SMS内容提供者光标为空

Question

这是在选定日期内获取SMS日志的代码，但它返回空光标：

        long lFrom = login.getTime();
        long lTo= logout.getTime();

        String[] whereValue = {String.valueOf(lFrom),String.valueOf(lTo)};
 Cursor cursor = this.getContentResolver().query(allMessages, new String[]{"date", "type", "address"},
            Telephony.Sms.DATE + " BETWEEN ? AND ?", whereValue, null);