Android Targeting S+ requires one of FLAG_IMMUTABLE or FLAG_MUTABLE specified when creating PendingIntent

[Franjoo]

App crashes after fcm background notification was received.

Exception:

E/AndroidRuntime: FATAL EXCEPTION: Firebase-FcmMessageHandler
    Process: com.example.game, PID: 24585
    java.lang.IllegalArgumentException: com.example.game: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent.
    Strongly consider using FLAG_IMMUTABLE, only use FLAG_MUTABLE if some functionality depends on the PendingIntent being mutable, e.g. if it needs to be used with inline replies or bubbles.
        at android.app.PendingIntent.checkFlags(PendingIntent.java:375)
        at android.app.PendingIntent.getActivityAsUser(PendingIntent.java:458)
        at android.app.PendingIntent.getActivity(PendingIntent.java:444)
        at android.app.PendingIntent.getActivity(PendingIntent.java:408)
        at com.google.firebase.messaging.zza.zzh(Unknown Source:124)
        at com.google.firebase.messaging.FirebaseMessagingService.zzd(Unknown Source:57)
        at com.google.firebase.iid.zzc.run(Unknown Source:2)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
        at com.google.android.gms.common.util.concurrent.zza.run(com.google.android.gms:play-services-basement@@17.6.0:2)
        at java.lang.Thread.run(Thread.java:920)

platform: Android (API 31)
gdxVersion = '1.10.0'
pushMsgsVersion = '1.0.0'

Thank you very much for providing this library 🤘

[MrStahlfelge]

Hi, looks like you are using Firebase's built-in capability to show the notification? Looks like they've fixed the issue: firebase/firebase-android-sdk#3115 => update fcm dependency in your project

(But i would rather recommend to write your own code showing notifications)

[Franjoo]

Correct, I want to use Firebase's built-in capability to show the notifications when the app is in background or closed (I am not planning to send data notifications). Therefore I added your gdx-pushmessages-android-fcm dependency.
That worked as expected before updating the target sdk.

I did not add the firebase-messaging additionally. That is correct right?

I noticed that you internally use firebase-messaging in version 17.3.4 which is pretty outdated (latest is 23.0.0). Could the issue perhaps be resolved by updating this dependency?

Thanks for your help!

[MrStahlfelge]

Could the issue perhaps be resolved by updating this dependency?

That's what I meant with "update fcm dependency in your project" :-)

You did not set it yourself so your project uses the version I used to compile this lib. You can use a newer one by adding it to your project yourself.

[Franjoo]

Okay, unfortunately I had no success with the dependency update. After I added

implementation 'com.google.firebase:firebase-messaging:23.0.0'

a new issue comes up that leads to an app crash on startup:

Fatal Exception: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/firebase/iid/FirebaseInstanceId;
    at de.golfgl.gdxpushmessages.FcmMessageProvider.initService(FcmMessageProvider.java:54)
    at com.example.game.Main.initialize(Main.kt:247)
    at com.example.game.Main.render(Main.kt:296)
    at com.badlogic.gdx.backends.android.AndroidGraphics.onDrawFrame(AndroidGraphics.java:471)
    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1573)
    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1272)

Caused by java.lang.ClassNotFoundException: Didn't find class "com.google.firebase.iid.FirebaseInstanceId" on path: DexPathList[[zip file "/data/app/~~P3k_C2tJ6FtRT0doo3abBw==/com.example.game-TilkKXA9LiEkqm3Tby5BgQ==/base.apk"],nativeLibraryDirectories=[/data/app/~~P3k_C2tJ6FtRT0doo3abBw==/com.example.game-TilkKXA9LiEkqm3Tby5BgQ==/lib/arm64, /data/app/~~P3k_C2tJ6FtRT0doo3abBw==/com.example.game-TilkKXA9LiEkqm3Tby5BgQ==/base.apk!/lib/arm64-v8a, /system/lib64, /system_ext/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:218)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    at de.golfgl.gdxpushmessages.FcmMessageProvider.initService(FcmMessageProvider.java:54)
    at com.example.game.Main.initialize(Main.kt:247)
    at com.example.game.Main.render(Main.kt:296)
    at com.badlogic.gdx.backends.android.AndroidGraphics.onDrawFrame(AndroidGraphics.java:471)
    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1573)
    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1272)

