[firebase_analytics]: Crashlytics doesn't track screen view breadcrumbs

[TatsuUkraine]

Is there an existing issue for this?

• I have searched the existing issues.

Which plugins are affected?

Analytics, Crashlytics

Which platforms are affected?

Android, iOS (not sure about iOS since some reports containing breadcrumbs)

Description

It seems logScreenView method doesn't track navigation changes. In the crashlytics reports breadcrumbs tab is empty

Reproducing the issue

FirebaseAnalytics.instance.logScreenView(screenName: 'some_screen_name');
FirebaseCrashlytics.instance.recordError('Some message', null);

Firebase Core version

2.29.0

Flutter Version

3.19.6

Relevant Log Output

No response

Flutter dependencies

Expand Flutter dependencies snippet

Replace this line with the contents of your `flutter pub deps -- --style=compact`.

Additional context and comments

It seems Dart plugin uses following code to log screen views

_delegate.logEvent(
      name: 'screen_view',
      parameters: filterOutNulls(<String, Object?>{
        _SCREEN_CLASS: screenClass,
        _SCREEN_NAME: screenName,
        if (parameters != null) ...parameters,
      }),
      callOptions: callOptions,
    );

Where _SCREEN_CLASS is screen_class and _SCREEN_NAME is screen_name

While according to the documentation it should be

await FirebaseAnalytics.instance.logEvent(
  name: 'screen_view',
  parameters: {
    'firebase_screen': screenName,
    'firebase_screen_class': screenClass,
  },
);

Firebase doc - https://firebase.google.com/docs/analytics/screenviews?authuser=0&hl=en#manually_track_screens
GA4 doc - https://support.google.com/analytics/answer/9234069#screen_view

Which kind of strange, since native SDK docs say that the current code in logScreenView is accurate 🤔

[TarekkMA]

Hello @TatsuUkraine, Thank you for reporting this issue. Can you please try and see if the following code would work?

await FirebaseAnalytics.instance.logEvent(
  name: 'screen_view',
  parameters: {
    'firebase_screen': screenName,
    'firebase_screen_class': screenClass,
  },
);

[TatsuUkraine]

@TarekkMA it seems it's not, I'm getting following message on Android
E/FA (31087): Name starts with reserved prefix. Type, name: event param, firebase_screen

[TarekkMA]

I guess firebase_screen and firebase_screen_class is for web only. Since the value of the AnalyticsParameterScreenName in swift and FirebaseAnalytics.Param.SCREEN_NAME for java/kotlin doesn't have the firebase prefix.

[TatsuUkraine]

maybe, but it's quite confusing, since GA4 says it's for app, and Firebase docs having exact this codesnipet for Flutter

[TatsuUkraine]

[TatsuUkraine]

still trying to test it on iOS to understand if it's Android only

[TatsuUkraine]

ok, so it seems the issue is with com.google.gms.google-services.
GA doesn't work when app uses google-services v4.4.x, I see message like Missing google_app_id. in console.

Downgrading it to 4.3.x seems fixes GA reports as well as breadcrumbs in Crashlytics

P.S still trying to confirm that breadcrumbs working on iOS though

[TatsuUkraine]

so on iOS this code send screen view events, but doesn't record screen name

await FirebaseAnalytics.instance.logEvent(
  name: 'screen_view',
  parameters: {
    'firebase_screen': screenName,
    'firebase_screen_class': screenClass,
  },
);

but logScreenView seems works fine in my debug code 🤔 need more time to track our prod logs to understand if works stable enough, since for now I see that not all of our error events having breadcrumbs from some reason

[TarekkMA]

Thank you for the update

[google-oss-bot]

Hey @TatsuUkraine. We need more information to resolve this issue but there hasn't been an update in 7 weekdays. I'm marking the issue as stale and if there are no new updates in the next 7 days I will close it automatically.

If you have more information that will help us get to the bottom of this, just add a comment!