我正在尝试跟进有关 CodePath 的本教程:访问 https://guides.codepath.com/ios/Search-Bar-Guide#cancelling-out-of-search-and-hiding-keyboard
我创建了一个 SearchViewController 来进行搜索,但是 didSelectRowAt 不起作用
下面是我的代码:
class SearchViewController: UIViewController, UITableViewDataSource, UISearchBarDelegate {
@IBOutlet weak var tableView: UITableView!
@IBOutlet weak var searchBar: UISearchBar!
let data = ["New York, NY", "Los Angeles, CA", "Chicago, IL", "Houston, TX",
"Philadelphia, PA", "Phoenix, AZ", "San Diego, CA", "San Antonio, TX",
"Dallas, TX", "Detroit, MI", "San Jose, CA", "Indianapolis, IN",
"Jacksonville, FL", "San Francisco, CA", "Columbus, OH", "Austin, TX",
"Memphis, TN", "Baltimore, MD", "Charlotte, ND", "Fort Worth, TX"]
var filteredData: [String]!
override func viewDidLoad() {
super.viewDidLoad()
tableView.dataSource = self
tableView.allowsSelection = true
searchBar.delegate = self
filteredData = data
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "TableCell", for: indexPath) as UITableViewCell
cell.textLabel?.text = filteredData[indexPath.row]
return cell
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return filteredData.count
}
// THIS IS NOT WORKING
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print("didSelectRowAt(\(indexPath)")
}
// This method updates filteredData based on the text in the Search Box
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
// When there is no text, filteredData is the same as the original data
// When user has entered text into the search box
// Use the filter method to iterate over all items in the data array
// For each item, return true if the item should be included and false if the
// item should NOT be included
filteredData = searchText.isEmpty ? data : data!.filter { (item: String) -> Bool in
// If dataItem matches the searchText, return true to include it
return item.range(of: searchText, options: .caseInsensitive, range: nil, locale: nil) != nil
}
tableView.reloadData()
}
func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
self.searchBar.showsCancelButton = true
}
func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
searchBar.showsCancelButton = false
searchBar.text = ""
searchBar.resignFirstResponder()
}
}
我还需要做些什么吗?本教程没有显示我遗漏的任何其他代码。
最佳答案
您应该将 UITableViewDelegate
委托(delegate)给您的类,并在您的 viewDidLoad
函数中使用 tableView.delegate = self
。这将有助于触发 UITableViewController
的委托(delegate)函数。
关于UITableView 上的 iOS didSelectRowAt 行不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56278966/