在 UITableView 上执行具有多个状态的 segue 的问题
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【中文标题】在 UITableView 上执行具有多个状态的 segue 的问题【英文标题】：problems with perform segue with multiple states on a UITableView 【发布时间】：2017-08-23 05:13:27 【问题描述】：我有一个 UITableView 有两种状态。一种是用户登录时，另一种是用户注销时。两者都显示不同的细节。如何设置 tableview，以便当用户在 tableview 中选择某些内容时，它会转到指定的视图控制器。谢谢。
import UIKit
import Firebase
class SideTableViewController: UIViewController, UITableViewDataSource, UITableViewDelegate
@IBOutlet weak var loggout: UIButton!
@IBOutlet weak var tableview: UITableView!
@IBOutlet weak var dismissButton: UIButton!
var loggedIn = ["Find Event", "Create Event", "Past Events", "Recently Viewed", "Help", "Setting"]
var loggedOut = ["Log In", "Find Event", "Create Event", "Help"]
override func viewDidLoad()
super.viewDidLoad()
dismissButton.layer.cornerRadius =
dismissButton.frame.size.width / 2
loggout.layer.cornerRadius =
loggout.frame.size.width / 2
if Auth.auth().currentUser != nil
loggout.isHidden = false
print("User Signed In, Showing Relivent Info")
else
loggout.isHidden = true
print("User Not Logged In, Showing Relivent Info")
tableview.reloadData()
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
if Auth.auth().currentUser != nil
// User is signed in.
return loggedIn.count
else
// No user is signed in.
return loggedOut.count
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
let cell = tableView.dequeueReusableCell(withIdentifier: "customcell", for: indexPath as IndexPath)
if Auth.auth().currentUser != nil
// User is signed in.
cell.textLabel?.text = loggedIn[indexPath.item]
return cell
else
// No user is signed in.
cell.textLabel?.text = loggedOut[indexPath.item]
return cell
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
//performSegue(withIdentifier: "tologinfrommain", sender: nil)
【问题讨论】：
您需要在didSelectRowAt中执行适当的segue，而不是使用情节提要中的动作连接器触发segue
【参考方案1】：
为这样的登录和注销状态创建两个静态数组。
@IBOutlet weak var loggout: UIButton!
@IBOutlet weak var tableview: UITableView!
@IBOutlet weak var dismissButton: UIButton!
var loggedIn = ["Find Event", "Create Event", "Past Events", "Recently Viewed", "Help", "Setting"]
var loggedOut = ["Log In", "Find Event", "Create Event", "Help"]
satatic var loggedInSegues = ["FindEventSegue", "CreateEventSegue", "PastEventSegue", "RecentlyViewedSegue", "HelpSegue", "SettingsSegue"]
static var loggedOutSegues = ["LogInSegue", "FindEventSegue", "CreateEventSegue", "HelpSegue"]
override func viewDidLoad()
super.viewDidLoad()
dismissButton.layer.cornerRadius =
dismissButton.frame.size.width / 2
loggout.layer.cornerRadius =
loggout.frame.size.width / 2
if Auth.auth().currentUser != nil
loggout.isHidden = false
print("User Signed In, Showing Relivent Info")
else
loggout.isHidden = true
print("User Not Logged In, Showing Relivent Info")
tableview.reloadData()
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
if Auth.auth().currentUser != nil
// User is signed in.
return loggedIn.count
else
// No user is signed in.
return loggedOut.count
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
let cell = tableView.dequeueReusableCell(withIdentifier: "customcell", for: indexPath as IndexPath)
if Auth.auth().currentUser != nil
// User is signed in.
cell.textLabel?.text = loggedIn[indexPath.item]
return cell
else
// No user is signed in.
cell.textLabel?.text = loggedOut[indexPath.item]
return cell
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
if Auth.auth().currentUser != nil
performSegue(withIdentifier:loggedInSegues[indexPath.row], sender: nil)
else
performSegue(withIdentifier: loggedOutSegues[indexPath.row], sender: nil)
【讨论】：
【参考方案2】：func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
print("Row #\((indexPath as NSIndexPath).row)")
let cell = tableView.cellForRow(at: indexPath) as! popTableViewCell
if Auth.auth().currentUser != nil
if cell.textLabel?.text! == "Find Event"
print(loggedIn[(indexPath as NSIndexPath).row])
performSegue(withIdentifier: "menutofind", sender: nil)
else if cell.textLabel?.text! == "Create Event"
print(loggedIn[(indexPath as NSIndexPath).row])
performSegue(withIdentifier: "menutocreate", sender: nil)
else if cell.textLabel?.text! == "Past Events"
print(loggedIn[(indexPath as NSIndexPath).row])
performSegue(withIdentifier: "menutopast", sender: nil)
else if cell.textLabel?.text! == "Recently Viewed"
print(loggedIn[(indexPath as NSIndexPath).row])
performSegue(withIdentifier: "menutorv", sender: nil)
else if cell.textLabel?.text! == "Help"
print(loggedIn[(indexPath as NSIndexPath).row])
performSegue(withIdentifier: "menutohelp", sender: nil)
else if cell.textLabel?.text! == "Setting"
print(loggedIn[(indexPath as NSIndexPath).row])
performSegue(withIdentifier: "menutosetting", sender: nil)
else
if cell.textLabel?.text! == "Log In"
performSegue(withIdentifier: "menutologin", sender: nil)
else if cell.textLabel?.text! == "Find Event"
performSegue(withIdentifier: "menutofind", sender: nil)
else if cell.textLabel?.text! == "Create Event"
performSegue(withIdentifier: "menutocreate", sender: nil)
else if cell.textLabel?.text! == "Help"
performSegue(withIdentifier: "menutohelp", sender: nil)
这样你就可以对你想要的 VC 执行 Segue。
希望对你有帮助。
【讨论】：
当我选择一些东西时，它总是会把我带到第一个 performSegue。我该如何解决？ 嗨@JameelMaqbool 如果它不是您使用的，您只需删除该行。我也更新了答案。请看一看。 @JameelMaqbool 有效吗？ 请看我下面的回答，看看我有什么代码。我仍然不明白为什么它不起作用。谢谢 @JameelMaqbool 请看一下，因为我更新了经过测试的 Ans 希望它会起作用。根据您的需要以上是关于在 UITableView 上执行具有多个状态的 segue 的问题的主要内容，如果未能解决你的问题，请参考以下文章
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