Different google maps api key for each flavor build on Flutter iOS

Question

As i understand from google_maps_flutter docs we need to declare google maps api key inside AppDelegate.swift like this:

GMSServices.provideAPIKey("YOUR KEY HERE")

is there a way to use different api key for each flavor build? like for example different api key for dev and production

Answer 1

I used Active Compilation Conditions to solve this:

1. In Xcode, go to PROJECT -> Runner -> Build Settings and search for 'active compilation conditions'. Add a text value for each different flavor.

2. in AppDelegate.swift, add preprocessor conditional statements to execute different code for different flavors, in our case providing a different API key:

   import UIKit
   import Flutter
   import GoogleMaps
   
   @UIApplicationMain
   @objc class AppDelegate: FlutterAppDelegate {
     override func application(
       _ application: UIApplication,
       didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
     ) -> Bool {
   
       // Using active compilation conditions to provide the right API key for the right flavor.
       #if DEV
           GMSServices.provideAPIKey("<API key for DEV project>")
       #elseif QA
           GMSServices.provideAPIKey("<API key for QA project>")
       #elseif PROD
           GMSServices.provideAPIKey("<API key for PROD project>")
       #endif
   
       GeneratedPluginRegistrant.register(with: self)
       return super.application(application, didFinishLaunchingWithOptions: launchOptions)
     }
   }