Get image url from RSS Data - objective-c

Question

I have got a RSS parsing project.it's my RSS url;
http://vimeo.com/udhdhmi/videos/rss
I'm parsing with NSXMLParser methods.
- (void)rssParseStart{
NSURL *url = [NSURL URLWithString:#"http://vimeo.com/udhdhmi/videos/rss"];
parser = [[NSXMLParser alloc] initWithContentsOfURL:url];
[parser setDelegate:self];
[parser setShouldResolveExternalEntities:NO];
[parser parse];
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
element = elementName;
if ([element isEqualToString:#"item"]) {
model = [[VideoModel alloc]init];
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
if ([element isEqualToString:#"title"]) {
[model.videoTitle appendString:string];
}
if ([element isEqualToString:#"pubDate"]) {
[model.videoPubDate appendString:string];
}
if ([element isEqualToString:#"link"]) {
[model.videoLink appendString:string];
}
if ([element isEqualToString:#"description"]) {
[model.videoDescription appendString:string];
}
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
if ([elementName isEqualToString:#"item"]) {
[feeds addObject:model];
}
}
- (void)parserDidEndDocument:(NSXMLParser *)parser{
[self.tableView reloadData];
}
No problem up to this point but coming datas of from "Description" tags thus;
-example;
<p><img src="http://i.vimeocdn.com/video/491445051_200x150.jpg" alt="" /></p><p><p class="first"></p></p><p><strong>Cast:</strong> DHMI</p><p><strong>Tags:</strong> </p>
I want only image url adress from that data.
thank for your interest.

Answer 1

you can get url from that data by trimming the string value you get from xml parser
// it is assumed that 'string' variable holds your current data
NSRange range;
int index;
range = [string rangeOfString:#"img src=\""];
index = range.location + range.length;
NSString* trimmedString = [string substringFromIndex:index];
range = [trimmedString rangeOfString:#"\""];
index = range.location + range.length - 1;
NSString* finalValue = [trimmedString substringToIndex:index];
finalValue stores the url as a string

Answer 2

Solution:
- (void)rssParseStart{
self.progressBar = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
self.progressBar.labelText = #"Lütfen bekleyiniz...";
NSURL *url = [NSURL URLWithString:#"http://vimeo.com/udhdhmi/videos/rss"];
parser = [[NSXMLParser alloc] initWithContentsOfURL:url];
[parser setDelegate:self];
[parser parse];
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
element = elementName;
if ([element isEqualToString:#"item"]) {
model = [[VideoModel alloc]init];
}
if ([element isEqual:#"media:thumbnail"]) {
NSString *imageURLString = [attributeDict objectForKey:#"url"];
[model.videoDescription appendString:imageURLString];
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
if ([element isEqualToString:#"title"]) {
[model.videoTitle appendString:string];
}
if ([element isEqualToString:#"pubDate"]) {
[model.videoPubDate appendString:string];
}
if ([element isEqualToString:#"link"]) {
[model.videoLink appendString:string];
}
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
if ([elementName isEqualToString:#"item"]) {
[feeds addObject:model];
}
}
- (void)parserDidEndDocument:(NSXMLParser *)parser{
[self.tableView reloadData];
[MBProgressHUD hideHUDForView:self.view animated:YES];
}