Google 地图 iOS SDK

Question

这是我的代码

import UIKit    
import GooglePlaces  
import GoogleMaps  
@UIApplicationMain  

class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

   GMSPlacesClient.provideAPIKey("************************")
   GMSServices.provideAPIKey("************************")

    return true
}

但我仍然遇到异常

Terminating app due to uncaught exception 'GMSServicesException', reason: 'Google Maps SDK for iOS must be initialized via [GMSServices provideAPIKey:...] prior to use'

还有其他原因吗，帮我解决一下

Answer 1

ViewController class 在 appDelegate 之前调用。因此，APIKey 未启动。找到这个后，我在 appDelegate 中启动 viewController。

Answer 2

您必须在 App delegate 中添加 API Key 并在 ViewController

中实现 GoogleMap delegate

import UIKit
import GoogleMaps

let googleApiKey = "<YOUR API Key HERE>"

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        GMSServices.provideAPIKey(googleApiKey)
        return true
    }
//other methods
}

你的ViewController应该是

import UIKit
import GoogleMaps

class ViewController: UIViewController, CLLocationManagerDelegate {

    private let locationManager = CLLocationManager()
    @IBOutlet weak var mapView: GMSMapView!

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

    // MARK: - CLLocationManagerDelegate
    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {

        guard status == .authorizedWhenInUse else {
            return
        }
        locationManager.startUpdatingLocation()
        mapView.isMyLocationEnabled = true
        mapView.settings.myLocationButton = true
    }

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

        guard let location = locations.first else {
            return
        }

        mapView.camera = GMSCameraPosition(target: location.coordinate, zoom: 15, bearing: 0, viewingAngle: 0)
        locationManager.stopUpdatingLocation()
    }
}

PS: Make sure you don't forget these important steps.

转到 Google Developers Console 并创建应用和 API 密钥
为 Google 启用 APIs iOS
在.plist文件中添加隐私权限

<key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
    <string>Application requires user’s location information while the app is running in the foreground.</string>
    <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>

Google 地图 iOS SDK

Google Maps iOS SDK

ios

swift

sdk

google-maps-sdk-ios