How to populate Android Room database table on first run?

Question

In SQLiteOpenHelper there is a onCreate(SQLiteDatabase ...) method which i used to populate database tables with some initial data.

Answer 1

@Provides
@Singleton
LocalDatabase provideLocalDatabase(@DatabaseInfo String dbName, Context context) {
    return Room.databaseBuilder(context, LocalDatabase.class, dbName)
            .addCallback(new RoomDatabase.Callback() {
                @Override
                public void onCreate(@NonNull SupportSQLiteDatabase db) {
                    super.onCreate(db);
                    db.execSQL("INSERT INTO id_generator VALUES(1, 1, 1);");
                }
            })
//                .addMigrations(LocalDatabase.MIGRATION_1_2)
            .build();
}