Rename and delete Room Database

Question

I am wondering how to rename or delete a Room Database which was instantiated by following code:

AppDatabase db = Room.databaseBuilder(getApplicationContext(), AppDatabase.class, "database-name").build();

Should I expect a database-name.db file in getApplicationContext().getFilesDir(), which I could then rename or delete? Would this approach be safe?

My current workaround would be to use only one database with multiple tables, emulating multiple databases. I am not sure if this approach scales very well though.

I could not find any answers to this question in the documention. I am not asking how to rename or delete columns or rows.

Answer 1

To rename a room database you can do the following when getting your database instance :

//Kotlin
fun getDatabase(context: Context) : YourRoomDbClass {
   return INSTANCE ?: synchronized(this){
       val dbFile = context.applicationContext.getDatabasePath("your_old_db_name.db")
       if(dbFile.exists()) dbFile.renameTo(File(dbFile.path + "your_new_db_name.db"))
       val instance = Room.databaseBuilder(context.applicationContext, YourRoomDbClass::class.java, "your_new_db_name.db")
                          .build()
       INSTANCE = instance
       instance
   }
}