私はiOS開発の新人で、現時点では NSXMLparser を実装していますが、同じ名前でコンテンツが異なるタグを分離する方法が本当にわかりません<description>. 一部のフィードでは、このタグには概要のみが含まれており、他のフィードでは「 img src 」も含まれています。これも抽出したいと考えています。(CDATA の有無にかかわらず)
Example of description tags wich i need to grab the images and then pass to my UIImageView:
<description><![CDATA[ <p>Roger Craig Smith and Troy Baker to play Batman and the Joker respectively in upcoming action game; Deathstroke confirmed as playable character. </p><p><img src="http://image.com.com/gamespot/images/2013/139/ArkhamOrigins_29971_thumb.jpg"
<description><img src="http://cdn.gsmarena.com/vv/newsimg/13/05/samsung-galaxy-s4-active-photos/thumb.jpg" width="70" height="92" hspace="3" alt="" border="0" align=left style="background:#333333;padding:0px;margin:0px 4px 0px 0px;border-style:solid;border-color:#aaaaaa;border-width:1px" /> <p>
@Rob の例で問題は解決すると思いますが、データと画像を分離するために、以下で説明する NSXMLParser に含める方法がわかりません。このパーサーでは、データ (要約) のみを取得できます。
私の NSXMLParser:
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict
{
element = [elementName copy];
if ([elementName isEqualToString:@"item"])
{
elements = [[NSMutableDictionary alloc] init];
title = [[NSMutableString alloc] init];
date = [[NSMutableString alloc] init];
summary = [[NSMutableString alloc] init];
link = [[NSMutableString alloc] init];
img = [[NSMutableString alloc] init];
imageLink = [[NSMutableString alloc]init];
}
if([elementName isEqualToString:@"media:thumbnail"]) {
NSLog(@"thumbnails media:thumbnail: %@", attributeDict);
imageLink = [attributeDict objectForKey:@"url"];
}
if([elementName isEqualToString:@"media:content"]) {
NSLog(@"thumbnails media:content: %@", attributeDict);
imageLink = [attributeDict objectForKey:@"url"];
}
if([elementName isEqualToString:@"enclosure"]) {
NSLog(@"thumbnails Enclosure %@", attributeDict);
imageLink = [attributeDict objectForKey:@"url"];
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
if ([element isEqualToString:@"title"])
{
[title appendString:string];
}
else if ([element isEqualToString:@"pubDate"])
{
[date appendString:string];
}
else if ([element isEqualToString:@"description"])
{
[summary appendString:string];
}
else if ([element isEqualToString:@"media:description"])
{
[summary appendString:string];
}
else if ([element isEqualToString:@"link"])
{
[link appendString:string];
}
else if ([element isEqualToString:@"url"]) {
[imageLink appendString:string];
}
else if ([element isEqualToString:@"src"]) {
[imageLink appendString:string];
}
else if ([element isEqualToString:@"content:encoded"]){
NSString *imgString = [self getImage:string];
if (imgString != nil) {
[img appendString:imgString];
NSLog(@"Content of img:%@", img);
}
}
-(NSString *) getImage:(NSString *)htmlString {
NSString *url = nil;
NSScanner *theScanner = [NSScanner scannerWithString:htmlString];
[theScanner scanUpToString:@"<img" intoString:nil];
if (![theScanner isAtEnd]) {
[theScanner scanUpToString:@"src" intoString:nil];
NSCharacterSet *charset = [NSCharacterSet characterSetWithCharactersInString:@"\"'"];
[theScanner scanUpToCharactersFromSet:charset intoString:nil];
[theScanner scanCharactersFromSet:charset intoString:nil];
[theScanner scanUpToCharactersFromSet:charset intoString:&url];
}
return url;
}
@end