ios - 将数据从一个类传递到另一个类

Question

所以我正在尝试为我所在的类(class)编写一个“Mad Lib”主题的应用程序，但我不断收到

EXC_BAD_INSTRUCTION

点击提交按钮时出错。类里其他同学也想不通。请帮助我!

这是我的 firstViewController.swift:

import UIKit

class ViewController: UIViewController
{
    @IBOutlet weak var firstTextField: UITextField! //adjective
    @IBOutlet weak var secondTextField: UITextField! //male name
    @IBOutlet weak var thirdTextField: UITextField! //verb
    @IBOutlet weak var fourthTextField: UITextField! //female name
    @IBOutlet weak var fifthTextField: UITextField! //adjective
    @IBOutlet weak var sixthTextField: UITextField! //athlete
    @IBOutlet weak var seventhTextField: UITextField! //food
    @IBOutlet weak var eighthTextField: UITextField! //restaurant name
    var userInfo = myCustomClass()

    override func viewDidLoad()
    {
        super.viewDidLoad()
    }
    override func prepare(for segue: UIStoryboardSegue, sender: Any?)
    {
        userInfo.adjectiveOne = firstTextField.text!
        userInfo.maleName = secondTextField.text!
        userInfo.verb = thirdTextField.text!
        userInfo.femaleName = fourthTextField.text!
        userInfo.adjectiveTwo = fifthTextField.text!
        userInfo.athlete = sixthTextField.text!
        userInfo.food = seventhTextField.text!
        userInfo.restaurantName = eighthTextField.text!
        let nextView = segue.destination as! secondViewController
        nextView.passedObject = userInfo
    }
}

这是我的 secondViewController.swift:

import UIKit

class secondViewController: UIViewController
{
    var passedObject = myCustomClass()
    @IBOutlet weak var myFinishedProduct: UILabel!

    override func viewDidLoad()
    {
        super.viewDidLoad()
         myFinishedProduct.text = "There was once a \(passedObject.adjectiveOne) man /n \(passedObject.maleName). One day while he was \(passedObject.verb) he saw /n \(passedObject.femaleName), a rather \(passedObject.adjectiveTwo) woman. /n She was also a \(passedObject.athlete), and a very good /n one too. The two went to lunch together at \(passedObject.restaurantName) /n and ate some \(passedObject.food). After /n that they never crossed paths again."
    }
}

最后这是我的 NSOBject，名为“myCustomClass.swift”:

import UIKit

class myCustomClass: NSObject
{
    var adjectiveOne = ""
    var maleName = ""
    var verb = ""
    var femaleName = ""
    var adjectiveTwo = ""
    var athlete = ""
    var food = ""
    var restaurantName = ""
}

基本上，`无论用户在八个文本字段中输入什么，都会在按下提交按钮时存储在 myCustomClass 中。从那里开始，在 secondViewController 中，它将八个输入放入故事中并将其显示在标签上。

感谢任何帮助，谢谢!

编辑:“提交按钮”连接到我的故事书上的 secondViewController，目的是“显示”。

Answer 1

第一个 View Controller

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var txtmobile: UITextField!
    @IBOutlet weak var txtlname: UITextField!
    @IBOutlet weak var txtfname: UITextField!
    var ArrayStudent:[PassData] = []
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    @IBAction func btnclick(_ sender: UIButton)
    {
        let objdata = PassData(fname: txtfname.text!, lname: txtlname.text!, mobile: txtmobile.text!)
        ArrayStudent.append(objdata)
        passdata()

    }
    func passdata()
    {
        let objstory = storyboard?.instantiateViewController(withIdentifier: "SecondViewController") as! SecondViewController
        objstory.Arradata1 = ArrayStudent
        _ = self.navigationController?.pushViewController(objstory, animated: true)
    }

}

第二 View Controller

  import UIKit

    class SecondViewController: UIViewController {

        @IBOutlet weak var lblmobile: UILabel!
        @IBOutlet weak var lbllastname: UILabel!
        @IBOutlet weak var lblname: UILabel!
        var Arradata1:[PassData ] = []
        override func viewDidLoad() {
            super.viewDidLoad()
            lblname.text = Arradata1.first?.StrFirstName
            lbllastname.text = Arradata1.first?.StrLastName
            lblmobile.text = Arradata1.first?.StrMobile

            // Do any additional setup after loading the view.
        }

        override func didReceiveMemoryWarning() {
            super.didReceiveMemoryWarning()
            // Dispose of any resources that can be recreated.
        }

NSObject 类

import UIKit

    class PassData: NSObject
    {
        var StrFirstName:String!
        var StrLastName:String!
        var StrMobile:String!
        init(fname:String , lname:String , mobile:String)

        {
            StrMobile = mobile
            StrFirstName = fname
            StrLastName = lname
        }
    }