Ios 使用CL位置的基于位置的应用程序。我的代码中有一行出现问题

我正在制作此应用程序，并不断获取此类型为“LocationsStorage”的错误值，该值没有成员“saveCLLocationToDisk”

我不明白为什么会有这样的问题，我甚至试着查看苹果网站上的文档，但我仍然不知道问题出在哪里。该行在第4节之后

import UIKit
import CoreLocation
import UserNotifications

@UIApplicationMain

class AppDelegate: UIResponder, UIApplicationDelegate {
  var window: UIWindow?
  static let geoCoder = CLGeocoder()

  let center = UNUserNotificationCenter.current()
  let locationManager = CLLocationManager()

  func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
    let rayWenderlichColor = UIColor(red: 0/255, green: 104/255, blue: 55/255, alpha: 1)
    UITabBar.appearance().tintColor = rayWenderlichColor
    center.requestAuthorization(options: [.alert, .sound]) { granted, error in

    }
    locationManager.requestAlwaysAuthorization()
    locationManager.startMonitoringVisits()
    locationManager.delegate = self as? CLLocationManagerDelegate

    locationManager.distanceFilter = 35
    locationManager.allowsBackgroundLocationUpdates = true
    locationManager.startUpdatingLocation()
    return true
  }

}
extension AppDelegate: CLLocationManagerDelegate {
  func locationManager(_ manager: CLLocationManager, didVisit visit: CLVisit) {
    // create CLLocation from the coordinates of the CLVisit
    let clLocation = CLLocation(latitude: visit.coordinate.latitude, longitude: visit.coordinate.longitude)
    AppDelegate.geoCoder.reverseGeocodeLocation(clLocation) { placemarks, _ in
      if let place = placemarks?.first {
        let description = "\(place)"
        self.newVisitReceived(visit, description: description)
      }
    }

  }

  func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
      // 1
      guard let location = locations.first else {
        return
      }

      // 2
      AppDelegate.geoCoder.reverseGeocodeLocation(location) { placemarks, _ in
      if let place = placemarks?.first {
        // 3
        let description = "Fake visit: \(place)"

        //4
        let fakeVisit = FakeVisit(
          coordinates: location.coordinate,
          arrivalDate: Date(),
          departureDate: Date())
        self.newVisitReceived(fakeVisit, description: description)
      }
    }
  }
  // MY issue is here in the line with the ** before and after it
  func newVisitReceived(_ visit: CLVisit, description: String) {
    let location = Location(visit: visit, descriptionString: description)
    **LocationsStorage.shared.saveLocationOnDisk(location)**

    // save location to the disk

    // Get location description

    let content = UNMutableNotificationContent()
    content.title = "New Journal Entry Looks like you are working through the following tutorial

Just over half way through the tutorial there is a section and code block that looks like this:


Saving Records on Disk

Open LocationsStorage.swift. At the bottom of the class, add the following function:


func saveLocationOnDisk(_ location: Location) {
  // 1
  let encoder = JSONEncoder()
  let timestamp = location.date.timeIntervalSince1970

  // 2
  let fileURL = documentsURL.appendingPathComponent("\(timestamp)")

  // 3
  let data = try! encoder.encode(location)

  // 4
  try! data.write(to: fileURL)

  // 5
  locations.append(location)
}

导入UIKit
导入核心定位
导入用户通知
@UIApplicationMain
类AppDelegate:UIResponder、UIApplicationLegate{
变量窗口：UIWindow？
静态let geoCoder=CLGeocoder
let center=UNUserNotificationCenter.current
让locationManager=CLLocationManager
func应用程序uApplication:UIApplication，didFinishLaunchingWithOptions launchOptions:[UIApplication.launchOptions键：任意]？=nil->Bool{
让rayWenderlichColor=UIColorred:0/255，green:104/255，blue:55/255，alpha:1
uitabar.appearance.tintColor=rayWenderlichColor
center.requestAuthorizationoptions:[.alert、.sound]{已授予，中有错误
}
locationManager.requestAlwaysAuthorization
locationManager.StartMonitoringVisitions
locationManager.delegate=自我身份？CLLocationManagerDelegate
locationManager.distanceFilter=35
locationManager.AllowBackgroundLocationUpdates=true
locationManager.startUpdatingLocation
返回真值
}
}
扩展AppDelegate:CLLocationManagerDelegate{
职能地点经理\经理：CLLocationManager，didVisit访问：CLVisit{
//根据CLVisit的坐标创建CLLocation
让clLocation=CLLocationlatitude:visit.coordinate.lation，经度：visit.coordinate.longitude
AppDelegate.geoCoder.ReverseGeocodeLocationAllocation{placemarks，u中
如果let place=placemarks？首先{
让description=\place
self.newVisitReceivedvisit，描述：描述
}
}
}
func locationManager\uManager:CLLocationManager，didUpdateLocations位置：[CLLocation]{
// 1
防护装置位置=位置。首先是其他位置{
回来
}
// 2
AppDelegate.geoCoder.ReverseGeocodeLocation{placemarks，uu中
如果let place=placemarks？首先{
// 3
let description=假访问：\place
//4
让假参观=假参观
坐标：location.coordinate，
到达日期：，
出发日期：日期
self.newVisitReceivedfakeVisit，描述：描述
}
}
}
//我的问题在这里与**前后一致
func newVisitReceived_uu访问：CLVisit，描述：字符串{
let location=Locationvisit:visit，description字符串：description
**LocationsStorage.shared.SaveLocationOnDisklLocation**
//将位置保存到磁盘
//获取位置描述
let content=UNMutableNotificationContent
content.title=新日记账分录看起来您正在完成以下工作

本教程刚过一半，有一个部分和代码块如下所示：

在磁盘上保存记录

打开LocationsStorage.swift。在类的底部添加以下函数：

请确保您添加了此方法，并且在代码中使用了正确的名称来调用该方法
您的代码只有saveLocationOnDisk，但错误是关于saveCLLocationToDisk。对吗？我不熟悉名为LocationsStorage的任何内容，但函数名似乎不一致。@scriptable谢谢您，先生！这很有效非常完美-不确定我怎么会错过它