我试图从swift 3中的tableview控制器中的搜索结果中删除,但是当我使用self.performSegue(withIdentifier: "teacherDetail", sender: self)
时,它似乎在选择单元格时挂起。如果我点击第一个单元格,它将显示为选中的灰色,然后除非我选择另一个单元格,否则将不会执行任何操作。然后,它将使用来自第一个单元格的信息将segue预先形成到详细视图控制器。
import UIKit
var name = ""
class DirectoryTC: UITableViewController, UISearchResultsUpdating {
var teachers = ["Mr. Delano", "Mr. Antani", "Mr. Botelho", "Mr. Braga"]
var filteredTeachers = [String]()
var searchController: UISearchController!
var resultsController = UITableViewController()
override func viewDidLoad() {
super.viewDidLoad()
self.resultsController.tableView.dataSource = self
self.resultsController.tableView.delegate = self
self.searchController = UISearchController(searchResultsController: self.resultsController)
self.tableView.tableHeaderView = self.searchController.searchBar
self.searchController.searchResultsUpdater = self
definesPresentationContext = true
}
func updateSearchResults(for searchController: UISearchController) {
self.filteredTeachers = self.teachers.filter{ (teacher:String) -> Bool in
if teacher.lowercased().contains(self.searchController.searchBar.text!.lowercased())
{
return true
}else
{
return false
}
}
self.resultsController.tableView.reloadData()
}
// MARK: - Table view data source
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if tableView == self.tableView
{
return self.teachers.count
}else
{
return self.filteredTeachers.count
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = UITableViewCell()
if tableView == self.tableView
{
cell.textLabel?.text = self.teachers[indexPath.row]
}else
{
cell.textLabel?.text = self.filteredTeachers[indexPath.row]
}
return cell
}
override func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
DispatchQueue.main.async(){
if tableView == self.tableView
{
name = self.teachers[indexPath.row]
}else
{
name = self.filteredTeachers[indexPath.row]
}
self.performSegue(withIdentifier: "teacherDetail", sender: self)
}
}
}
这是我想要查看的视图控制器的swift文件。
import UIKit
class DirectoryDetailVC: UIViewController{
@IBOutlet weak var test: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
test.text = name
}
}
答案 0 :(得分:0)
确保你的故事板视图控制器名称是teacherDetail - 使用
DispatchQueue.main.async { self.performSegue(withIdentifier: "teacherDetail", sender: self)}
而不是
self.performSegue(withIdentifier: "teacherDetail", sender: self)
答案 1 :(得分:0)
>>> from scrapy.selector import Selector
>>> selector = Selector(text=page)
>>> selector.xpath('.//table[1]/tr[2]/td[5]/text()').extract()[0]
'41-23'
更改为didDeselectRowAtlectRowAt
”