🐛 [firebase_messaging] cannot find symbol io.flutter.plugins.firebase.messaging.FlutterFirebaseMessagingBackgroundService.setPluginRegistrant(this);

[leegiseong20030603]

I was able to find out that the FlutterFirebaseMessagingBackgroundService class exists through the autocomplete function in Android Studio... But it is generated with red code and the following error occurs when running....

Package version: firebase_messaging: ^11.2.7

Android related gradle configuration files

// android
apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
dependencies{
    implementation 'com.google.firebase:firebase-messaging'
}

// android:app
buildscript {
    repositories {
        google()
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:4.1.3'
        classpath 'com.google.gms:google-services:4.3.10'
    }
}

==================================================== ======Error

 cannot find symbol
        io.flutter.plugins.firebase.messaging.FlutterFirebaseMessagingBackgroundService.setPluginRegistrant(this);
                                                                                       ^
  symbol: method setPluginRegistrant(Application)
  location: class FlutterFirebaseMessagingBackgroundService

[darshankawar]

@leegiseong20030603
Can you provide flutter doctor -v ? From your screenshot, I see the PluginRegistrantCallback class seems to deprecated. If so, what does it show to replicate with ? Can you try with new one and see if it helps ?

Also check this similar issue and see if it helps. #2077

[leegiseong20030603]

@darshankawar
Sorry for the late reply....
Here is my current version and status.

That method didn't solve my issue

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 2.8.1, on macOS 11.6 20G165 darwin-x64, locale ko-KR)
[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 13.0)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2021.2)
[✓] VS Code (version 1.66.2)
[✓] Connected device (3 available)

• No issues found!

[darshankawar]

@leegiseong20030603
Are you importing all the required packages correctly that requires cannot find symbol io.flutter.plugins.firebase.messaging.FlutterFirebaseMessagingBackgroundService

[leegiseong20030603]

@darshankawar
io.flutter.plugins.firebase.messaging.FlutterFirebaseMessagingBackgroundService
It shows in the preview function of android studio that there is a Firebase Cloud Messaging package, but an error occurs saying that there is no function of that class.

[darshankawar]

@leegiseong20030603
Can you provide complete code sample and when are you trying to use this ?

[google-oss-bot]

Hey @leegiseong20030603. 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!

[google-oss-bot]

Since there haven't been any recent updates here, I am going to close this issue.

@leegiseong20030603 if you're still experiencing this problem and want to continue the discussion just leave a comment here and we are happy to re-open this.