由于未捕获的异常"NSInvalidArgumentException"而终止应用程序，原因:"Receiver()没有标识为"pizzaSegue"的segue [英] Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Receiver () has no segue with identifier 'pizzaSegue'
问题描述
我是新手，它是快速进行编程的，并且在从表视图单元格按到提供有关该单元格的详细信息的视图控制器时从表视图单元格执行segue时遇到错误.我收到的错误是:
I am new to swift programming and running into errors with performing a segue from a tableview cell when it is pressed to a view controller giving details about that cell. The error I am getting is:
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason:
'Receiver (<DrinkupClient.DrinkListTableViewController: 0x7fec5d431510>)
has no segue with identifier 'pizzaSegue''
我已经尝试了以下操作: 1)尝试重命名情节提要，并确保在项目设置和info.plist文件中设置主情节提要(键为主情节提要文件基本名称").我目前有一个故事板，名为:"Main.storyboard"
I have already tried the following: 1) Tried renaming the storyboard and make sure to set the main storyboard in the project settings and in the info.plist file (Key is 'Main storyboard file base name'). I currently have the storyboard named: "Main.storyboard"
2)尝试清洁产品(产品->清洁)并重建，但这会产生相同的错误
2) Tried doing a clean of the product (Product -> Clean) and rebuild but this gives same error
3)我尝试从模拟器中删除该应用，然后再次运行
3) I have tried deleting the app from the simulator and running it again
4)我仔细检查了一下，在界面生成器中的segue标识符称为"pizzaSegue"，它与我的代码相同.
4) I have double checked and the segue identifier in interface builder is called "pizzaSegue" and it is the same in my code.
import UIKit
import Alamofire
struct Drink {
let id: String
let name: String
let description: String
let amount: Float
let image: UIImage
init(data: [String: Any]) {
self.id = data["id"] as! String
self.name = data["name"] as! String
//self.amount = data["amount"] as! Float
self.amount = ((data["amount"] as? NSNumber)?.floatValue)!
self.description = data["description"] as! String
self.image = data["image"] as! UIImage
}
}
class DrinkTableViewCell: UITableViewCell {
@IBOutlet weak var cellName: UILabel!
@IBOutlet weak var cellAmount: UILabel!
@IBOutlet weak var cellDescription: UILabel!
@IBOutlet weak var cellImage: UIImageView!
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String!) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
class DrinkListTableViewController: UITableViewController {
var drinks: [Drink] = []
override func viewDidLoad() {
super.viewDidLoad()
navigationItem.title = "Drink Selection"
tableView.dataSource = self
tableView.delegate = self
//tableView.register(DrinkTableViewCell.self, forCellReuseIdentifier: "cell")
tableView.register(DrinkTableViewCell.self as AnyClass, forCellReuseIdentifier: "cell")
//tableView.register(UINib(nibName: "DrinkTableViewCell", bundle: Bundle.main), forCellReuseIdentifier: "cell")
//tableView.estimatedRowHeight = 134
//tableView.rowHeight = UITableView.automaticDimension
fetchInventory { drinks in
guard drinks != nil else { return }
self.drinks = drinks!
//print("Data from API call: ", self.drinks)
//self.tableView.reloadData()
// DispatchQueue.main.async { [weak self] in
// self?.tableView.reloadData()
// }
}
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
DispatchQueue.main.async { [weak self] in
self?.tableView.reloadData()
}
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
performSegue(withIdentifier: "pizzaSegue", sender: self.drinks[indexPath.row] as Drink)
//trying another method below?
//self.navigationController?.pushViewController(UIViewController() as! PizzaViewController, animated: true)
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "pizzaSegue" {
guard let vc = segue.destination as? PizzaViewController else { return }
vc.pizza = sender as? Pizza
}
}
private func fetchInventory(completion: @escaping ([Drink]?) -> Void) {
Alamofire.request("http://127.0.0.1:4000/inventory", method: .get)
.validate()
.responseJSON { response in
guard response.result.isSuccess else { return completion(nil) }
guard let rawInventory = response.result.value as? [[String: Any]?] else { return completion(nil) }
let inventory = rawInventory.compactMap { pizzaDict -> Drink? in
var data = pizzaDict!
data["image"] = UIImage(named: pizzaDict!["image"] as! String)
//print("Printing each item: ", Drink(data: data))
//printing all inventory successful
return Drink(data: data)
}
completion(inventory)
}
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
print("ROWS: ", drinks.count)
return drinks.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
//let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! DrinkTableViewCell
//let cell = UITableViewCell(style: UITableViewCell.CellStyle.subtitle, reuseIdentifier: "cell")
let cell:DrinkTableViewCell = self.tableView.dequeueReusableCell(withIdentifier: "cell") as! DrinkTableViewCell
//cell.cellName?.text = drinks[indexPath.row].name
//cell.cellAmount?.text = String(drinks[indexPath.row].amount)
//cell.cellDescription?.text = drinks[indexPath.row].description
//cell.cellImage?.image = drinks[indexPath.row].image
cell.imageView?.image = drinks[indexPath.row].image
cell.textLabel?.text = drinks[indexPath.row].name
cell.detailTextLabel?.text = drinks[indexPath.row].description
//print(cell.textLabel?.text)
//print(cell.detailTextLabel?.text)
print(cell.cellName?.text as Any)
//print(cell.cellImage?.image)
return cell
}
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 100.0
}
}
推荐答案
来自您的评论:
.我在tabBarController中有一个按钮，该按钮提供了tableView，并且工作正常.
. I have a button in the tabBarController that presents the tableView and this is working fine.
let drinkController = DrinkListTableViewController()
let drinkNavigationController = UINavigationController(rootViewController: drinkController)
self.present(drinkNavigationController, animated: true, completion: nil)
不，它不能正常工作.这是问题所在.
No it isn’t working fine. It is the problem.
基本上，这与我在此处的回答相同:
Basically this is the same situation as in my answer here:
https://stackoverflow.com/a/40077530/341994
说DrinkListTableViewController()，您将获得一个无用的实例.您需要做的是与 storyboard 对话，并要求 it 实例化所需的视图控制器(通过标识符)，以便从情节提要中获取实例，有segue.
You are obtaining a useless instance when you say DrinkListTableViewController(). What you need to do is talk to the storyboard and ask it to instantiate the desired view controller (by identifier) so that you get the instance from the storyboard, the one that has the segue.
这篇关于由于未捕获的异常"NSInvalidArgumentException"而终止应用程序，原因:"Receiver()没有标识为"pizzaSegue"的segue的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
