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[英]Sending NS user authentication data with Xcode 8.3.3 and Swift 3 from mobile app to server issue
[英]iOS Swift Researchkit Predicate issue in Xcode 8.3.3
我是基於工作 Researchkit 的應用程序,我正在根據 Xcode 8.3.3 中單選題的選定選項導航到問題。 不幸的是應用程序在設置導航規則時動態崩潰。 在 Xcode 8.2.1 的早期我沒有問題並且工作順利。 請讓我知道我的代碼出了什么問題,以下是崩潰日志:
無法將類型“(謂詞:__ObjC.NSPredicate,destinationStepIdentifier:Swift.String)”(0x15fe50570)的值轉換為“(resultPredicate:__ObjC.NSPredicate,destinationStepIdentifier:Swift.String)”(0x15fe60530)。 2017 年 10 月 10 日 07:37:57.530808 Turbo[7440:2981376] 無法將類型“(謂詞:__ObjC.NSPredicate,destinationStepIdentifier:Swift.String)”(0x15fe50570)的值強制轉換為:“__NSPredicate,目的地步長預測,”__NSPredicate : Swift.String)' (0x15fe60530)。
//Question0
let textChoiceOneText = NSLocalizedString("Choice 1", comment: "")
let textChoiceTwoText = NSLocalizedString("Choice 2", comment: "")
let textChoiceThreeText = NSLocalizedString("Choice 3", comment: "")
// The text to display can be separate from the value coded for each choice:
let textChoices = [
ORKTextChoice(text: textChoiceOneText, value: "choice_1" as NSCoding & NSCopying & NSObjectProtocol),
ORKTextChoice(text: textChoiceTwoText, value: "choice_2" as NSCoding & NSCopying & NSObjectProtocol),
ORKTextChoice(text: textChoiceThreeText, value: "choice_3" as NSCoding & NSCopying & NSObjectProtocol)
]
let answerFormat = ORKAnswerFormat.choiceAnswerFormat(with: .singleChoice, textChoices: textChoices)
let questionStepzero = ORKQuestionStep(identifier: String(describing:"singlechoice0"), title: "titel", answer: answerFormat)
//question1
let question1 = ORKQuestionStep(identifier: "question1")
question1.answerFormat = ORKBooleanAnswerFormat()
//question2
let question2 = ORKQuestionStep(identifier: "question2")
question2.answerFormat = ORKBooleanAnswerFormat()
//Question6
let question6 = ORKQuestionStep(identifier: "question6")
question6.answerFormat = ORKBooleanAnswerFormat()
//Question 7
let defaultDate = Date()
let minDate = Date()
let maxDate = Date()
let nameQuestionStepTitle = "title message"
let dateAnswer = ORKDateAnswerFormat(style:ORKDateAnswerStyle.date, defaultDate: defaultDate, minimumDate: minDate, maximumDate: maxDate, calendar: nil)
let dataPickerQuestionStep7 = ORKQuestionStep(identifier: "datequestion7", title:nameQuestionStepTitle, answer: dateAnswer)
let steps = [questionStepzero,question1, question2,question6,dataPickerQuestionStep7]
let task = ORKNavigableOrderedTask(identifier: "task", steps: steps)
let predicate1 = ORKResultPredicate.predicateForChoiceQuestionResult(with: ORKResultSelector(resultIdentifier: "singlechoice0"), matchingPattern: "choice_1")
let predicate2 = ORKResultPredicate.predicateForChoiceQuestionResult(with: ORKResultSelector(resultIdentifier: "singlechoice0"), matchingPattern: "choice_2")
let predicate3 = ORKResultPredicate.predicateForChoiceQuestionResult(with: ORKResultSelector(resultIdentifier: "singlechoice0"), matchingPattern: "choice_3")
let singleChulesArray:NSMutableArray = NSMutableArray()
var dict:NSMutableDictionary = NSMutableDictionary()
dict.setObject(predicate1, forKey: "predicateInstance" as NSCopying)
