When should I build the room database instance?

Question

First time posting a question and I'm a coding noob so sorry if I do something wrong.

I check around and found one answer which is somewhat similar to my question: When / How to Create / Destroy Room Database

However I am not using dagger, nor do I know how to use it.

I wanted to ask when should you build your room database instance? Suppose my app uses the database throughout, should I build it in the OnCreate of the Main Activity? Or should I only build it once the users tries to access some functionality that requires it?

This is the code in question:

instance = Room.databaseBuilder(context.getApplicationContext(), MovieDatabase.class, DB_NAME).build();

So basically when is the best time to run the above code?

Please let me know if this question doesn't make sense.

Answer 1

Your Database Instance will be built as Singleton and you can access it anywhere as it will be created only once.

Please follow this codelab tutorial to get a clear vision of using Room