ios - Google Maps SDK 在物理设备中返回 iOS 错误，但在模拟器中工作正常

Question

我正在使用 Xcode 8 和 Swift 3，并尝试使用适用于 iOS 的 Google Maps SDK。我编译了我的代码并在 iOS 模拟器中运行它，它运行得很好。但是，在我的实体 iPad 和 iPhone 中，该应用程序无法运行并显示错误消息:

provideAPIKey: should be called at most once

<小时/>

我已在 Google 的 API 控制台中启用了 API，并尝试仅限制 iOS 的 API key ，但没有任何效果。

注意:我在代码中添加了注释来解释这些功能。

 override func viewDidLoad() {
    super.viewDidLoad()

    GMSServices.provideAPIKey("AIzaSyDpyBvqZpZnRZIf-m1HNuh_vjdX3GUlmWM")

//这是错误

    let camera = GMSCameraPosition.camera(withLatitude: (self.locationManager.location?.coordinate.latitude)!, longitude: (self.locationManager.location?.coordinate.longitude)!, zoom: 15.0)

    let mapView = GMSMapView.map(withFrame: .zero, camera: camera)
    ********************************************************************


    self.mapView.isMyLocationEnabled = true

    self.mapView.camera = camera


    locationManager.desiredAccuracy = kCLLocationAccuracyKilometer
    // A minimum distance a device must move before update event generated
    locationManager.distanceFilter = 500
    // Request permission to use location service
    locationManager.requestWhenInUseAuthorization()
    // Request permission to use location service when the app is run
    locationManager.requestAlwaysAuthorization()
    // Start the update of user's location
    locationManager.startUpdatingLocation()




    let latitudmia = (locationManager.location?.coordinate.latitude)!
    let longitudmia = (locationManager.location?.coordinate.longitude)!

//解析 Json 并用数据放置标记

//我正在使用 swiftyJson 解析 JSON 并通过 for 循环获取数据

     let urlStringdatos = "http://softkitect.tech/sandbox/maps/greetings3.php"



    let url=URL(string: urlStringdatos)!

    let session = URLSession.shared.dataTask(with: url){
        (data,response,error) in


        guard let data = data else{
            print("data was nil?")
            return
        }


        let json = JSON(data: data)
        for index in 0...19 {


            let nombres = json[index]["title"].string
            let direccion = json[index]["descripcion"].string
            let latp = json[index]["latitud"].string
            let lngp = json[index]["longitud"].string




            if(nombres?.isEmpty == false && direccion?.isEmpty == false ){

                let latitudlug = Double(latp!)
                let lagitudlug = Double(lngp!)

                DispatchQueue.main.async
                    {




                        // Creates a marker in the center of the map.
                        let marker = GMSMarker()
                        marker.position = CLLocationCoordinate2D(latitude: lagitudlug!, longitude: latitudlug!)
                        marker.title = nombres
                        print("MArcador latylong")
                        print(latitudlug!)
                         print(lagitudlug!)
                        marker.snippet = direccion
                        marker.map = self.mapView
                        print("MArcador Puestofinal")
                }

            }else{print("no hay lugares")}

        }



        // print(json["results"][0]["name"])
        //print(json["results"]["geometry"][0]["location"]["lat"].string)

    }
    session.resume()


}

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


    let userLocation:CLLocation = locations[0] as! CLLocation
    let longitude = userLocation.coordinate.longitude
    let latitude = userLocation.coordinate.latitude
    //Do What ever you want with it





    print(userLocation.coordinate.longitude)
    print(userLocation.coordinate.latitude)
}

Answer 1

我认为您应该按照此处有关如何使用 Google Maps API 的说明进行操作:https://developers.google.com/maps/documentation/ios-sdk/start?hl=en-us

Add your API key to your AppDelegate.swift as follows:

Add the following import statement:

import GoogleMaps 

Add the following to your application(_:didFinishLaunchingWithOptions:) method, replacing YOUR_API_KEY with your API key:

GMSServices.provideAPIKey("YOUR_API_KEY") 

If you are also using the Places API, add your key again as shown here:

GMSPlacesClient.provideAPIKey("YOUR_API_KEY")

请将您的 provideAPIKey 方法调用放入应用委托(delegate)中的 application(_:didFinishLaunchingWithOptions:) 中。

此外，由于错误表明 provideAPIKey 只能调用一次，因此请在您的项目中搜索 provideAPIKey 并确保只有一次调用，并且该调用位于 application(_:didFinishLaunchingWithOptions:).