Question

我试图让我在自定义区域中的每个CKRecord单独显示在我的地图上作为注释。我使用注释标题和副标题作为CKRecord中的其他字段，但对于annotation.cordinate，我很难将其连接到CKRecord＆＃34;位置＆＃34;领域。

func fetchTruck() {
    let truePredicate = NSPredicate(value: true)
    let eventQuery = CKQuery(recordType: "User", predicate: truePredicate)
    let queryOperation = CKQueryOperation(query: eventQuery)

    queryOperation.recordFetchedBlock = { (record : CKRecord!) in
        self.truck.append(record)
        let annotation = MKPointAnnotation()
        annotation.title = record["username"] as? String
        annotation.subtitle = record["hours"] as? String
        **if let location = record["location"] as? CLLocation {
annotation.coordinate = location.coordinate}** Answer 

        print("recordFetchedBlock: \(record)")

        self.mapView.addAnnotation(annotation)
    }

    queryOperation.queryCompletionBlock = { (cursor, error) in
        print("queryCompletionBlock: \(self.truck)")
    }

    database.add(queryOperation)
}

override func viewDidLoad() {
    super.viewDidLoad()

    fetchTruck()

    locationManager.delegate = self
    locationManager.desiredAccuracy = kCLLocationAccuracyBest
    locationManager.requestWhenInUseAuthorization()
    locationManager.startUpdatingLocation()
}

Answer 1

您的CKRecord将有一个位置字段。这将是CLLocation类型的值。

coordinate的{{1}}属性属于MKPointAnnotation。

CLLocationCoordinate2D的{{1}}属性也属于CLLocation类型。

coordinate

使用＆＃34;位置＆＃34;

1 个答案: