我有一个数组,我试图做一个实时搜索。所以最初我会有未经过滤的数组,当我搜索表格视图时会更新我输入的内容。我已经设置了代表,所以我迷失在为什么它不工作。任何帮助表示赞赏:)为什么搜索不起作用?
@IBOutlet weak var table: UITableView!
var searchController = UISearchController()
var unfilitered = ["cat", "dog", "bat", "tiger"]
var filtered = [String]()
var shouldShowSearchResults = false
override func viewDidLoad() {
super.viewDidLoad()
configureSearchController()
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell: searchcell = table.dequeueReusableCellWithIdentifier("CELL") as! searchcell
if shouldShowSearchResults {
cell.animal.text = filtered[indexPath.row]
}
else {
cell.animal.text = unfiltered[indexPath.row]
}
return cell
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if shouldShowSearchResults {
return filtered.count
}
else {
return unfiltered.count
}
}
func configureSearchController() {
searchController.searchBar.delegate = self
searchController.searchResultsUpdater = self
searchController.dimsBackgroundDuringPresentation = false
searchController = UISearchController(searchResultsController: nil)
searchController.searchBar.placeholder = "Search"
searchController.searchBar.sizeToFit()
table.tableHeaderView = searchController.searchBar
}
func searchBarTextDidBeginEditing(searchBar: UISearchBar) {
shouldShowSearchResults = true
table.reloadData()
}
func searchBarCancelButtonClicked(searchBar: UISearchBar) {
shouldShowSearchResults = false
table.reloadData()
}
func searchBarSearchButtonClicked(searchBar: UISearchBar) {
if !shouldShowSearchResults {
shouldShowSearchResults = true
table.reloadData()
}
searchController.searchBar.resignFirstResponder()
}
func updateSearchResultsForSearchController(searchController: UISearchController) {
let searchString = searchController.searchBar.text
filtered = unfiltered.filter({ (animal) -> Bool in
let animalText: NSString = animal
return (animalText.rangeOfString(searchString!, options: NSStringCompareOptions.CaseInsensitiveSearch).location) != NSNotFound
})
table.reloadData()
}
你确定'filtered'包含你想要的吗?是否调用了updateSearchResultsForSearchController? – Michael
我刚刚添加了几个断点并进行了检查,并且没有调用DidBeginEditing。 – user6032625
听起来像你没有设置'UITextField'的委托。你可以在'updateSearchResultsForSearchController'中设置'shouldShowSearchResults'。 – Michael