无法从角 4 快速插入法律归属

我是 Xcode 和移动应用程序的新手。我正在做一个应用程序来查找当前位置。我在模拟器上测试了它并在控制台中收到了此消息。 “无法从角 4 插入合法归属”。这是什么意思以及如何解决它？

import UIKit
import Alamofire
import AlamofireImage
import MapKit
import CoreLocation

class MapVC: UIViewController

@IBOutlet weak var mapView: MKMapView!

var locationManager = CLLocationManager()
let authorizationStatus = CLLocationManager.authorizationStatus()
let regionRadius: Double = 1000

override func viewDidLoad() {
    super.viewDidLoad()

    mapView.delegate = self
    locationManager.delegate = self
    configureLocationServices()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

@IBAction func centerMapPressed(_ sender: Any) {
    if authorizationStatus == .authorizedAlways || authorizationStatus == .authorizedWhenInUse{
        centerMapOnUserLocation()
    }
}

MKMapViewDelegate：

func centerMapOnUserLocation(){
guard let coordinate = locationManager.location?.coordinate else{return}
let coordinateRegion = MKCoordinateRegionMakeWithDistance(coordinate, regionRadius*2.0, regionRadius * 2.0 )
mapView.setRegion(coordinateRegion, animated: true)

}

CLLocationManagerDelegate：

func configureLocationServices(){
    if authorizationStatus == .notDetermined{
        locationManager.requestAlwaysAuthorization()
    }else{
        return}
}
func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {

    centerMapOnUserLocation()
}

当找不到正确形式的所需信息时，就会出现此问题。如果您的设备我试图获取某个位置或某个号码a变量，并且a需要变量afun..该值未设置为a, but afun称为发生此错误..

调用你的单元格坐标viewdidload没有任何其他功能。

这是获取手机位置的最简单方法。 1.您应该已经更新了infor.plist下设备的隐私

在关闭标签之前将以下行添加到您的 plist 中

    <key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
    <string>Privacy - Location Always and When In Use Usage Description</string>
    <key>NSLocationAlwaysUsageDescription</key>
    <string>Privacy - Location Always Usage Description</string>
    <key>NSLocationWhenInUseUsageDescription</key>
    <string>Privacy - Location When In Use Usage Description</string>

之后..这是最简单的工作代码..我很高兴使用它，没有任何问题..

import CoreLocation
import MapKit

class AddressVc: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {

    @IBOutlet weak var map: MKMapView!
    var locationManager = CLLocationManager()

这是将地图移动到所需位置中心的代码

    let latDelta:Double = 0.5
    let lngDelta:Double = 0.5

    let latitude:Double = 37.57554038
    let longitude:Double = -122.40068475

    let locationcoordinates = CLLocationCoordinate2D(latitude: latitude, longitude: longitude)
    let zoomSpan = MKCoordinateSpan(latitudeDelta: latDelta, longitudeDelta: lngDelta)
    let region = MKCoordinateRegion(center: locationcoordinates, span: zoomSpan)
    self.map.setRegion(region, animated: true) 

在上面的代码中..如果您将设备的纬度和经度位置放入纬度和经度中，则会将地图移动到您设备的位置。

现在如何获取设备的位置。 这是您可以放入的代码viewDidLoad()功能。

override func viewDidLoad() {
    super.viewDidLoad()


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

    // device latitude = (locationManager.location?.coordinate.latitude)!
    // device longitude = (locationManager.location?.coordinate.longitude)!
}

这是检测设备的纬度和经度值。你可以把它们放在上面提到的代码中..

这是完整的代码。

import CoreLocation
import MapKit

class AddressVc: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {

    @IBOutlet weak var map: MKMapView!
    var locationManager = CLLocationManager()


override func viewDidLoad() {
    super.viewDidLoad()


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

    devicelatitude = (locationManager.location?.coordinate.latitude)!
    devicelongitude = (locationManager.location?.coordinate.longitude)!



    let latDelta:Double = 0.5
    let lngDelta:Double = 0.5

    let latitude:Double = devicelatitude
    let longitude:Double = devicelongitude

    let locationcoordinates = CLLocationCoordinate2D(latitude: latitude, longitude: longitude)
    let zoomSpan = MKCoordinateSpan(latitudeDelta: latDelta, longitudeDelta: lngDelta)
    let region = MKCoordinateRegion(center: locationcoordinates, span: zoomSpan)
    self.map.setRegion(region, animated: true) 
 }

我希望这会对您有所帮助……如果没有……会有很多其他人面临这个问题。

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