我的场景，我正在尝试为我的 UITableview 实现搜索选项。在这里，我在 UITableview 中使用自定义单元格。在我的数组数据中，我还添加了部分。如何解决这个问题？
下面是我的代码
class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate, UISearchResultsUpdating, UISearchBarDelegate {
var allDetails:[(String,[String])] = []
var searchResult:[(String,[String])] = []
@IBOutlet weak var tableVIew: UITableView!
@IBOutlet weak var searchBar: UISearchBar!
override func viewDidLoad() {
super.viewDidLoad()
allDetails = [("Vadavalli",["Vadvalli", "Mullai Nagar", "P.N.Pudhur"]),
("R.S.Puram",["Lawly Road", "Kowly Brown", "D.B Road"]),
("Town Hall",["Raja Street", "Gandhipark", "Five corner road", "Main Town Hall"])]
searchResult = allDetails
}
func numberOfSections(in tableView: UITableView) -> Int {
return searchResult.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return searchResult[section].1.count
}
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return searchResult[section].0
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
var cell = tableView.dequeueReusableCell(withIdentifier: "Cell")
if cell == nil{
cell = UITableViewCell(style: .default, reuseIdentifier: "Cell")
}
cell?.textLabel?.text = searchResult[indexPath.section].1[indexPath.row]
return cell!
}
func updateSearchResults(for searchController: UISearchController) { // SEARCH NOT WORKING
if let searchText = searchController.searchBar.text {
searchResult = allDetails.map({ (areaTitle:$0.0,areas:$0.1.filter({ $0.lowercased().contains(searchText) })) }).filter { !$0.1.isEmpty}
//self.tableVIew.reloadData();
}
}
}
最佳答案
您需要做的是实现UISearchBarDelegate方法searchBar(_:textDidChange:)。每次搜索栏文本更改时都会调用此函数。在此方法中，我们可以过滤 allDetails 并重新加载表格 View 。
我们基本上会将 updateSearchResults(for searchController:) 方法中的所有代码移至 searchBar(_:textDidChange:) 委托(delegate)方法。
class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate, UISearchResultsUpdating, UISearchBarDelegate {
var allDetails:[(String,[String])] = []
var searchResult:[(String,[String])] = []
@IBOutlet weak var tableVIew: UITableView!
@IBOutlet weak var searchBar: UISearchBar!
override func viewDidLoad() {
super.viewDidLoad()
//New line of code! Be sure to set your search bar's delegate in viewDidLoad()
searchBar.delegate = self
allDetails = [("Vadavalli",["Vadvalli", "Mullai Nagar", "P.N.Pudhur"]),
("R.S.Puram",["Lawly Road", "Kowly Brown", "D.B Road"]),
("Town Hall",["Raja Street", "Gandhipark", "Five corner road", "Main Town Hall"])]
searchResult = allDetails
}
func numberOfSections(in tableView: UITableView) -> Int {
return searchResult.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return searchResult[section].1.count
}
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return searchResult[section].0
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
var cell = tableView.dequeueReusableCell(withIdentifier: "Cell")
if cell == nil {
cell = UITableViewCell(style: .default, reuseIdentifier: "Cell")
}
cell?.textLabel?.text = searchResult[indexPath.section].1[indexPath.row]
return cell!
}
//Let's get rid of this function
/*
func updateSearchResults(for searchController: UISearchController) {
// SEARCH NOT WORKING
if let searchText = searchController.searchBar.text {
searchResult = allDetails.map({ (areaTitle:$0.0,areas:$0.1.filter({ $0.lowercased().contains(searchText) })) }).filter { !$0.1.isEmpty }
//self.tableVIew.reloadData();
}
}*/
//And implement the UISearchBarDelegate method. This method fires every time that the search bar's text changes
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
searchResult = allDetails.map({ (areaTitle:$0.0,areas:$0.1.filter({ $0.lowercased().contains(searchText) })) }).filter { !$0.1.isEmpty }
self.tableView.reloadData();
}
}
关于ios - Swift UITableview 单元格搜索不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/57344545/