dict.setObject("datequestion7", forKey: "Destination" as NSCopying)
singleChulesArray.add(dict)
dict = NSMutableDictionary()
dict.setObject(predicate2, forKey: "predicateInstance" as NSCopying)
dict.setObject("question2", forKey: "Destination" as NSCopying)
singleChulesArray.add(dict)
dict = NSMutableDictionary()
dict.setObject(predicate3, forKey: "predicateInstance" as NSCopying)
dict.setObject("question6", forKey: "Destination" as NSCopying)
singleChulesArray.add(dict)
//Static loading of Predicates and Destintionidentifiers
/*
let predicateRule1 = ORKPredicateStepNavigationRule(resultPredicatesAndDestinationStepIdentifiers: [
(resultPredicate: predicate1, destinationStepIdentifier: "datequestion7"),
(resultPredicate: predicate2, destinationStepIdentifier: "question2"),
(resultPredicate: predicate3, destinationStepIdentifier: "question6")
])
*/
print("singleChulesArray",singleChulesArray)
//Dynamic loading of Predicates and Destination identifiers
var stuff:[(predicate: NSPredicate, destinationStepIdentifier: String)] = [(predicate: NSPredicate, destinationStepIdentifier: String)]()
for (_, PredicateDict) in singleChulesArray.enumerated()
{
stuff += [(predicate: (PredicateDict as AnyObject).value(forKey: "predicateInstance") as! NSPredicate, destinationStepIdentifier: (PredicateDict as AnyObject).value(forKey: "Destination") as! String)]
}
let predicateRule = ORKPredicateStepNavigationRule(resultPredicatesAndDestinationStepIdentifiers: stuff as! [(resultPredicate: NSPredicate, destinationStepIdentifier: String)])
task.setNavigationRule(predicateRule, forTriggerStepIdentifier: "singlechoice0")
let taskViewController = ORKTaskViewController(task: task, taskRun: nil)
taskViewController.view.tintColor = TurboConstants.globalAccess.primaryClr
taskViewController.delegate = self
present(taskViewController, animated: true, completion: nil)
您錯誤地使用了ORKPredicateStepNavigationRule
初始值設定項。 初始值設定項采用元組數組作為參數。 您需要在初始化程序中傳遞元組的元素名稱:
let predicateRule = ORKPredicateStepNavigationRule(resultPredicatesAndDestinationStepIdentifiers: [(resultPredicate: predicate1, destinationStepIdentifier: "datequestion7")])
或者使用多個元組:
let predicateRule = ORKPredicateStepNavigationRule(resultPredicatesAndDestinationStepIdentifiers: [
(resultPredicate: predicate1, destinationStepIdentifier: "datequestion7"),
(resultPredicate: predicate2, destinationStepIdentifier: "question2"),
(resultPredicate: predicate3, destinationStepIdentifier: "question6"),
])
或動態(如上面的代碼):
var stuff = [(resultPredicate: NSPredicate, destinationStepIdentifier: String)]()
for predicateDict in singleChulesArray
{
guard
let predicateDict = predicateDict as? [String: Any],
let predicate = predicateDict["predicateInstance"] as? NSPredicate,
let identifier = predicateDict["Destination"] as? String
else { continue }
stuff.append((resultPredicate: predicate, destinationStepIdentifier: identifier))
}
要消除崩潰,您只需將元組元素名稱predicate
更改為正確的名稱resultPredicate
。 當元組用作方法中的參數時,元素名稱的命名必須與方法簽名中的完全相同。 否則你會崩潰。
我冒昧地對您代碼的那部分進行了更多更改。 我刪除了強制轉換(這幾乎不是一個好主意)並使用可選的展開代替。 此外,我使用append
將一個新元組添加到stuff
數組中,而不是創建一個新數組(以元組作為其唯一元素),然后將該數組添加到 stuff 數組中。
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