关于ios：获取用户的当前位置/坐标


Get User's Current Location / Coordinates

如何存储用户的当前位置并在地图上显示位置？

我能够在地图上显示预定义的坐标，我只是不知道如何从设备接收信息。

另外我知道我必须在Plist中添加一些项目。 我怎样才能做到这一点？

要获取用户的当前位置，您需要声明：

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let locationManager = CLLocationManager()

在viewDidLoad()中，您必须实例化CLLocationManager类，如下所示：

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// Ask for Authorisation from the User.
self.locationManager.requestAlwaysAuthorization()

// For use in foreground
self.locationManager.requestWhenInUseAuthorization()

if CLLocationManager.locationServicesEnabled() {
    locationManager.delegate = self
    locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
    locationManager.startUpdatingLocation()
}

然后在CLLocationManagerDelegate方法中，您可以获取用户的当前位置坐标：

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func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    guard let locValue: CLLocationCoordinate2D = manager.location?.coordinate else { return }
    print("locations = \(locValue.latitude) \(locValue.longitude)")
}

在info.plist中，您必须添加NSLocationAlwaysUsageDescription
和您的自定义警报消息; AppName(演示应用)想要使用您当前的位置。

相关讨论

你应该做这些步骤：

  • 将CoreLocation.framework添加到BuildPhases - >使用库链接二进制文件(从XCode 7.2.1开始不再需要)
  • 将CoreLocation导入到您的类中 - 很可能是ViewController.swift
  • 将CLLocationManagerDelegate添加到您的类声明中
  • 将NSLocationWhenInUseUsageDescription和NSLocationAlwaysUsageDescription添加到plist

  • 初始位置管理员：

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    locationManager = CLLocationManager()
    locationManager.delegate = self;
    locationManager.desiredAccuracy = kCLLocationAccuracyBest
    locationManager.requestAlwaysAuthorization()
    locationManager.startUpdatingLocation()

  • 获取用户位置：

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    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        let locValue:CLLocationCoordinate2D = manager.location!.coordinate
        print("locations = \(locValue.latitude) \(locValue.longitude)")
    }
    • 相关讨论

    使用Swift 5更新iOS 12.2

    you must add following privacy permissions in plist file

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    <key>NSLocationWhenInUseUsageDescription</key>
    <string>Description</string>

    <key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
    <string>Description</string>

    <key>NSLocationAlwaysUsageDescription</key>
    <string>Description</string>

    我就是这样

    getting current location and showing on Map in Swift 2.0

    确保已将CoreLocation和MapKit框架添加到项目中(XCode 7.2.1不需要这样做)

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    import Foundation
    import CoreLocation
    import MapKit

    class DiscoverViewController : UIViewController, CLLocationManagerDelegate {

        @IBOutlet weak var map: MKMapView!
        var locationManager: CLLocationManager!

        override func viewDidLoad()
        {
            super.viewDidLoad()

            if (CLLocationManager.locationServicesEnabled())
            {
                locationManager = CLLocationManager()
                locationManager.delegate = self
                locationManager.desiredAccuracy = kCLLocationAccuracyBest
                locationManager.requestAlwaysAuthorization()
                locationManager.startUpdatingLocation()
            }
        }

        func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation])
        {

            let location = locations.last! as CLLocation

            let center = CLLocationCoordinate2D(latitude: location.coordinate.latitude, longitude: location.coordinate.longitude)
            let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01))

            self.map.setRegion(region, animated: true)
        }
    }

    这是结果屏幕

    a screenshot of the map, centered in Mumbai

    相关讨论

    @wonderwhy I have added my code screenshot. pls check it. You will have to add <x3>

    NSLocationWhenInUseUsageDescription =在应用程序处于后台时请求使用位置服务的权限。在你的plist文件中。

    如果这样有效，那么请投票给答案。

    相关讨论

    导入库如：

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    import CoreLocation

    设置代表：

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    CLLocationManagerDelegate

    变量如下：

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    var locationManager:CLLocationManager!

    在viewDidLoad()上写这个漂亮的代码：

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     locationManager = CLLocationManager()
        locationManager.delegate = self
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
        locationManager.requestAlwaysAuthorization()

        if CLLocationManager.locationServicesEnabled(){
            locationManager.startUpdatingLocation()
        }

    编写CLLocation委托方法：

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        //MARK: - location delegate methods
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        let userLocation :CLLocation = locations[0] as CLLocation

        print("user latitude = \(userLocation.coordinate.latitude)")
        print("user longitude = \(userLocation.coordinate.longitude)")

        self.labelLat.text ="\(userLocation.coordinate.latitude)"
        self.labelLongi.text ="\(userLocation.coordinate.longitude)"

        let geocoder = CLGeocoder()
        geocoder.reverseGeocodeLocation(userLocation) { (placemarks, error) in
            if (error != nil){
                print("error in reverseGeocode")
            }
            let placemark = placemarks! as [CLPlacemark]
            if placemark.count>0{
                let placemark = placemarks![0]
                print(placemark.locality!)
                print(placemark.administrativeArea!)
                print(placemark.country!)

