iphone - Xcode 从 rss feed 获取图像 url

Question

Xcode 新手，很高兴能得到这个问题的答案。我正在尝试从 RSS feed 获取图像 url 标签并将其添加到我的自定义表格 View 单元格中。其他文本我很好。

这是 rss 行:

<Item>
<title>this is a title</title>
<description>this is a description</description>
<link>http://www.something.com</link>
<pubDate>Fri, 09 Aug 2013</pubDate>
<enclosure type="image/jpg" url="http://www.ThisIsTheUrlIWant.com" />
</item>

这是我的代码的一部分，没有任何图像逻辑:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath     *)indexPath {
CustomCellNews *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell"  forIndexPath:indexPath];
cell.titleLabel.text = [[feeds objectAtIndex:indexPath.row] objectForKey: @"title"];
cell.descriptionLabel.text = [[feeds objectAtIndex:indexPath.row] objectForKey: @"description"];
//set cell image here
return cell;
}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:    (NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict {

element = elementName;

if ([element isEqualToString:@"item"]) {

    item    = [[NSMutableDictionary alloc] init];
    title   = [[NSMutableString alloc] init];
    link    = [[NSMutableString alloc] init];
    description = [[NSMutableString alloc] init];
    //image stuff
}
}

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI: (NSString *)namespaceURI qualifiedName:(NSString *)qName {

if ([elementName isEqualToString:@"item"]) {

    [item setObject:title forKey:@"title"];
    [item setObject:link forKey:@"link"];
    [item setObject:description forKey:@"description"];
    //image stuff

    [feeds addObject:[item copy]];

}

}

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {

if ([element isEqualToString:@"title"]) {
    [title appendString:string];
} else if ([element isEqualToString:@"link"]) {
    [link appendString:string];
} else if ([element isEqualToString:@"description"]) {
    [ingress appendString:string];
}
//image stuff

}

谢谢

Answer 1

试试这个:

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
    if ([elementName isEqualToString:@"enclosure"]) {
        NSString *units = [attributeDict objectForKey:@"url"];
    }
}

希望这有帮助。