Room library can copy db from asset folder?

Question

I have old project with Pre-loaded database in Assets folder. The project have SQLiteOpenHelper implemented for database operations. But now to update app I want to move my proj

Answer 1

Is there any method or feature available in Room library with I can use preloaded db file in app at runtime.

Starting with Room 2.2.0, RoomDatabase.Builder supports createFromAsset() and createFromFile() for setting up a database with pre-loaded initial content. See the documentation for more.

Answer 2

For future people possibly landing here like me in search of the answer - Room finally added the ability to load from assets as of 2.2.0-alpha01

Just put the database in assets folder (it can also be in a subfolder in assets) and access it like this:

val db = Room.databaseBuilder(applicationContext, MyDatabase::class.java, "database.db")
        .createFromAsset("/databases/database.db")
        .build()

If the database is not in a subdirectory, you just put the name without any additional path.