Swift CMMotionActivityManager 未显示正确的授权状态

Posted 2023-03-05

【中文标题】Swift CMMotionActivityManager 未显示正确的授权状态

【英文标题】：Swift CMMotionActivityManager not displaying correct authorization Status

【发布时间】：2018-07-22 02:26:22

【问题描述】：

我正在尝试创建一个非常简单的计步器，并在 https://brightinventions.pl/blog/coremotion-pedometer-swift/ 关注 Kamil Wysocki 的文章。但是，我的.isActivityAvailable() 正在返回 False，从而阻止我的任何其他函数启动。此外，我的CMMotionActivityManager.authorizationStatus() 呼叫返回 3（拒绝）。我一生都无法弄清楚为什么会这样。

我已将 Motion Usage Description 添加到我的 info.plist 中，并在我的 iPhone 模拟器上启用了授权。我还尝试在调试菜单中模拟“城市漫步”模式，但没有帮助。我的代码如下。

import UIKit
import CoreMotion
import CoreLocation

class ViewController: UIViewController 

    @IBOutlet weak var startButton: UIButton!
    @IBOutlet weak var activityTypeLabel: UILabel!
    @IBOutlet weak var stepsCountLabel: UILabel!

    private let activityManager = CMMotionActivityManager()
    private let pedometer = CMPedometer()
    private var shouldStartUpdating: Bool = false
    private var startDate: Date? = nil

    override func viewDidLoad() 
        super.viewDidLoad()

        startButton.addTarget(self, action: #selector(didTapStartButton), for: .touchUpInside)

    

    override func viewWillAppear(_ animated: Bool) 
        super.viewWillAppear(animated)
        guard let startDate = startDate else  return 
        updateStepsCountLabelUsing(startDate: startDate)
    

    @objc private func didTapStartButton() 
        shouldStartUpdating = !shouldStartUpdating
        shouldStartUpdating ? (onStart()) : (onStop())
    



extension ViewController 
    private func onStart() 
        startButton.setTitle("Stop", for: .normal)
        startDate = Date()
        checkAuthorizationStatus()
        startUpdating()
    

    private func onStop() 
        startButton.setTitle("Start", for: .normal)
        startDate = nil
        stopUpdating()
    

    private func startUpdating() 
        if CMMotionActivityManager.isActivityAvailable() 
            startTrackingActivityType()
         else 
            activityTypeLabel.text = "Not available"
        

        if CMPedometer.isStepCountingAvailable() 
            startCountingSteps()
         else 
            stepsCountLabel.text = "Not available"
        
    

    private func checkAuthorizationStatus() 
        switch CMMotionActivityManager.authorizationStatus() 
        case CMAuthorizationStatus.denied:
            onStop()
            activityTypeLabel.text = "Not available"
            stepsCountLabel.text = "Not available"
        default:break
        
    

    private func stopUpdating() 
        activityManager.stopActivityUpdates()
        pedometer.stopUpdates()
        pedometer.stopEventUpdates()
    

    private func on(error: Error) 
        //handle error
    

    private func updateStepsCountLabelUsing(startDate: Date) 
        pedometer.queryPedometerData(from: startDate, to: Date()) 
            [weak self] pedometerData, error in
            if let error = error 
                self?.on(error: error)
             else if let pedometerData = pedometerData 
                DispatchQueue.main.async 
                    self?.stepsCountLabel.text = String(describing: pedometerData.numberOfSteps)
                
            
        
    

    private func startTrackingActivityType() 
        activityManager.startActivityUpdates(to: OperationQueue.main) 
            [weak self] (activity: CMMotionActivity?) in
            guard let activity = activity else  return 
            DispatchQueue.main.async 
                if activity.walking 
                    self?.activityTypeLabel.text = "Walking"
                 else if activity.stationary 
                    self?.activityTypeLabel.text = "Stationary"
                 else if activity.running 
                    self?.activityTypeLabel.text = "Running"
                 else if activity.automotive 
                    self?.activityTypeLabel.text = "Automotive"
                
            
        
    

    private func startCountingSteps() 
        pedometer.startUpdates(from: Date()) 
            [weak self] pedometerData, error in
            guard let pedometerData = pedometerData, error == nil else  return 

            DispatchQueue.main.async 
                self?.stepsCountLabel.text = pedometerData.numberOfSteps.stringValue
            
        
    

Here is my viewController upon running and clicking start

非常感谢任何可以提供任何知识的人！！！

【问题讨论】：

请尝试在 ios 设备中运行您的代码，因为核心运动使用设备传感器获取用户活动。

【参考方案1】：

使用此代码检查授权状态：

 let manager = CMMotionActivityManager()


 let today = Date()

    manager.queryActivityStarting(from: today, to: today, to: OperationQueue.main, withHandler:  (activities: [CMMotionActivity]?, error: Error?) -> () in
        if error != nil 
            let errorCode = (error! as NSError).code
            if errorCode == Int(CMErrorMotionActivityNotAuthorized.rawValue) 
                print("NotAuthorized")
            
         else 
            print("Authorized")
         //Start Tracking Activity 
        
        manager.stopActivityUpdates()
    )

希望这对你有用。