For your reference, you can download the complete Xcode project from GitHub.
Steps:
(1) Create Swift Project
(2) Declare Variables in ViewController.swift file :
Now, declare some variables which we want to parse from XML file or Used in our Project. For variable declare in Swift Programming write below code :
(3) Implement NSXMLParser Delegate & import it’s method :
import UIKit
class ViewController: UIViewController, NSXMLParserDelegate, UITableViewDelegate, UITableViewDataSource
{
}
Now, write method of NSXMLParserDelegate methods, which looks like :
func parser(parser: NSXMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [NSObject : AnyObject])
{
}
func parser(parser: NSXMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?)
{
}
func parser(parser: NSXMLParser, foundCharacters string: String?)
{
}
(4) Create function startParsing() :
func startParsing()
{
objPostArray = []
objNSXMLParser = NSXMLParser(contentsOfURL: NSURL(string: “http://images.apple.com/main/rss/hotnews/hotnews.rss”))!
objNSXMLParser.delegate = self
objNSXMLParser.parse()
tblNews.reloadData()
}
5) Retrieve data from XML file using Delegate Method :
func parser(parser: NSXMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [NSObject : AnyObject])
{
objDataString = elementName
if (elementName as NSString).isEqualToString(“item”) {
objPostDictionary = NSMutableDictionary.alloc()
objPostDictionary = [:]
objDataTitle = NSMutableString.alloc()
objDataTitle = “”
objDataDate = NSMutableString.alloc()
objDataDate = “”
}
}
func parser(parser: NSXMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?)
{
if (elementName as NSString).isEqualToString(“item”) {
if !objDataTitle.isEqual(NSNull) {
objPostDictionary.setObject(objDataTitle, forKey: “title”)
}
if !objDataDate.isEqual(NSNull) {
objPostDictionary.setObject(objDataDate, forKey: “date”)
}
objPostArray.addObject(objPostDictionary)
}
}
func parser(parser: NSXMLParser, foundCharacters string: String?)
{
if objDataString.isEqualToString(“title”) {
objDataTitle.appendString(string!)
} else if objDataString.isEqualToString(“pubDate”) {
objDataDate.appendString(string!)
}
}
Display Data
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return objPostArray.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
{
var cell : UITableViewCell! = tableView.dequeueReusableCellWithIdentifier(“Cell”) as! UITableViewCell
if(cell == nil) {
cell = NSBundle.mainBundle().loadNibNamed(“Cell”, owner: self, options: nil)[0] as! UITableViewCell;
}
cell.textLabel?.text = objPostArray.objectAtIndex(indexPath.row).valueForKey(“title”) as! NSString as String
cell.detailTextLabel?.text = objPostArray.objectAtIndex(indexPath.row).valueForKey(“date”) as! NSString as String
return cell as UITableViewCell
}
For your reference, you can download the complete Xcode project from GitHub.