Hey guys! I have just started learning kotlin. Bee...

# android

[theimpulson]

Hey guys! I have just started learning kotlin. Been using Flutter for an year but wanted to learn native as well.

I was trying room library. Its recommended in docs to use singleton pattern with the database. So I thought that an object would be go to choice, however, I see everyone is using abstract class. Any reasons why?

[arekolek]

https://developer.android.com/reference/androidx/room/RoomDatabase#RoomDatabase()

You cannot create an instance of a database, instead, you should acquire it via Room.databaseBuilder(Context, Class, String) or Room.inMemoryDatabaseBuilder(Context, Class).

[Erik]

In other words: the Room library will provide you with an instance that extends your abstract class. Treat this instance as a singleton, i.e.: keep reference to it and re-use that single instance