} else {
isSearching = true
filteredData = search.filter{ $0.songname.range(of: searchText, options: .caseInsensitive) != nil }
}
tableView.reloadData()
}
然后,您必须更改所有数据源方法以显示search
或filteredData
数组。
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return isSearching : search.count ? filteredData.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! DataCell
let song = isSearching ? search[indexPath.row] : filteredData[indexPath.row]
cell.congigureCell(text: song.songname)
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let searchSong = isSearching ? search[indexPath.row] : filteredData[indexPath.row]
let fileURLString = "\(filePath)\(searchSong.songname)"
print(fileURLString)
}
注意:
if let cell
中的可选绑定(cellForRow
)是没有意义的。如果存在设计错误,则代码将崩溃,并且可以立即解决此问题。