CrashlyticsListener not called

Question

I am using this code to track when the app has crashed:

val core = CrashlyticsCore
                .Builder()
                .listener {
                    Log.d("***", "Crash happened")
                }
                .build()
        val crashlyticsKit = Crashlytics
                .Builder()
                .core(core)
                .build()
        // Initialize Fabric with the debug-location_inactive crashlytics.
        Fabric.with(context, crashlyticsKit)

I am testing it with throw NullPointerException() and with Crashlytics.getInstance().crash(). None of them calls listener. When the app starts again, this is in the logs:

I/CrashlyticsCore: Initializing Crashlytics 2.6.1.23
I/CrashlyticsInitProvider: CrashlyticsInitProvider initialization successful
D/FirebaseApp: com.google.firebase.crash.FirebaseCrash is not linked. Skipping initialization.
I/CrashlyticsCore: Crashlytics report upload complete: SOME-LETTERS-AND-NUMBERS

What am I doing wrong?

EDIT I used code from How to show a Dialog after crash by using Crashlytics? as a template for mine, but it seems that the API has slightly changed (in this answer, it instantiates as a class, but now it is a listener, see docs)

Answer 1

By default, Firebase Crashlytics is using content provider hack to automatically initialize itself (com.crashlytics.android.CrashlyticsInitProvider is injected into merged AndroidManifest).

According to the documentation automatic initialization can be overridden with meta-data flag:

<manifest>
    <application>

        <meta-data
            android:name="firebase_crashlytics_collection_enabled"
            android:value="false" />

    </application>
</manifest>

Now calling Fabric.with(context, crashlyticsKit) will actually initialize sdk and should trigger listener correctly.