Exception:Google Maps SDK for iOS must be initialized via [GMSServices provideAPIKey:…] prior to use

Question

I am trying to implement Google Maps SDK into my project using Swift 2.0. I follow this but when running this, my app is getting the following error:

2015-08         


        

Answer 1

XCODE 12.0.1, Swift 5

I was applying constraints to Google Map View by initialising GMSMapView like this:-

private var googleMapsView : GMSMapView = {
    let mainView = GMSMapView()
    mainView.translatesAutoresizingMaskIntoConstraints = false
    mainView.isMyLocationEnabled = true
    return mainView
}()

& I was getting this same error, so I tried this making it a lazy property:-

lazy private var googleMapsView : GMSMapView = {
    let mainView = GMSMapView()
    mainView.translatesAutoresizingMaskIntoConstraints = false
    mainView.isMyLocationEnabled = true
    return mainView
}()

& voila! It worked like a charm.

Answer 2

Just adding to Rajasekaran Gopal

Remember to add

import GoogleMaps
import GooglePlaces

then

GMSPlacesClient.provideAPIKey("Your key")
GMSServices.provideAPIKey("Your key")

in didFinishLaunchingWithOptions

Answer 3

Here is a Google Maps tutorial for Swift:

http://www.appcoda.com/google-maps-api-tutorial/

Below is quoted from Google Maps Documentation:

Step 5: Get an iOS API key

Using an API key enables you to monitor your application's API usage, and ensures that Google can contact you about your application if necessary. The key is free, you can use it with any of your applications that call the Google Maps SDK for iOS, and it supports an unlimited number of users. You obtain an API key from the Google Developers Console by providing your application's bundle identifier.

If your project doesn't already have a key for iOS applications, follow these steps to create an API key from the Google Developers Console:

1. In the sidebar on the left, select Credentials.
2. If your project doesn't already have an iOS API key, create one now by selecting Add credentials > API key > iOS key.
3. In the resulting dialog, enter your app's bundle identifier. For example: com.example.hellomap.

4. Click Create.

   Your new iOS API key appears in the list of API keys for your project. An API key is a string of characters, something like this:

   AIzaSyBdVl-cTICSwYKrZ95SuvNw7dbMuDt1KG0

5. Add your API key to your AppDelegate.m as follows:

   • Add the following import statement:

   @import GoogleMaps;

   • Add the following to your application:didFinishLaunchingWithOptions: method, replacing API_KEY with your API key:

   [GMSServices provideAPIKey:@"API_KEY"];

Source

Answer 4

You are skipping provideAPIKey in your AppDelegate check project

Your_PROJECT -> ios -> Runner -> AppDelegate.m

Replace your file code with below snippet add your APIKEY

#include "AppDelegate.h"
#include "GeneratedPluginRegistrant.h"
#import "GoogleMaps/GoogleMaps.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application
    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  [GMSServices provideAPIKey:@"GOOGLE_API_KEY"];
  [GeneratedPluginRegistrant registerWithRegistry:self];
  return [super application:application didFinishLaunchingWithOptions:launchOptions];
}
@end

Google Maps SDK for iOS must be initialized via [GMSServices provideAPIKey:...]

Answer 5

If you already set GMSMapView class to your view in interface builder, make GMSServices.provideAPIKey("API key") in initialization methods of viewController which contains GMSMapView.

Answer 6

I just had the same problem. I created a GMSMapView object and it was initialized before maybe the api key could be read. So I moved it inside the viewDidLoad method and problem solved.

Before :

class ViewController: ..... {

let mapView = GMSMapView()

After :

class ViewController: ..... {

var mapView : GMSMapView?

override viewDidLoad(){
    mapView = GMSMapView()