Backup the Application's

	public int runBackup(Uri uri)
	{
		int count=0;
		String file = uri.getHost() +"-"+ System.currentTimeMillis();

		Cursor cursor = cr.query(uri, null, null, null, null);
	    count = cursorToCSV(cursor, file);
	    cursor.close();

	    String msg = String.format("Backed up %d records to %s file", count, file);
	    Toast.makeText(context, msg, Toast.LENGTH_SHORT).show();
	    return count;
	}