ios - 我对 ORKResultPredicate 的 predicateForConsent 函数有问题

Question

当我点击“同意”按钮时，它应该转到“同意完成步骤”，但它会转到“同意不同意步骤”。请问谁能指出这是什么问题吗？

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))

Answer 1

问题在于传递给 +predicateForConsentWithResultSelector:didConsent: 的 resultSelector 必须提供所需的步骤标识符(stepIdentifier 参数)和所需的签名标识符(resultIdentifier 参数)。

而不是:

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

应该是:

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