I googled and found "AEXML" framework for SWIFT programming. I got confused to access the tags from "AEXMLElement".

<?xml version="1.0" encoding="utf-8" standalone="no"?>
<rss version="2.0">
    <channel>
        <title>ComputerWeekly: Latest IT News</title>
        <link>http://computerweekly.techtarget.com/rss/Latest-IT-news.xml</link>
        <description>Follow the latest technology news that matters to UK IT leaders and IT professionals, as it happens, from the UK’s leading technology publication.</description>
        <language>en-us</language>
        <copyright>Copyright TechTarget - All rights reserved.</copyright>
        <docs>http://computerweekly.techtarget.com/rss/Latest-IT-news.xml</docs>
        <generator>Techtarget Feed Generator</generator>
        <managingEditor>editor@computerweekly.com (Editor)</managingEditor>
        <webMaster>webmaster@techtarget.com (Webmaster)</webMaster>
        <ttl>60</ttl>
        <image>
            <width>175</width>
            <height>33</height>
            <title>ComputerWeekly</title>
            <link>http://computerweekly.techtarget.com/rss/Latest-IT-news.xml</link>
        </image>
        <lastBuildDate>Tue, 6 Oct 2015 03:36:45 EDT</lastBuildDate>
        <item>
            <title>UCHL mobile healthcare service demonstrates the potential future of the NHS</title>
            <link>http://www.computerweekly.com/news/4500254844/UCHL-mobile-healthcare-service-demonstrates-the-potential-future-of-the-NHS</link>
            <description>A mobile screening service which combines medical and information technologies could be an early example of healthcare in the future</description>
            <author>ComputerWeekly.com(editor@www.com)</author>
            <pubDate>Mon, 5 Oct 2015 12:20:50 EDT</pubDate>
        </item>
        <item>
            <title>Security Think Tank: Addressing the gap between security data and intelligence</title>
            <link>http://www.computerweekly.com/opinion/Security-Think-Tank-Addressing-the-gap-between-security-data-and-intelligence</link>
            <description>What is the best practice for collecting and using threat indicators from security incidents to improve defences against future cyber attacks?</description>
            <author>Mike Gillespie(editor@www.com</author>
            <pubDate>Mon, 5 Oct 2015 12:00:07 EDT</pubDate>
        </item>
</channel>
</rss>

let xmlDoc =  try AEXMLDocument(xmlData: responseData!)
if let items = xmlDoc.root ["channel"]["item"].all {
                print("Items: (items)")
                for item in items {
                    print("Item: (item.value)")
                    if let name = item.value {
                        print("Name: (name)")
                    }
                }
            }

Items: [<RevealControllerDemo.AEXMLElement: 0x7f98e3d68ec0>, <RevealControllerDemo.AEXMLElement: 0x7f98e3d70440>, <RevealControllerDemo.AEXMLElement: 0x7f98e3d74b70>, <RevealControllerDemo.AEXMLElement: 0x7f98e3d799f0>, <RevealControllerDemo.AEXMLElement: 0x7f98e3eebb20>, <RevealControllerDemo.AEXMLElement: 0x7f98e3ef90c0>, <RevealControllerDemo.AEXMLElement: 0x7f98e6002d90>, <RevealControllerDemo.AEXMLElement: 0x7f98e6006da0>, <RevealControllerDemo.AEXMLElement: 0x7f98e600c620>, <RevealControllerDemo.AEXMLElement: 0x7f98e6010de0>, <RevealControllerDemo.AEXMLElement: 0x7f98e60152b0>, <RevealControllerDemo.AEXMLElement: 0x7f98e601c710>, <RevealControllerDemo.AEXMLElement: 0x7f98e6022290>, <RevealControllerDemo.AEXMLElement: 0x7f98e6026790>, <RevealControllerDemo.AEXMLElement: 0x7f98e602b560>, <RevealControllerDemo.AEXMLElement: 0x7f98e60316b0>, <RevealControllerDemo.AEXMLElement: 0x7f98e6036480>, <RevealControllerDemo.AEXMLElement: 0x7f98e603ad50>, <RevealControllerDemo.AEXMLElement: 0x7f98e60414a0>, <RevealControllerDemo.AEXMLElement: 0x7f98e6045560>]
Item: nil