无法在 google 地图 ios sdk 上获取当前位置 (GPS)

Question

我的目标是将相机移动到用户的当前位置，但不知何故它一直显示一般地图，我尝试了很多方法但似乎不会移动到用户的当前位置

截图

当前代码

import UIKit
import GoogleMaps


class ParcelViewController: UIViewController, GMSMapViewDelegate {


    @IBOutlet var mapView: GMSMapView!

    let locationManager = CLLocationManager()

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

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

}


// Mark: -CLLocationManagerDelegate
extension ParcelViewController: CLLocationManagerDelegate {

    func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
        if status == .AuthorizedWhenInUse {
            locationManager.startUpdatingLocation()

            mapView.myLocationEnabled = true
            mapView.settings.myLocationButton = true
        }
    }

    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        if let location = locations.first {
            mapView.camera = GMSCameraPosition(target: location.coordinate, zoom: 15, bearing: 0, viewingAngle: 0)

            locationManager.stopUpdatingLocation()

        }
    }
}

Answer 1

确保您已正确导入和注册 GoogleMapsAPI 密钥：这是在 AppDelegate

中完成的

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    // Override point for customization after application launch.
    GMSServices.provideAPIKey("[your key from Google API]")

    return true
}

之后，ViewController 文件中加载函数的某些位置：

let center = CLLocationCoordinate2D(latitude: location.coordinate.latitude, longitude: location.coordinate.longitude)      
let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.1, longitudeDelta: 0.1))
self.map.setRegion(region, animated: true)

请注意：Google 地图 API 不需要用户授权即可使用地图，但是，CLLLocationManager 需要。在加载时，您应该检查是否设置了权限，然后从那里开始。

Answer 2

您是否在 .plist 文件中添加了 NSLocationAlwaysUsageDescription 或 NSLocationWhenInUseUsageDescription（在您的情况下是这个）键。因为如果请求授权的警报视图没有显示这可能是问题所在。

Answer 3

首先您需要设置这些基本步骤：

第 1 步：将此导入您的控制器 class

import CoreLocation

第 2 步：将此代表添加到您的 class 文件

class Your_controller: CLLocationManagerDelegate

第 3 步：在上面为已查看的负载声明此内容

var locationManager = CLLocationManager()

第 4 步：将此代码添加到您的 viewdidload 方法中

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


if CLLocationManager.locationServicesEnabled() {
  switch (CLLocationManager.authorizationStatus()) {
    case .notDetermined, .restricted, .denied:
      print("No access")
    case .authorizedAlways, .authorizedWhenInUse:
      print("Access")
  }
} else {
  print("Location services are not enabled")
}

第 5 步：在 viewdidload 方法下方添加此代码

func showCurrentLocation() {
    mapView.settings.myLocationButton = true
    let locationObj = locationManager.location as! CLLocation
    let coord = locationObj.coordinate
    let lattitude = coord.latitude
    let longitude = coord.longitude
    print(" lat in  updating \(lattitude) ")
    print(" long in  updating \(longitude)")

    let center = CLLocationCoordinate2D(latitude: locationObj.coordinate.latitude, longitude: locationObj.coordinate.longitude)
    let marker = GMSMarker()
    marker.position = center
    marker.title = "current location"
    marker.map = mapView
    let camera: GMSCameraPosition = GMSCameraPosition.camera(withLatitude: lattitude, longitude: longitude, zoom: Float(zoomLevel))
    self.mapView.animate(to: camera)

}

第 6 步：为您的 plist 文件添加权限

密钥 - "Privacy - Location When In Use Usage Description"

值 - "This app needs access to your location"

第 7 步：运行您在硬件设备上的应用程序

第八步：当你想显示当前位置时调用这个方法即可。

self.showCurrentLocation()

无法在 google 地图 ios sdk 上获取当前位置 (GPS)

Cant get current location (GPS) on google maps ios sdk

google-maps

ios

google-maps-sdk-ios

swift