I'm trying to log user events using firebase_analytics I followed the documentation

this my main() method

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  await Firebase.initializeApp(
    name: "test_app",
    options: DefaultFirebaseOptions.currentPlatform,
  );

  runApp(const MyApp());
}

This is MyApp class

class MyApp extends StatelessWidget {
  const MyApp({super.key});
  static FirebaseAnalytics analytics = FirebaseAnalytics.instance;
  static FirebaseAnalyticsObserver observer =
      FirebaseAnalyticsObserver(analytics: analytics);

  @override
  Widget build(BuildContext context) {
    return 
        ...
        navigatorObservers: <NavigatorObserver>[observer],
        routes: {
          '/': (context) => const MainScreen(),
          'product': (context) => ProductScreen(
                analytics: analytics,
                observer: observer,
              ),
        },
      ),
    );
  }
}

And this is how I log event

body: TextButton.icon(
      onPressed: () async {
        await analytics.logEvent(
          name: 'test_event',
          parameters: <String, dynamic>{
            'string': 'string',
          },
        );
      },
      icon: const Icon(Icons.analytics),
      label: const Text("Test Analytics")),

why do I end up with this error

W/FA      ( 7136): '' is an invalid event name.

CodePudding user response：

if you haven't imported Firebase Analytics, import

import 'package:firebase_analytics/firebase_analytics.dart';

first in your main file.

If the issue still persists, run the following commands:

cd android
./gradlew clean
./gradlew build
flutter clean
flutter pub get

CodePudding user response：

I tried this and it works. Let me know if it works or what error you are facing.

final FirebaseAnalytics _analytics = FirebaseAnalytics(); 

Future sendAnalyticsEvent({String? aString}) async {
      await _analytics.logEvent(
        name: 'test_event',
        parameters: <String, dynamic>{
          'userData': aString,
        },
      );
  }

and try to call this sendAnalyticsEvent function whenever you want.