为什么我不能从CareKit中子类“CareKit”呢？

Question

注意:两天前我试着在苹果开发者论坛上发帖，但没有收到任何回复，也没有收到任何回复。

我一直被困在我的项目的这一部分，因为我想要反映苹果的方式，他们关心的视图设置，以显示任务给用户。由于某些原因，我不能将'OCKSurveyTaskViewController‘子类，因为我得到的错误是：

“无法在作用域中找到'OCKSurveyTaskViewController‘类型”

我已经通过SPM重新安装了2或3次CareKit，甚至当我看到确切的OCKSurveyTaskViewController.swift文件并在代码中将它从Xcode的CareKit/iOS/Task/ViewController目录中作为一个打开类列出时，我也不明白为什么不能对它进行子类分类。

谁能给我一些指导，或者以另一种方式显示我每天为用户建立的ORKTasks？我更喜欢苹果在他们的wwdc21 CareKit代码中使用的方法，但是遗憾的是，我在这个问题上已经坚持了太久，这是我下一步所需要的。

这是我的文件代码：

import UIKit
import CareKit
import CareKitUI
import CareKitStore
import ResearchKit
import os.log

class StudyTaskFeedViewController: OCKDailyTasksPageViewController, OCKSurveyTaskViewController {}

下面是OCKSurveyTaskViewController.swift文件的代码：

#if !os(watchOS) && canImport(ResearchKit)

import CareKitStore
import CareKitUI
import ResearchKit
import UIKit

// MARK: OCKSurveyTaskViewControllerDelegate

public protocol OCKSurveyTaskViewControllerDelegate: AnyObject {

    func surveyTask(
        viewController: OCKSurveyTaskViewController,
        for task: OCKAnyTask,
        didFinish result: Result<ORKTaskViewControllerFinishReason, Error>)

    func surveyTask(
        viewController: OCKSurveyTaskViewController,
        shouldAllowDeletingOutcomeForEvent event: OCKAnyEvent) -> Bool
}

public extension OCKSurveyTaskViewControllerDelegate {

    func surveyTask(
        viewController: OCKSurveyTaskViewController,
        for task: OCKAnyTask,
        didFinish result: Result<ORKTaskViewControllerFinishReason, Error>) {
        // No-op
    }

    func surveyTask(
        viewController: OCKSurveyTaskViewController,
        shouldAllowDeletingOutcomeForEvent event: OCKAnyEvent) -> Bool {
        return true
    }
}

open class OCKSurveyTaskViewController: OCKTaskViewController<OCKTaskController, OCKSurveyTaskViewSynchronizer>, ORKTaskViewControllerDelegate {

    private let extractOutcome: (ORKTaskResult) -> [OCKOutcomeValue]?

    public let survey: ORKTask

    public weak var surveyDelegate: OCKSurveyTaskViewControllerDelegate?

    public convenience init(
        task: OCKAnyTask,
        eventQuery: OCKEventQuery,
        storeManager: OCKSynchronizedStoreManager,
        survey: ORKTask,
        viewSynchronizer: OCKSurveyTaskViewSynchronizer = OCKSurveyTaskViewSynchronizer(),
        extractOutcome: @escaping (ORKTaskResult) -> [OCKOutcomeValue]?) {

        self.init(
            taskID: task.id,
            eventQuery: eventQuery,
            storeManager: storeManager,
            survey: survey,
            viewSynchronizer: viewSynchronizer,
            extractOutcome: extractOutcome
        )
    }

    public init(
        taskID: String,
        eventQuery: OCKEventQuery,
        storeManager: OCKSynchronizedStoreManager,
        survey: ORKTask,
        viewSynchronizer: OCKSurveyTaskViewSynchronizer = OCKSurveyTaskViewSynchronizer(),
        extractOutcome: @escaping (ORKTaskResult) -> [OCKOutcomeValue]?) {

        self.survey = survey
        self.extractOutcome = extractOutcome

        super.init(
            viewSynchronizer: viewSynchronizer,
            taskID: taskID,
            eventQuery: eventQuery,
            storeManager: storeManager
        )
    }

    override open func taskView(
        _ taskView: UIView & OCKTaskDisplayable,
        didCompleteEvent isComplete: Bool,
        at indexPath: IndexPath,
        sender: Any?) {

        guard isComplete else {

            if let event = controller.eventFor(indexPath: indexPath),

               let delegate = surveyDelegate,

               delegate.surveyTask(
                    viewController: self,
                    shouldAllowDeletingOutcomeForEvent: event) == false {

                return
            }

            let cancelAction = UIAlertAction(
                title: "Cancel",
                style: .cancel,
                handler: nil
            )

            let confirmAction = UIAlertAction(
                title: "Delete", style: .destructive) { _ in
                
                super.taskView(
                    taskView,
                    didCompleteEvent: isComplete,
                    at: indexPath,
                    sender: sender
                )
            }

            let warningAlert = UIAlertController(
                title: "Delete",
                message: "Are you sure you want to delete your response?",
                preferredStyle: .actionSheet
            )

            warningAlert.addAction(cancelAction)
            warningAlert.addAction(confirmAction)
            present(warningAlert, animated: true, completion: nil)

            return
        }

        let surveyViewController = ORKTaskViewController(
            task: survey,
            taskRun: nil
        )

        let directory = FileManager.default.urls(
            for: .documentDirectory,
            in: .userDomainMask
        ).last!.appendingPathComponent("ResearchKit", isDirectory: true)

        surveyViewController.outputDirectory = directory
        surveyViewController.delegate = self

        present(surveyViewController, animated: true, completion: nil)
    }

    // MARK: ORKTaskViewControllerDelegate
    
    open func taskViewController(
        _ taskViewController: ORKTaskViewController,
        didFinishWith reason: ORKTaskViewControllerFinishReason,
        error: Error?) {

        taskViewController.dismiss(animated: true, completion: nil)

        guard let task = controller.taskEvents.first?.first?.task else {
            assertionFailure("Task controller is missing its task")
            return
        }

        if let error = error {
            surveyDelegate?.surveyTask(
                viewController: self,
                for: task,
                didFinish: .failure(error)
            )
            return
        }

        guard reason == .completed else {
            return
        }

        let indexPath = IndexPath(item: 0, section: 0)

        guard let event = controller.eventFor(indexPath: indexPath) else {
            return
        }

        guard let values = extractOutcome(taskViewController.result) else {
            return
        }

        let outcome = OCKOutcome(
            taskUUID: event.task.uuid,
            taskOccurrenceIndex: event.scheduleEvent.occurrence,
            values: values
        )

        controller.storeManager.store.addAnyOutcome(
            outcome,
            callbackQueue: .main) { result in

            if case let .failure(error) = result {

                self.surveyDelegate?.surveyTask(
                    viewController: self,
                    for: task,
                    didFinish: .failure(error)
                )
            }

            self.surveyDelegate?.surveyTask(
                viewController: self,
                for: task,
                didFinish: .success(reason)
            )
        }
    }
}

#endif

Answer 1

当我试图在我自己的应用程序中复制“恢复”应用程序的演示代码时，我也遇到了同样的问题。在比较了我的项目设置和“恢复”之后，我注意到我没有在我的目标应用程序的标志和功能中添加"HealthKit“的功能。在我添加了这个功能之后，它就起作用了。