class SearchMembers: UITableViewController, UISearchControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)
navigationItem.title = NSLocalizedString("MEMBERS", comment: "")
let search = UISearchController(searchResultsController: nil)
self.definesPresentationContext = true
search.searchResultsUpdater = self
search.dimsBackgroundDuringPresentation = false
navigationItem.searchController = search
navigationItem.hidesSearchBarWhenScrolling = false
}
当我从 tableview 单元格执行 segue 时,我可以看到搜索 Controller ,但当我从导航栏项目执行 segue 时,我只看到一个没有搜索栏的空间。然后,我回到上一个 View ,搜索 Controller 栏出现在那里。
如果我再次返回搜索 View ,它会恢复正常行为。
可能的错误?
编辑:
我意识到,如果我从 segue 设置中取消选择“Animates”选项,我在 searchController View 中不会出现空白区域,但当我返回主视图时我仍然会出现空白区域
最佳答案
检查您的 segue 是如何设置的。您是否有一个从 View Controller 连接到 View Controller 的 segue,或者它是从 tableview 连接到另一个 View Controller ,还是您有两个 segue?在这种情况下,你应该使用一个 segue,只是在不同的地方触发它
performSegue(withIdentifier: "yourSegueIdentifier")
看看我快速为你编好的这段代码: 您也可以从我的 github 上试用并与您的进行比较。在这两种情况下,搜索栏都会出现。 https://github.com/verebes1/SearchBarHelp
import UIKit
class MainViewController: UITableViewController {
var items = ["One", "Two", "Three"]
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
//MARK: - Tableview methods
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = items[indexPath.row]
return cell
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return items.count
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
performSegue(withIdentifier: "showMembers", sender: self)
}
//MARK: - Segue setup
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
/* Put any preparation here if needed */
}
//MARK: Navbar Button action
@IBAction func searchBarButtonTapped(_ sender: Any) {
performSegue(withIdentifier: "showMembers", sender: self)
}
}
和第二个viewController:
import UIKit
class SearchMembersController: UITableViewController, UISearchControllerDelegate {
var members = ["First", "Second", "Third", "Fourth"]
override func viewDidLoad() {
super.viewDidLoad()
navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)
navigationItem.title = NSLocalizedString("MEMBERS", comment: "")
let search = UISearchController(searchResultsController: nil)
self.definesPresentationContext = true
//search.searchResultsUpdater = self
search.dimsBackgroundDuringPresentation = false
navigationItem.searchController = search
navigationItem.hidesSearchBarWhenScrolling = false
}
// MARK: - Table view data source
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return members.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = members[indexPath.row]
return cell
}
}
从评论中引用您的代码:
leftButton.addTarget(self, action: #selector(Profile.searchMembers), for: .touchUpInside) self.settingsButton.customView = leftButton
这应该调用
performSegue(withIdentifier:“profileToMembers”,发件人:self)
代替 Profile.searchMembers。可能这是错误的,你可以把它包装在一个 @objc 函数中,比如
@objc func segueToMembers(){
performSegue(withIdentifier: "profileToMembers", sender: self)
}
然后调用它
leftButton.addTarget(self, action: #selector(segueToMembers), for: .touchUpInside) self.settingsButton.customView = leftButton
关于ios - searchController异常行为,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/51001190/