Invalid Uri (dbflow:) used for observer

[nithdi]

Hello,

I am currently investigating an issue we have with one of our models. We are using a FlowContentObserver to listen to changes for a single model.

When registering this observer, our app crashes with the error

Invalid Uri (dbflow:) used for observer

The whole stacktrace:

Uncaught Exception
    java.lang.RuntimeException: Unable to create application com.myapp.OneApplication: java.lang.IllegalArgumentException: Invalid Uri (dbflow:) used for observer
            at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4556)
            at android.app.ActivityThread.access$1500(ActivityThread.java:151)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5254)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
     Caused by: java.lang.IllegalArgumentException: Invalid Uri (dbflow:) used for observer
            at android.os.Parcel.readException(Parcel.java:1550)
            at android.os.Parcel.readException(Parcel.java:1499)
            at android.content.IContentService$Stub$Proxy.registerContentObserver(IContentService.java:701)
            at android.content.ContentResolver.registerContentObserver(ContentResolver.java:1571)
            at android.content.ContentResolver.registerContentObserver(ContentResolver.java:1563)
            at com.raizlabs.android.dbflow.runtime.FlowContentObserver.registerForContentChanges(FlowContentObserver.java:188)
            at com.myapp.BoxCommunicator.registerObservable(BoxCommunicator.java:113)
            at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1012)
            at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4553)
            at android.app.ActivityThread.access$1500(ActivityThread.java:151)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5254)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

The strange thing here is that it currently does not work for currently only one app installation. This app installation did ran an AlterTableMigration on the model we want to observe.

Do you have any hint where the issue might be?

Thanks in advance!

[kaeawc]

@nithdi Could you post more information about the model and the alter table migration you mentioned? Since you're only seeing it for one app instance and that instance has a migration, sounds very likely the root issue is the migration is not being written the way you expect. Have you tried to make a backup of the app and see what the actual sqlite database looks like both before and after the migration?

[agrosner]

yes @nithdi need more info

[nithdi]

We moved forward in development and can't reproduce this issue anmyore. I think we can close the it for the moment.I will post another comment with more information about the model and migration here when this happens again.