Ios 如何从本地JSON正确解析JSON？

我很难正确解析本地JSON文件中的JSON，将其存储到数组中，然后在视图中显示它

我的应用程序没有崩溃。屏幕上的标签（4个按钮和1个标签）不会改变值。他们只是得到我在“问题1”，“问题2”中添加的样本值，等等

如何让它显示JSON文件中的值？看起来像

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你能提供更多的细节吗？你能描述一下到目前为止你所做的调试吗？事情进展到了什么程度？哪些特定的方法/行肯定不能像您预期的那样工作？打印错误吗？您想从json文件解析jason数据，对吗？@AaronBrager感谢您的回复。我还没有从调试中得出任何有用的结论。我只是不明白为什么questionObjects NSMutableOrderedSet没有正确填充。我制作了一个视频来告诉你到底发生了什么。

/* Question label storyboard outlet */
@IBOutlet weak var questionLabel: UILabel!

// Answer button storyboard outlets
@IBOutlet weak var topLeftButton: UIButton!
@IBOutlet weak var topRightButton: UIButton!
@IBOutlet weak var bottomLeftButton: UIButton!
@IBOutlet weak var bottomRightButton: UIButton!

/* Questions Set */
var questionObjects = NSMutableOrderedSet(capacity: 100)

override func viewDidLoad() {
    super.viewDidLoad()

    getQuestionsFromJSONFile()
    displayQuestion(0, jsonObjectsSet: questionObjects)

    let string = "some Random Question"
    questionLabel.text = string.capitalizeFirstCharacter
}

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

func getQuestionsFromJSONFile() {
    var questionsJSONData: NSData? = nil
    do {
        let pathToQuestionsJSONFile = try NSBundle.mainBundle().pathForResource("Trivia_100-199", ofType: "json")
        do {
            questionsJSONData = try NSData(contentsOfFile: pathToQuestionsJSONFile!, options: NSDataReadingOptions.DataReadingMappedIfSafe)
            let questionsJSONContent = JSON(data: questionsJSONData!)
            if let object : [String:[String:AnyObject]] = questionsJSONContent.object as? [String:[String:AnyObject]] {
                parseJSONContentIntoObjects(object)
            }

        } catch let error as NSError {
            print(error.localizedDescription)
        }
        /*
        if let questionsJSONContent = JSON(data: questionsJSONData!) as? [String: [String : AnyObject]] {
            parseJSONContentIntoObjects(questionsJSONContent) // PSE: Potential Source of Error
        }
        */
    } catch let error as NSError {
        print(error.localizedDescription)
        print(error.localizedFailureReason)
        print(error.localizedRecoveryOptions)
        print(error.localizedRecoverySuggestion)
    }
}

func parseJSONContentIntoObjects(jsonData: [String: [String : AnyObject]]) {
    var questionHasAProperAnswer = false // indicator to determine if a proper answer was provided by the API for this specific question
    let jsonObjects = NSMutableOrderedSet(capacity: 100)
    for (questionAnswer,questionPropertiesSubJson):(String,[String:AnyObject]) in jsonData {
        if let questionObject = Question(questionObjectSubJson: questionPropertiesSubJson) as? Question { // All parsing code is in the model file (Question.swift)
        if let answerText = questionObject.questionAnswer as? String {
            let questionExclusionKeywords = ["the Earth probably", "boring", "uninteresting", "unremarkable", "we do not know", "nothing", "remarkable", "a number for which", "missing a fact"]
            for questionExclusionKeyword in (questionExclusionKeywords as? [String])! {
                questionHasAProperAnswer = !answerText.containsString(questionExclusionKeyword)
             /*
                if questionHasAProperAnswer {
                    jsonObjects.addObject(questionObject)
                }
            }

            if answerText.containsAny(questionExclusionKeywords) {
                jsonObjects.addObject(questionObject)
                }
            */
            jsonObjects.addObject(questionObject)
            }
        }
    }
    questionObjects = jsonObjects
    if questionObjects.count == 0 {
        let fillerObject = Question(questionText: "Some question", questionAnswer: 1234, questionFalseAnswer1: "333", questionFalseAnswer2: "444", questionFalseAnswer3: "555")
        questionObjects.addObject(fillerObject)
    }

}
}

func displayQuestion(questionIndex: Int, jsonObjectsSet: NSMutableOrderedSet) {
    if let specificQuestionObject = jsonObjectsSet.objectAtIndex(questionIndex) as? Question {
        if let questionText = specificQuestionObject.questionText {
            questionLabel.text = questionText
        }
        if let questionAnswer = specificQuestionObject.questionAnswer as? String {
            let capitalizedQuestionAnswer = questionAnswer.capitalizeFirstCharacter
            topLeftButton.titleLabel?.text = capitalizedQuestionAnswer
        }
        bottomLeftButton.titleLabel?.text = "Some false answer"
        topRightButton.titleLabel?.text = "Some other false answer"
        bottomRightButton.titleLabel?.text = "Another random false answer"
    }
}