title: Android room database won't export all the data
body: <p>I'm trying to setup Room database backup functionality. 
  Problem is that sql database file doesn't contain latest set of data in the app once downloaded. It always misses some most recent records. 
  Is there a proper way to export room database? 
  P.S. I didn't face similar problems when handled my db with sqliteHelper, so I suppose it must have something to do with Room.</p>
  
  <p>Way I'm doing it:</p>
  
  <pre><code>@Throws(IOException::class)
  private fun copyAppDbToDownloadFolder(address: String) {
      val backupDB = File(address, "studioDb.db") 
      val currentDB = applicationContext.getDatabasePath(StudioDatabase.DB_NAME)
      if (currentDB.exists()) {
          val src = FileInputStream(currentDB).channel
          val dst = FileOutputStream(backupDB).channel
          dst.transferFrom(src, 0, src.size())
          src.close()
          dst.close()
      }
  }
  </code></pre>