我有問題，ORKResultPredicate的predicateForConsent函數

當我點擊同意按鈕時，它應該去AgreeCompletionStep，但它去同意不同意步驟。請任何人都可以指出是什麼問題？我有問題，ORKResultPredicate的predicateForConsent函數

let consentTask = ORKNavigableOrderedTask(identifier: String(describing:Identifier.consentTask), steps: [reviewConsentStep, disAgreeStep, completionStep]) 

resultSelector = ORKResultSelector(
    resultIdentifier: String(
     describing: Identifier.consentReviewStep)) 
let predicateAgree = ORKResultPredicate.predicateForConsent(
    with: resultSelector, didConsent: true) 

let agreePredicateRule = ORKPredicateStepNavigationRule(
    resultPredicatesAndDestinationStepIdentifiers: [ 
     (predicateAgree, 
     String(describing: Identifier.consentCompletionStep))]) 

consentTask.setNavigationRule(
    agreePredicateRule, 
    forTriggerStepIdentifier:String(
     describing:Identifier.consentReviewStep)) 

let consentDirectRule = ORKDirectStepNavigationRule(
    destinationStepIdentifier: ORKNullStepIdentifier) 
consentTask.setNavigationRule(
    consentDirectRule, 
    forTriggerStepIdentifier:String(
     describing:Identifier.consentDisagreeStep))

來源

2016-12-06 iarpits

則可以反向添加'Rule'這個命令和檢查。 –

所以我將predicateRule上面的directRule移動了，但它不起作用。 – iarpits

的問題是，所述resultSelector傳遞給+predicateForConsentWithResultSelector:didConsent:必須提供所需的步驟標識符（stepIdentifier參數）和所期望的簽名標識符（resultIdentifier參數）。

相反的：

let resultSelector = ORKResultSelector(resultIdentifier:String(describing: Identifier.consentReviewStep)) 
let predicateAgree = ORKResultPredicate.predicateForConsent(with: resultSelector, didConsent: true)

它應該是：

let resultSelector = ORKResultSelector(stepIdentifier: String(describing: Identifier.consentReviewStep), resultIdentifier: signature.identifier) 
let predicateAgree = ORKResultPredicate.predicateForConsent(with: resultSelector, didConsent: true)

來源

2017-01-06 17:07:38 iarpits

我有問題，ORKResultPredicate的predicateForConsent函數

回答

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