swift - 线程 1 : signal SIGSTOP runtime error

Question

我对 Swift 很陌生，所以我不太确定错误发生在哪里。

这是我的 View Controller 。也许我没有正确调用函数，因为在我包含更改时态的函数后开始发生此错误。

有趣的是，如果我重新启动运行 iOS 9 的模拟器并且没有给我任何运行时错误，应用程序运行良好。我使用的是 Xcode 7.0 beta 版。

任何帮助将不胜感激。

提前致谢。

import UIKit
import AVFoundation


class ViewController: UIViewController {


    let synth = AVSpeechSynthesizer()
    var myUtterance = AVSpeechUtterance(string: "")

    var sentence = ""

    let subject: [String] = ["I", "You", "He" , "She", "We", "They"]




    let verbNoun =  [["eat" ,"eats", "ate", "will eat", "an apple", "a banana", "a cake", "a sandwhich" ],
        ["drink" ,"drinks", "drank", "will drink", "water", "milk","tea","coffee"]]



    var i = 0
    var j = 0
    var t = 0
    var k = 4
    var subjectCount = 6  //var subjectCount = subject.count()
    var verbCount = 2
    var nounCount = 4
    var tense = "present"


    func modulo (a: Int, b: Int) ->Int{

        if a%b<0 {

            return ((a%b)+b)


        }else{

        return a%b

        }

    }

    func getTense(tense: String) ->Int{


        if tense == "present" {
            return 0
            if i==2 || i==3 { return 1}
        }
        else if tense == "past" { return 2 }
        else if tense == "future" { return 3 }

        return 0
    }



/*   func sentenceGenerator(s: String, v: String, n: String) -> Void {

        verbLabel!.text = v

        nounLabel!.text = n

        subjectLabel.text = s


    }
*/


    @IBOutlet var subjectLabel: UILabel!

    @IBOutlet var verbLabel: UILabel!

    @IBOutlet var nounLabel: UILabel!

    @IBOutlet var sent: UILabel!


    @IBAction func futureTense(sender: AnyObject) {

        tense = "future"

        t = getTense(tense)

        verbLabel!.text = verbNoun[j][t]
        nounLabel!.text = verbNoun[j][k]
        subjectLabel!.text = subject[i]

        sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]


        sent!.text = sentence

    }





    @IBAction func pastTense(sender: AnyObject) {



        tense = "past"



        t = getTense(tense)

        verbLabel!.text = verbNoun[j][t]
        nounLabel!.text = verbNoun[j][k]
        subjectLabel!.text = subject[i]

        sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]


        sent!.text = sentence

    }





    @IBAction func subjectPrevious(sender: AnyObject) {

        i--

        i = modulo(i,b: subjectCount)

        t = getTense(tense)

        subjectLabel!.text = subject[i]
        verbLabel!.text = verbNoun[j][t]
        nounLabel!.text = verbNoun[j][k]


//        sentenceGenerator(subject[i], v: verbNoun[j][t], n: verbNoun[j][k])

      sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]


        sent!.text = sentence

}




    @IBAction func subjectNext(sender: AnyObject) {


        i++

         i = modulo(i,b: 6)

        t = getTense(tense)

        subjectLabel!.text = subject[i]
        verbLabel!.text = verbNoun[j][t]
        nounLabel!.text = verbNoun[j][k]

        sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]

        sent!.text = sentence

  }




    @IBAction func verbNext(sender: AnyObject) {


        j++

         j = modulo(j,b: verbCount)

        t = getTense(tense)


        verbLabel!.text = verbNoun[j][t]
        nounLabel!.text = verbNoun[j][k]

        sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]

        sent!.text = sentence

    }


    @IBAction func verbPrevious(sender: AnyObject) {

        j--

        j = modulo(j,b: verbCount)

        t = getTense(tense)


        verbLabel!.text = verbNoun[j][t]
        nounLabel!.text = verbNoun[j][k]


        sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]


        sent!.text = sentence

    }




    @IBAction func nounPrev(sender: AnyObject) {

        k--

        k = modulo(k,b: nounCount)+4

        t = getTense(tense)

        verbLabel!.text = verbNoun[j][t]

        nounLabel!.text = verbNoun[j][k]

        sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]

        sent!.text = sentence

    }


    @IBAction func nounNext(sender: AnyObject) {

        k++

        k = modulo(k,b: nounCount)+4

        t = getTense(tense)

        verbLabel!.text = verbNoun[j][t]
        nounLabel!.text = verbNoun[j][k]

        sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]

        sent!.text = sentence
    }


    @IBAction func splish(sender: AnyObject) {

        myUtterance = AVSpeechUtterance(string: sentence)
        myUtterance.rate = 0.4
        synth.speakUtterance(myUtterance)


    }

    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.
    }


  /* override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        self.view.endEditing(true)
    }

    func textFieldshouldReturn(textField: UITextField) -> Bool{

        textField.resignFirstResponder()

        return true
    }*/
}

Answer 1

这是一个很好的问题示例，因为您不够具体，所以不会得到好的答案。对于像您这样正在学习的人，这里有一些关于调试和获得良好帮助的提示。

1) 准确告诉大家问题出在哪里。听起来您的应用程序正在以 SIGSTOP 终止，然后堆栈跟踪不会告诉您它发生的位置。但我不确定这是真的，因为你只是把错误放在标题中。在正文中清楚地陈述你知道的一切。

2) 并且不要包含您不知道相关的代码，只包含发生崩溃或直接相关的代码。人们总是可以要求您提供更多代码，但代码越多，就越难理解您在做什么。

3) 如果您不知道崩溃发生在何处，请在调试器中设置断点并跟踪直到发生错误，然后将行告诉我们。在这种情况下，我将从您添加的新代码开始。通常，如果您知道该行，您会自己发现问题，从而节省您编写此内容的时间。

4) 如果设置断点并单步执行代码无法将您带到崩溃发生的地方，请进入调试器断点，单击其 View 左下角的 + 按钮(它应该是使用调试器运行时屏幕左侧)并添加“异常断点”。 Swift 无法捕获来自 Objective C 代码/库/框架的异常，此断点将为您捕获它们并为您提供有关它们发生位置的更多信息。

如果您努力准确地确定错误发生的位置，通常很容易自行修复错误。我知道这对你有帮助已经很晚了，但希望这对其他新 Swifties 有帮助，

最美好的祝愿，兰迪