title: How to use Room Persistence Library with pre-populated database?
body: <p>I'd like to use Room with a pre-populated database, but I can't understand how to tell Room where to find my database.</p>
  
  <p>I've now put it in <code>src/main/assets/databases</code> and when I create the instance for the Room database I create it this way:</p>
  
  <pre><code>Room.databaseBuilder(
      getApplicationContext(),
      AppDatabase.class,
      "justintrain.db"
  )
  .allowMainThreadQueries()
  .build();
  </code></pre>
  
  <p>This way tho, I think it's creating a new database every time, or anyways, it's not using the pre-populated one.</p>
  
  <p>How can I make it to find my database?</p>