'How do I supress a Room database schema change error?

I'm just toying around with my schema and I can't get my app to load at all since I changed the schema/Entity class.

I have deleted the app on my testing devic, cleared the caches on AndroidStudio, and rebooted my machine but the error persists. All I did was change the default values of one of my Entity data classes for my Room database.

How do I force AndroidStudio to forget about the old table schema/Entity class without incrementing the version number and providing a migration path?

Error:

java.lang.IllegalStateException: 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.

Solution 1:^[1]

You can try setting android:allowBackup to false in the manifest file.

Solution 2:^[2]

You can resolve this issue in two ways.

Allow the destructive migration by calling fallbackToDestructiveMigration() in the databaseBuilder.

 Room.databaseBuilder(context, AppDatabase::class.java, DB_NAME)
     .fallbackToDestructiveMigration()
     .build()

Note that you’ll lose all your data if you are going with this method.

To avoid losing the data in your app, you’ll have to write some SQL. Before we jump into it though, let’s see how to add a migration to the Room database.

Let’s say we had a schema version 1 and we increased it to 2. Then our migration will be written like this:

// Create a static val
val MIGRATION_1_2 = object : Migration(1, 2) {
    override fun migrate(database: SupportSQLiteDatabase) {
    // database.execSQL(...)
    }
}

// Add the migration to your database builder
Room.databaseBuilder(context, AppDatabase::class.java, DB_NAME)
    .addMigrations(MIGRATION_1_2)
    .build()

For more: How to migrate Room database painlessly

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	Poshan Peeroo
Solution 2	Codemaker

'How do I supress a Room database schema change error?

Solution 1:[1]

Solution 2:[2]

Sources

Related Questions

Solution 1:^[1]

Solution 2:^[2]