                self.labelAdd.text ="\(placemark.locality!), \(placemark.administrativeArea!), \(placemark.country!)"
            }
        }

    }
    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        print("Error \(error)")
    }

    现在设置访问该位置的权限，因此将这些键值添加到info.plist文件中

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     <key>NSLocationAlwaysUsageDescription</key>
    <string>Will you allow this app to always know your location?</string>
    <key>NSLocationWhenInUseUsageDescription</key>
    <string>Do you allow this app to know your current location?</string>
    <key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
    <string>Do you allow this app to know your current location?</string>

    enter image description here

    100％正常工作没有任何问题。 TESTED

    相关讨论

    首先导入Corelocation和MapKit库：

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    import MapKit
    import CoreLocation

    从CLLocationManagerDelegate继承到我们的类

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    class ViewController: UIViewController, CLLocationManagerDelegate

    创建一个locationManager变量，这将是您的位置数据

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    var locationManager = CLLocationManager()

    创建一个函数来获取位置信息，具体这个确切的语法有效：

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    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {

    在您的函数中为用户创建一个常量当前位置

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    let userLocation:CLLocation = locations[0] as CLLocation // note that locations is same as the one in the function declaration

    停止更新位置，这可以防止您的设备在移动时不断更改窗口以使您的位置居中(如果您希望它以其他方式运行，您可以省略它)

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    manager.stopUpdatingLocation()

    从刚刚定义的userLocatin获取用户坐标：

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    let coordinations = CLLocationCoordinate2D(latitude: userLocation.coordinate.latitude,longitude: userLocation.coordinate.longitude)

    定义你想要你的地图缩放的方式：

    let span = MKCoordinateSpanMake(0.2,0.2)
    结合这两个来获得区域：

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    let region = MKCoordinateRegion(center: coordinations, span: span)//this basically tells your map where to look and where from what distance

    现在设置区域并选择是否要使用动画去那里

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    mapView.setRegion(region, animated: true)

    关闭你的功能
    }

    从您的按钮或您想要将locationManagerDeleget设置为self的其他方式

    现在允许显示位置

    指定准确性

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    locationManager.desiredAccuracy = kCLLocationAccuracyBest

    授权：

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     locationManager.requestWhenInUseAuthorization()

    为了能够授权位置服务，您需要将这两行添加到您的plist

    enter image description here

    获取位置：

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    locationManager.startUpdatingLocation()

    向用户显示：

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    mapView.showsUserLocation = true

    这是我的完整代码：

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    import UIKit
    import MapKit
    import CoreLocation

    class ViewController: UIViewController, CLLocationManagerDelegate {

        @IBOutlet weak var mapView: MKMapView!

        var locationManager = CLLocationManager()


        override func viewDidLoad() {
            super.viewDidLoad()
            // Do any additional setup after loading the view, typically from a nib.
        }

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


        @IBAction func locateMe(sender: UIBarButtonItem) {
            locationManager.delegate = self
            locationManager.desiredAccuracy = kCLLocationAccuracyBest
            locationManager.requestWhenInUseAuthorization()
            locationManager.startUpdatingLocation()

            mapView.showsUserLocation = true

        }

        func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
            let userLocation:CLLocation = locations[0] as CLLocation

            manager.stopUpdatingLocation()

            let coordinations = CLLocationCoordinate2D(latitude: userLocation.coordinate.latitude,longitude: userLocation.coordinate.longitude)
            let span = MKCoordinateSpanMake(0.2,0.2)
            let region = MKCoordinateRegion(center: coordinations, span: span)

            mapView.setRegion(region, animated: true)

        }
    }

    Swift 3.0

    如果您不想在地图中显示用户位置，但只想将其存储在firebase或其他地方，请按照以下步骤操作：

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    import MapKit
    import CoreLocation

    现在在VC上使用CLLocationManagerDelegate，您必须覆盖下面显示的最后三个方法。您可以看到requestLocation()方法如何使用这些方法获取当前用户位置。

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    class MyVc: UIViewController, CLLocationManagerDelegate {

      let locationManager = CLLocationManager()

     override func viewDidLoad() {
        super.viewDidLoad()

        isAuthorizedtoGetUserLocation()

        if CLLocationManager.locationServicesEnabled() {
            locationManager.delegate = self
            locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
        }
    }

