Question

我正在做QR码扫描仪测验应用，用户必须从10个问题中获得10分。在用户获得第一个qn之后，分数将加1并且它将恢复到qr扫描仪页面，在那里他们必须扫描QR代码以获得下一个qn。问题是分数数据的传递。有没有办法没有segue？

这是我的qn1controller

import UIKit

class Quiz1Controller: UIViewController {

    @IBOutlet var question: UILabel!
    @IBOutlet var button1: UIButton!
    @IBOutlet var button2: UIButton!
    @IBOutlet var button3: UIButton!
    @IBOutlet var button4: UIButton!
    @IBOutlet var LabelEnd: UILabel!
    @IBOutlet var scorelabel: UILabel!
    var score = Int()
    var CorrectAnswer = String()

    override func viewDidLoad() {
        super.viewDidLoad()

        RandomQuestions()
    }

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

    func RandomQuestions(){

        var RandomNumber = arc4random() % 1
        RandomNumber += 1

        switch(RandomNumber){
        case 1:
            question.text = "Who is the current Deputy Chairman of People's Association?"
            button1.setTitle("Lee Hsien Loong", for: .normal)
            button2.setTitle("Chan Chun Sing", for: .normal)
            button3.setTitle("Goh Chok Tong", for: .normal)
            button4.setTitle("Goh Khen Swee", for: .normal)
            CorrectAnswer = "2"
            Hide()
            break
        default:
            break
        }
    }

    func Hide(){
        LabelEnd.isHidden = true
    }
    func UnHide(){
        LabelEnd.isHidden = false
    }

    @IBAction func Button1(_ sender: Any) {
        UnHide()

        if (CorrectAnswer == "1"){
            self.performSegue(withIdentifier: "correct", sender: self)
        }
        else {
            LabelEnd.text = "Incorrect Answer! Try again"
        }
    }

    @IBAction func Button2(_ sender: Any) {
        UnHide()

        if (CorrectAnswer == "2"){
            score = score + 1
            scorelabel.text = "Score:\(score)"
            self.performSegue(withIdentifier: "correct", sender: self)            
        }
        else {
            LabelEnd.text = "Incorrect Answer! Try again"
        }
    }

    @IBAction func Button3(_ sender: Any) {
        UnHide()

        if (CorrectAnswer == "3"){
            self.performSegue(withIdentifier: "correct", sender: self)
        }
        else {
            LabelEnd.text = "Incorrect Answer! Try again"
        }
    }

    @IBAction func Button4(_ sender: Any) {
        UnHide()

        if (CorrectAnswer == "4"){
            self.performSegue(withIdentifier: "correct", sender: self)
        }
        else {
            LabelEnd.text = "Incorrect Answer! Try again"
        }
    }

}

这是我的qn2控制器

import UIKit

class Quiz2Controller: UIViewController {

    @IBOutlet var question: UILabel!
    @IBOutlet var button1: UIButton!
    @IBOutlet var button2: UIButton!
    @IBOutlet var button3: UIButton!
    @IBOutlet var button4: UIButton!
    @IBOutlet var LabelEnd: UILabel!
    @IBOutlet var scorelabel: UILabel!
    var score = Int()
    var CorrectAnswer = String()

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        RandomQuestions()
    }

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

    func RandomQuestions(){

        var RandomNumber = arc4random() % 1
        RandomNumber += 1

        switch(RandomNumber){
        case 1:
            question.text = "Who is the founder of People's Association?"
            button1.setTitle("Lee Hsien Loong", for: .normal)
            button2.setTitle("Lee Kuan Yew", for: .normal)
            button3.setTitle("Goh Chok Tong", for: .normal)
            button4.setTitle("Goh Khen Swee", for: .normal)
            CorrectAnswer = "1"
            Hide()
            break
        default:
            break
        }
    }

    func Hide(){
        LabelEnd.isHidden = true
    }
    func UnHide(){
        LabelEnd.isHidden = false
    }

    @IBAction func Button1(_ sender: Any) {
        UnHide()

        if (CorrectAnswer == "1"){
            score = score + 1
            scorelabel.text = "Score:\(score)"
            self.performSegue(withIdentifier: "correct", sender: self)
        }
        else {
            LabelEnd.text = "Incorrect Answer! Try again"
        }
    }

    @IBAction func Button2(_ sender: Any) {
        UnHide()

        if (CorrectAnswer == "2"){
            self.performSegue(withIdentifier: "correct", sender: self)
        }
        else {
            LabelEnd.text = "Incorrect Answer! Try again"
        }
    }

    @IBAction func Button3(_ sender: Any) {
        UnHide()

        if (CorrectAnswer == "3"){
            self.performSegue(withIdentifier: "correct", sender: self)
        }
        else {
            LabelEnd.text = "Incorrect Answer! Try again"
        }
    }

    @IBAction func Button4(_ sender: Any) {
        UnHide()

        if (CorrectAnswer == "4"){
            self.performSegue(withIdentifier: "correct", sender: self)
        }
        else {
            LabelEnd.text = "Incorrect Answer! Try again"
        }
    }

}

故事板：

Answer 1

删除Seague并按照以下方式执行操作。假设您要分享NSMutableDictionary。

只需将变量作为要与viewController共享的类型。

Exa。你想与ShareViewController共享数据，然后采取像

这样的变量

var Dict_data = NSMutableDictionary()

现在你要导航的地方，就像假设它是你的ShareViewController一样。记住别忘了将ShareViewController的标识符赋予StoryBoard。

    let PV = self.storyboard?.instantiateViewController(withIdentifier: "ShareViewController") as! ShareViewController
    PV.data = dict_share_date 
    self.navigationController?.pushViewController(PV, animated: true)

这里dict_share_data是你的NSMutableDictionry。您可以选择任何类型，但请记住两种类型必须相同。或者你可以做铸造。

Answer 2

您可以使用AppDelegate在多个Viewcontroller之间共享数据。您始终可以保存，更新和检索App的AppDelegate中定义的数据。 Here是我之前的使用它有效地使用Appdelegate的。如果你需要Swift版本，请告诉我。

在AppDelegate中将变量定义为

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.0.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.0.0/react-dom.min.js"></script>
<div id="root"></div>

您还可以使用NSNotificationCenter在多个viewcontoller中共享数据。如果您有问题重新实施，请告诉我。

如果您需要在导航时将数据从一个viewcontroller传递到另一个viewcontroller，您还可以使用storyboard id实例化viewcontoller，如@Jeetendra在他的ans中解释的那样。

在没有segue的情况下在多个视图控制器之间共享数据（Swift 3）

2 个答案: