Support of non-AndroidX firebase libs

[GaRaOne]

Please fill in the following fields:

Pre-built SDK from the website or open-source from this repo: prebuild
Firebase C++ SDK version: see text
Firebase plugins in use (Auth, Database, etc.): ads, analytics, messaging
Additional SDKs you are using (Facebook, AdMob, etc.): Qt
Platform you are using the C++ SDK on (Mac, Windows, or Linux): all
Platform you are targeting (iOS, Android, and/or desktop): iOS and Android

Please describe the issue here:

We use C++/Qt to Build an App for mobiles. Because of Qt we are limited to non Jetpack/AndroidX libs.

So we use every firebase lib before https://developers.google.com/android/guides/releases#june_17_2019

implementation "com.google.firebase:firebase-core:16.0.9"
implementation "com.google.android.gms:play-services-base:16.1.0"
implementation 'com.google.firebase:firebase-ads:17.2.1'
implementation "com.google.firebase:firebase-analytics:16.5.0"

implementation 'com.google.firebase:firebase-messaging:18.0.0'
implementation 'com.google.firebase.messaging.cpp:firebase_messaging_cpp@aar'

implementation 'com.android.support:multidex:1.0.3'
implementation 'com.android.support:appcompat-v7:27.1.1'

This libs was used as default in firebase_cpp 6.1.0.

Before we used always the latest version von firebase_cpp (6.14.1). Now we start to implement FCM into our app and get the following runtime error on Android:

W System.err: java.lang.NoSuchMethodError: no non-static method "Lcom/google/firebase/messaging/FirebaseMessaging;.deliveryMetricsExportToBigQueryEnabled()Z"
W System.err: 	at org.qtproject.qt5.android.QtNative.startQtApplication(Native Method)
W System.err: 	at org.qtproject.qt5.android.QtNative$7.run(QtNative.java:374)
W System.err: 	at org.qtproject.qt5.android.QtThread$1.run(QtThread.java:61)
W System.err: 	at java.lang.Thread.run(Thread.java:761)
E firebase: method_ids[i] || (method.optional == kMethodOptional)
F firebase: Unable to find Method com/google/firebase/messaging/FirebaseMessaging.deliveryMetricsExportToBigQueryEnabled (signature '()Z', instance).  Please verify the AAR which contains the com/google/firebase/messaging/FirebaseMessaging class is included in your app.

So now the latest working firebase_cpp version is 6.8.0 because in 6.9.0 following feature was introduced for FCM:

"(Android): Added the option to enable or disable message delivery metrics export to BigQuery. This functionality is currently only available on Android. Stubs are provided on iOS for cross platform compatibility."

So we have the following questions:

1: Which Version of firebase_cpp is the better choice for our limitations, 6.1.0 (non-AndroidX libs as default) or 6.8.0 (latest running)?

2: Is it possible and usefull to support non-AndroidX firebase in latest firebase_cpp. Because Qt seems not to support it in nearer future ( https://bugreports.qt.io/browse/QTBUG-73904 )

Please answer the following, if applicable:

What's the issue repro rate? 100%

[chkuang-g]

Hi @GaRaOne

If I understand it correctly.

• You were using firebase_cpp 6.1.0 and it worked with no issue
• You upgraded to firebase_cpp 6.14.1. It worked fine until you started to implement FCM and encounter java.lang.NoSuchMethodError
• You downgraded to firebase_cpp 6.8.0 and it worked fine again.

I think firebase_cpp started to depend on Android libraries using AndroidX starting from 6.2.0, given the release time.
https://firebase.google.com/support/release-notes/cpp-relnotes
https://firebase.google.com/support/release-notes/android

Since 6.14.1 worked for you without Messaging, it does not seems to be a Jackpack/AndroidX issue. If you use Jetifier while building Android build, it should help to migrate any Android library to AndroidX, potentially Qt as well. Could you give us a bit more clue why you think Qt cannot be used with Jackpack/AndroidX, ex. any error in log while building apk?

I think the issue you are experiencing is

Unable to find Method com/google/firebase/messaging/FirebaseMessaging.deliveryMetricsExportToBigQueryEnabled (signature '()Z', instance).  Please verify the AAR which contains the com/google/firebase/messaging/FirebaseMessaging class is included in your app.

It seems to be some build configuration issue. Could you provide more information about this. Ex.

• As mentioned, is there any error log related to messaging when you are building your apk?
• Could you try c++ quickstart and follow the instructions and see you are experiencing the same issue with 6.14.1 (or even later version like 6.15.2)?

Thank you
Shawn

[google-oss-bot]

Hey @GaRaOne. We need more information to resolve this issue but there hasn't been an update in 5 weekdays. I'm marking the issue as stale and if there are no new updates in the next 5 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.

@GaRaOne 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.