     //if we have no permission to access user location, then ask user for permission.
    func isAuthorizedtoGetUserLocation() {

        if CLLocationManager.authorizationStatus() != .authorizedWhenInUse     {
            locationManager.requestWhenInUseAuthorization()
        }
    }


    //this method will be called each time when a user change his location access preference.
    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
        if status == .authorizedWhenInUse {
            print("User allowed us to access location")
            //do whatever init activities here.
        }
    }


     //this method is called by the framework on         locationManager.requestLocation();
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        print("Did location updates is called")
        //store the user location here to firebase or somewhere
    }

    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        print("Did location updates is called but failed getting location \(error)")
    }

    }

    现在，您可以在用户登录您的应用后对以下电话进行编码。调用requestLocation()时，它将进一步调用上面的didUpdateLocations，您可以将该位置存储到Firebase或其他任何位置。

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    if CLLocationManager.locationServicesEnabled() {
                locationManager.requestLocation();
     }

    如果您使用的是GeoFire，那么在上面的didUpdateLocations方法中，您可以按如下方式存储位置

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    geoFire?.setLocation(locations.first, forKey: uid) where uid is the user id who logged in to the app. I think you will know how to get UID based on your app sign in implementation.

    最后但并非最不重要的，请转到您的Info.plist并启用"隐私 - 使用时的位置使用说明"。

    当您使用模拟器进行测试时，它总是为您提供一个在Simulator - > Debug - > Location中配置的自定义位置。

    相关讨论

    首先在项目中添加两个框架

    1：MapKit

    2：Corelocation(从XCode 7.2.1开始不再需要)

    在课堂上定义

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    var manager:CLLocationManager!
    var myLocations: [CLLocation] = []

    然后在viewDidLoad方法代码中这样做

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    manager = CLLocationManager()
    manager.desiredAccuracy = kCLLocationAccuracyBest
    manager.requestAlwaysAuthorization()
    manager.startUpdatingLocation()

    //Setup our Map View
    mapobj.showsUserLocation = true

    不要忘记在plist文件中添加这两个值

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    1: NSLocationWhenInUseUsageDescription

    2: NSLocationAlwaysUsageDescription
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    import CoreLocation
    import UIKit

    class ViewController: UIViewController, CLLocationManagerDelegate {

        var locationManager: CLLocationManager!

        override func viewDidLoad() {
            super.viewDidLoad()
            locationManager = CLLocationManager()
            locationManager.delegate = self
            locationManager.requestWhenInUseAuthorization()
        }

        func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
            if status != .authorizedWhenInUse {return}
            locationManager.desiredAccuracy = kCLLocationAccuracyBest
            locationManager.startUpdatingLocation()
            let locValue: CLLocationCoordinate2D = manager.location!.coordinate
            print("locations = \(locValue.latitude) \(locValue.longitude)")
        }
    }

    由于对requestWhenInUseAuthorization的调用是异步的，因此应用程序在用户授予权限或拒绝权限后调用locationManager函数。因此，在用户授予权限的情况下，将您的位置置于该函数内是正确的。这是我在其上发现的最好的教程。

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     override func viewDidLoad() {

        super.viewDidLoad()      
        locationManager.requestWhenInUseAuthorization();    
        if CLLocationManager.locationServicesEnabled() {
            locationManager.delegate = self
            locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
            locationManager.startUpdatingLocation()
        }
        else{
            print("Location service disabled");
        }
      }

    这是你的视图做的加载方法，并且在ViewController类中还包括mapStart更新方法，如下所示

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    func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {
        var locValue : CLLocationCoordinate2D = manager.location.coordinate;
        let span2 = MKCoordinateSpanMake(1, 1)    
        let long = locValue.longitude;
        let lat = locValue.latitude;
        print(long);
        print(lat);        
        let loadlocation = CLLocationCoordinate2D(
                        latitude: lat, longitude: long            

       )    

        mapView.centerCoordinate = loadlocation;
        locationManager.stopUpdatingLocation();
    }

    另外，不要忘记在项目中添加CoreLocation.FrameWork和MapKit.Framework(从XCode 7.2.1开始不再需要)

    用法：

    在课堂上定义字段

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    let getLocation = GetLocation()

    通过简单的代码在类的功能中使用：

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    getLocation.run {
        if let location = $0 {
            print("location = \(location.coordinate.latitude) \(location.coordinate.longitude)")
        } else {
            print("Get Location failed \(getLocation.didFailWithError)")
        }
    }

    类：

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    import CoreLocation

    public class GetLocation: NSObject, CLLocationManagerDelegate {
        let manager = CLLocationManager()
        var locationCallback: ((CLLocation?) -> Void)!
        var locationServicesEnabled = false
        var didFailWithError: Error?