As it looks to me, this is caused by the fact that Firebase InstanceId is deprecated / not available anymore in more recent sdk versions. It was replaced by Firebase Installations.

https://firebase.google.com/docs/reference/android/com/google/firebase/iid/FirebaseInstanceId

So after all, I think that a Migration to the current messages api is the only way to come around this issue..

https://firebase.google.com/docs/projects/manage-installations#fid-iid

[MrStahlfelge]

Yes, looks like it.
My app using the feature is not on the Play Store anymore so I won't make the update, but if course I'll review and accept PRs.

[Franjoo]

I am not quite sure how to do the implementation / testing properly. Do you have an advice how I have to put the cloned local repo in my app (where I have a testing environment) 😬 i would be very thankful for some hints 😅

[MrStahlfelge]

Give a new version number and perform the step to compile to local maven repo. Then use this new version number in your project.

[Franjoo]

Seems like gradle wrapper configuration does not go along with the uploadArchives task..

Configuration on demand is an incubating feature.

> Configure project :android-fcm
Warning: Mapping new ns http://schemas.android.com/repository/android/common/02 to old ns http://schemas.android.com/repository/android/common/01
Warning: Mapping new ns http://schemas.android.com/repository/android/generic/02 to old ns http://schemas.android.com/repository/android/generic/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/addon2/02 to old ns http://schemas.android.com/sdk/android/repo/addon2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/repository2/02 to old ns http://schemas.android.com/sdk/android/repo/repository2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/sys-img2/02 to old ns http://schemas.android.com/sdk/android/repo/sys-img2/01
WARNING: API 'variant.getJavaCompile()' is obsolete and has been replaced with 'variant.getJavaCompileProvider()'.
It will be removed at the end of 2019.
For more information, see https://d.android.com/r/tools/task-configuration-avoidance.
To determine what is calling variant.getJavaCompile(), use -Pandroid.debug.obsoleteApi=true on the command line to display more information.

> Task :core:compileJava FAILED
warning: [options] source value 7 is obsolete and will be removed in a future release
warning: [options] target value 7 is obsolete and will be removed in a future release
warning: [options] To suppress warnings about obsolete options, use -Xlint:-options.
3 warnings

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':core:compileJava'.
> java.lang.IllegalAccessError: class org.gradle.internal.compiler.java.ClassNameCollector (in unnamed module @0x30cbe3e7) cannot access class com.sun.tools.javac.code.Symbol$TypeSymbol (in module jdk.compiler) because module jdk.compiler does not export com.sun.tools.javac.code to unnamed module @0x30cbe3e7

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/6.7.1/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 754ms

[Franjoo]

Which project sdk should be used for the gradle jvm? How do I have to configure the project to archive from source?
Thanks again!

[MrStahlfelge]

GHA uses the same command and it works. :)
Did you use JDK8?

[MrStahlfelge]

Feel free to update SDK, Gradle etc when needed.

[Franjoo]

Got it!

java.lang.IllegalAccessError: class org.gradle.internal.compiler.java.ClassNameCollector (in unnamed module @0x7021c5f8) cannot access class com.sun.tools.javac.code.Symbol$TypeSymbol (in module jdk.compiler) because module jdk.compiler does not export com.sun.tools.javac.code to unnamed module @0x7021c5f8

The above exception occurs when gradle does not use jdk 8 / a compatible jdk version
linked issue

Solution:

show current used jdk version
./gradlew --version

show all installed java versions

cd /usr/libexec
./java_home -V

(install jdk 8 via idea or 'by hand' if by hand if not present)

start gradle task with java home directory option pointing to working jdk version

./gradlew uploadArchives -PLOCAL=true -Dorg.gradle.java.home=/Users/{user}/Library/Java/JavaVirtualMachines/corretto-1.8.0_322/Contents/Home