App crashes with offline mode on Android API 29, Android Studio 4.2 canary 1

[mr3y-the-programmer]

at the end of codelab we finished implementing GithubRemoteMediator, but when running the app it crashes, saying in logcat "Room cannot verify the data integrity. Looks like you've changed schema but forgot to update the version number. You can simply fix this by increasing the version number." , However, RepoDatabase file is:

@Database(
        entities = [Repo::class, RemoteKeys::class],
        version = 1,
        exportSchema = false
)
abstract class RepoDatabase : RoomDatabase() {  

As you can see, I didn't increase the version or manipulate any other related database files I just walked through codelab but can't figure out why this error happens?

[mr3y-the-programmer]

Also, this issue #60 mentions that Offline cache is broken, So I'm not the only one who face this problem

[vignesh6]

Update the version no and Add migration to the Room Database. when ever you create or alter table.

[florina-muntenescu]

If you ran and installed the application after adding the Repo entity, adding the RemoteKeys entity changes the database schema. This means that you will have to increase the database version to 2 and when building your database, before calling build(), call .fallbackToDestructiveMigration().

Adding a note in the codelab