        public func run(callback: @escaping (CLLocation?) -> Void) {
            locationCallback = callback
            manager.delegate = self
            manager.desiredAccuracy = kCLLocationAccuracyBestForNavigation
            manager.requestWhenInUseAuthorization()
            locationServicesEnabled = CLLocationManager.locationServicesEnabled()
            if locationServicesEnabled { manager.startUpdatingLocation() }
            else { locationCallback(nil) }
        }

       public func locationManager(_ manager: CLLocationManager,
                             didUpdateLocations locations: [CLLocation]) {
            locationCallback(locations.last!)
            manager.stopUpdatingLocation()
        }

        public func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
            didFailWithError = error
            locationCallback(nil)
            manager.stopUpdatingLocation()
        }

        deinit {
            manager.stopUpdatingLocation()
        }
    }

    这是一个适合我的复制粘贴示例。

    http://swiftdeveloperblog.com/code-examples/determine-users-current-location-example-in-swift/

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    import UIKit
    import CoreLocation

    class ViewController: UIViewController, CLLocationManagerDelegate {

        var locationManager:CLLocationManager!

        override func viewDidLoad() {
            super.viewDidLoad()
            // Do any additional setup after loading the view, typically from a nib.
        }

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

        override func viewWillAppear(_ animated: Bool) {
            super.viewWillAppear(animated)

            determineMyCurrentLocation()
        }


        func determineMyCurrentLocation() {
            locationManager = CLLocationManager()
            locationManager.delegate = self
            locationManager.desiredAccuracy = kCLLocationAccuracyBest
            locationManager.requestAlwaysAuthorization()

            if CLLocationManager.locationServicesEnabled() {
                locationManager.startUpdatingLocation()
                //locationManager.startUpdatingHeading()
            }
        }

        func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
            let userLocation:CLLocation = locations[0] as CLLocation

            // Call stopUpdatingLocation() to stop listening for location updates,
            // other wise this function will be called every time when user location changes.

           // manager.stopUpdatingLocation()

            print("user latitude = \(userLocation.coordinate.latitude)")
            print("user longitude = \(userLocation.coordinate.longitude)")
        }

        func locationManager(_ manager: CLLocationManager, didFailWithError error: Error)
        {
            print("Error \(error)")
        }
    }

    100％在iOS Swift 4中工作：Parmar Sajjad

    第1步：转到GoogleDeveloper Api控制台并创建您的ApiKey

    第2步：转到项目安装Cocoapods GoogleMaps pod

    第3步：转到AppDelegate.swift导入GoogleMaps和

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      func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.

        GMSServices.provideAPIKey("ApiKey")
        return true
    }

    第4步：
    导入UIKit
    导入GoogleMaps
    class ViewController：UIViewController，CLLocationManagerDelegate {

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    @IBOutlet weak var mapview: UIView!
    let locationManager  = CLLocationManager()

    override func viewDidLoad() {
        super.viewDidLoad()
        locationManagerSetting()
        // Do any additional setup after loading the view, typically from a nib.
    }

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


    func locationManagerSetting() {

        self.locationManager.delegate = self
        self.locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
        self.locationManager.requestWhenInUseAuthorization()
        self.locationManager.startUpdatingLocation()
    }
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {

        self.showCurrentLocationonMap()
        self.locationManager.stopUpdatingLocation()
    }
    func showCurrentLocationonMap() {
        let
        cameraposition  = GMSCameraPosition.camera(withLatitude: (self.locationManager.location?.coordinate.latitude)!  , longitude: (self.locationManager.location?.coordinate.longitude)!, zoom: 18)
        let  mapviewposition = GMSMapView.map(withFrame: CGRect(x: 0, y: 0, width: self.mapview.frame.size.width, height: self.mapview.frame.size.height), camera: cameraposition)
        mapviewposition.settings.myLocationButton = true
        mapviewposition.isMyLocationEnabled = true

        let marker = GMSMarker()
        marker.position = cameraposition.target
        marker.snippet ="Macczeb Technologies"
        marker.appearAnimation = GMSMarkerAnimation.pop
        marker.map = mapviewposition
        self.mapview.addSubview(mapviewposition)

    }

    }

    步骤5：打开info.plist文件并在下面添加隐私 - 使用时的位置用法说明......在主故事板文件基本名称下面

    第六步：跑

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    // its with strongboard
    @IBOutlet weak var mapView: MKMapView!

    //12.9767415,77.6903967 - exact location latitude n longitude location
    let cooridinate = CLLocationCoordinate2D(latitude: 12.9767415 , longitude: 77.6903967)
    let  spanDegree = MKCoordinateSpan(latitudeDelta: 0.2,longitudeDelta: 0.2)
    let region = MKCoordinateRegion(center: cooridinate , span: spanDegree)
    mapView.setRegion(region, animated: true)