Flutter for Firebase 中使用 buildTypes 的多个构建环境（多个 google-services.json）

Question

I created multiple firebase project in one app to separate the development and production environment, so now I have 2 different generated google-services.json. I want to be able to run/build using a specific environment by specifying buildTypes as mentioned in this article on step 3 . So my app folder below will follow this article.

NOTE: Why don't I use flavor? Because I already use command arguments (--dart-define).

This is snippet of my buildTypes:

buildTypes {
    debug {
        signingConfig signingConfigs.debug
    }
    release {
        signingConfig signingConfigs.release
    }
}

I delete apply plugin: 'com.google.gms.google-services' as stated in this documentation .

This is my app folder:

I run my project using debug build ( flutter run --debug ) but I got this error:

Unhandled Exception: [core/not-initialized] Firebase has not been correctly initialized. Have you added the "google-services.json" file to the project?

I checked this documentation page on firebase flutter site, it mentioned:

await Firebase.initializeApp(
    name: 'SecondaryApp',
    options: const FirebaseOptions(
        appId: 'my_appId',
        apiKey: 'my_apiKey',
        messagingSenderId: 'my_messagingSenderId',
        projectId: 'my_projectId'
    )
);

is my choice only passing all required data via command arguments using this approach? I'm afraid it has limitations as I use other Firebase services. Any insights would be nice, thanks.

Answer 1

Your google-services.json file is under the incorrect folder. It should be in android/app. Not android/app/src/debug. You can follow this official document .

Once your Android app has been registered, download the configuration file from the Firebase Console (the file is called google-services.json). Add this file into the android/app directory within your Flutter project.