public void Delete(DownloadedItem downloaded_item) {
   Delete(downloaded_item.getDownloadedFile().getPath());
 } // Delete
 public static ContentValues getContentValues(DownloadedItem di) {
   ContentValues cv = new ContentValues();
   // cv.put(COLUMN_DOWNLOADED_DATE, di.getDownloadedDate().getTime());
   cv.put(COLUMN_DOWNLOADED_FILE, di.getDownloadedFile().getPath());
   return cv;
 } // getContentValues