public class MyMigration extends Migration {
public MyMigration(int startVersion, int endVersion) {
super(startVersion, endVersion);
}
@Override
public void migrate(@NonNull SupportSQLiteDatabase database) {
}
}
Room.databaseBuilder(context, MyDatabase.class, "my-database")
.addMigrations(new MyMigration(1, 2))
.build();