FirebaseApp not initializing despite FirebaseApp.initializeApp() being called in Application class

Question

I am creating an Android application and I\'m currently trying to implement user authentication using Firebase. As far as I can tell, my app is connected to my Firebase serv

Answer 1

I encountered this problem after I deleted and re-cloned my app and forgot to include the google-services.json inside the app module. After I re-added it, the problem went away. Nevertheless, you should init the context inside your custom Application class:

class MyApplication : Application() {
    override fun onCreate() {
        super.onCreate()
        FirebaseApp.initializeApp(this)
    }
}

<manifest 
    package="your.app">

    <application
        android:name=".MyApplication"

Answer 2

Update 2019 : If you update your Firebase dependencies to latest then you should update Google play services as well.

During the writing of this answer I had updated all my Firebase libs to 17.0.+ but my Google play service was still pointing at 4.1.0.

Updating play service version to 4.3.0(Latest) fixed it for me.