How can I find images link in RSS Feed - ios

Question

I am creating app which is based on RSS Feed. I am trying to parse image link. But I don't get the link. The code is as follows-
-(void) grabRSSFeed:(NSString *)blogAddress
{
// Autorelease pool for secondary threads
// NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
// Initialize the blogEntries MutableArray that we declared in the header
feedEntries = [[NSMutableArray alloc] init];
// Convert the supplied URL string into a usable URL object
NSURL *url = [NSURL URLWithString:blogAddress];
if(url==nil)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"RSS Feed" message:#"Please enter a valid RSS feed URL."
delegate:self cancelButtonTitle:nil otherButtonTitles:#"OK", nil];
[alert show];
}
else
{
// Create a new rssParser object based on the TouchXML "CXMLDocument" class, this is the
// object that actually grabs and processes the RSS data
NSError *error;
CXMLDocument *rssParser = [[CXMLDocument alloc] initWithContentsOfURL:url options:0 error:&error];
if(rssParser==nil)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"RSS Feed" message:#"Please enter a valid RSS feed URL."
delegate:self cancelButtonTitle:nil otherButtonTitles:#"OK", nil];
[alert show];
}
else
{
// Create a new Array object to be used with the looping of the results from the rssParser
NSArray *resultNodes = NULL;
// Set the resultNodes Array to contain an object for every instance of an node in our RSS feed
resultNodes = [rssParser nodesForXPath:#"//item" error:nil];
// Loop through the resultNodes to access each items actual data
for (CXMLElement *resultElement in resultNodes) {
// Create a temporary MutableDictionary to store the items fields in, which will eventually end up in blogEntries
NSMutableDictionary *feedItem = [[NSMutableDictionary alloc] init];
// Create a counter variable as type "int"
int counter;
// Loop through the children of the current node
for(counter = 0; counter < [resultElement childCount]; counter++)
{
// Add each field to the blogItem Dictionary with the node name as key and node value as the value
if([[resultElement childAtIndex:counter] stringValue]!=nil)
[feedItem setObject:[[resultElement childAtIndex:counter] stringValue] forKey:[[resultElement childAtIndex:counter] name]];
}
// Add the blogItem to the global blogEntries Array so that the view can access it.
[feedEntries addObject:feedItem];
}
NSLog(#"Feeds = %#",feedEntries);
[feedEntries writeToFile:[[self applicationDocumentsDirectory] stringByAppendingPathComponent:#"Feeds.plist"] atomically:YES];
// [self performSelectorOnMainThread:#selector(reloadTableData:) withObject:nil waitUntilDone:NO];
}
}
}
How can I get image link about particular news?