Okay, so I'm having some very odd behaviour that doesn't make much sense in my app.
My app uses BLE and I have a static class which I initialize on app launch, this typically works with no issue.
Today I made a single change in my app which was to update this:
implementation 'com.google.firebase:firebase-core:17.2.1'
implementation 'com.google.firebase:firebase-messaging:20.0.0'
To this:
implementation 'com.google.firebase:firebase-core:17.2.2'
implementation 'com.google.firebase:firebase-messaging:20.1.0'
And after making this minor version update to firebase core, my app now immediately crashes on launch with the following error:
2020-02-13 09:44:57.530 20760-20760/my.package.name E/AndroidRuntime: FATAL EXCEPTION: main
Process: my.package.name, PID: 20760
java.lang.NoSuchMethodError: No static method injectMembers(Ldagger/MembersInjector;Ljava/lang/Object;)Ljava/lang/Object; in class Ldagger/internal/MembersInjectors; or its super classes (declaration of 'dagger.internal.MembersInjectors' appears in /data/app/my.package.name-Nbmle9woVCiX-2v0teYwZw==/base.apk!classes3.dex)
at com.polidea.rxandroidble.RxBleAdapterStateObservable_Factory.get(RxBleAdapterStateObservable_Factory.java:28)
at com.polidea.rxandroidble.RxBleAdapterStateObservable_Factory.get(RxBleAdapterStateObservable_Factory.java:10)
at com.polidea.rxandroidble.RxBleClientImpl_Factory.get(RxBleClientImpl_Factory.java:104)
at com.polidea.rxandroidble.RxBleClientImpl_Factory.get(RxBleClientImpl_Factory.java:23)
at dagger.internal.DoubleCheck.get(DoubleCheck.java:47)
at com.polidea.rxandroidble.DaggerClientComponent.rxBleClient(DaggerClientComponent.java:419)
at com.polidea.rxandroidble.RxBleClient.create(RxBleClient.java:54)
at my.package.name.Comm.RxBLEComm.<init>(RxBLEComm.java:109) // These are the only
at my.package.name.Comm.RxBLEComm.init(RxBLEComm.java:118) // lines in my code which
at my.package.name.RootApp.onCreate(RootApp.kt:63) // are totally unrealted to firebase
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1155)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5928)
at android.app.ActivityThread.access$1100(ActivityThread.java:200)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1656)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6735)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
2020-02-13 09:44:57.586 2989-3111/? E/NetworkController.MobileSignalController(2): showVoteIcon=false
Note: My app does not use dagger at all, though the RxBLE library might...
If I revert the firebase update the app builds and runs with no issue, so for now I'll just stick to using firebase-messaging:20.0.0 and firebase-core:17.2.1, but does anyone have any clue why this might be happening?
This is the only line of code required to make the crash happen:
RxBleClient.create(applicationContext)
Here is a test repo that you can reproduce the crash in: https://github.com/Doophie/TestAppCrash
Note that there are 2 commits, in the first commit the app has updated firebase and crashes, the second commit it does not crash and uses the older firebase version.
So the issue was the version of the rxandroidble library was incompatible with the new firebase messaging.
When I updated from
implementation 'com.polidea.rxandroidble:rxandroidble:1.4.3'
to
implementation 'com.polidea.rxandroidble:rxandroidble:1.7.1'
the crash stopped.