如何存储用户的当前位置,并在地图上显示该位置?
我可以在地图上显示预定义的坐标,只是不知道如何从设备接收信息。
我也知道我必须添加一些项目到Plist。我该怎么做呢?
如何存储用户的当前位置,并在地图上显示该位置?
我可以在地图上显示预定义的坐标,只是不知道如何从设备接收信息。
我也知道我必须添加一些项目到Plist。我该怎么做呢?
当前回答
首先导入Corelocation和MapKit库:
import MapKit
import CoreLocation
从CLLocationManagerDelegate继承到我们的类
class ViewController: UIViewController, CLLocationManagerDelegate
创建一个locationManager变量,这将是你的位置数据
var locationManager = CLLocationManager()
创建一个函数来获取位置信息,具体语法如下:
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
在函数中为用户的当前位置创建一个常量
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,这可以防止你的设备在移动时不断地改变窗口以使你的位置居中(如果你想让它发挥其他作用,你可以省略这个)
manager.stopUpdatingLocation()
从刚刚定义的userLocatin获取用户坐标:
let coordinations = CLLocationCoordinate2D(latitude: userLocation.coordinate.latitude,longitude: userLocation.coordinate.longitude)
定义你想要缩放的地图:
let span = MKCoordinateSpanMake(0.2,0.2) 将这两个组合起来得到region:
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,并选择是否希望它与动画一起去那里
mapView.setRegion(region, animated: true)
关闭函数 }
从你的按钮或者其他你想要设置locationManagerDeleget为self的方式
现在允许显示位置
指定精度
locationManager.desiredAccuracy = kCLLocationAccuracyBest
授权:
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
位置:
locationManager.startUpdatingLocation()
显示给用户:
mapView.showsUserLocation = true
这是我的完整代码:
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)
}
}
其他回答
用法:
在类中定义字段
let getLocation = GetLocation()
通过简单的代码在类的函数中使用:
getLocation.run {
if let location = $0 {
print("location = \(location.coordinate.latitude) \(location.coordinate.longitude)")
} else {
print("Get Location failed \(getLocation.didFailWithError)")
}
}
类:
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()
}
}
不要忘记在info.plist中添加“NSLocationWhenInUseUsageDescription”。
首先在项目中添加两个框架
1:地
2:共重定位(从XCode 7.2.1开始不再需要)
在类中定义
var manager:CLLocationManager!
var myLocations: [CLLocation] = []
然后在viewDidLoad方法中编写此代码
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
1: NSLocationWhenInUseUsageDescription
2: NSLocationAlwaysUsageDescription
要获取用户的当前位置,你需要声明:
let locationManager = CLLocationManager()
在viewDidLoad()中,你必须实例化CLLocationManager类,就像这样:
// 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,你可以获得用户当前的位置坐标:
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
guard let locValue: CLLocationCoordinate2D = manager.location?.coordinate else { return }
print("locations = \(locValue.latitude) \(locValue.longitude)")
}
在信息中。plist你必须添加NSLocationAlwaysUsageDescription 和你的自定义警报消息像;AppName(演示应用程序)想使用您的当前位置。
100%工作在iOS Swift 4: Parmar Sajjad
步骤1:进入GoogleDeveloper Api控制台并创建你的ApiKey
步骤2:Goto项目安装Cocoapods GoogleMaps pod
步骤3:Goto AppDelegate.swift导入GoogleMaps和
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
GMSServices.provideAPIKey("ApiKey")
return true
}
步骤4: 进口UIKit 进口GoogleMaps 类ViewController: UIViewController, CLLocationManagerDelegate {
@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)
}
}
第五步:打开信息。plist文件和添加下面的隐私-使用时的位置使用说明......在主故事板文件基名下面
第六步:运行
NSLocationWhenInUseUsageDescription =请求权限使用位置服务时,应用程序是在后台。在你的plist文件中。
如果这是工作,然后请投票的答案。