我正在使用 NSXMLParser 解析一个包含视频信息的小型 XML 文件。XML 中的元素之一是指向与每个视频关联的缩略图的 URL。我正在尝试解析 XML，获取 ImageURL，然后使用它来获取图像并将其与字符串（例如视频名称）一起存储。
我似乎无法让它工作。我可以从调试器中看到字典具有图像的键/值对，并且图像是从 URL 创建的，但我无法将其添加到 NSDictionary。有什么建议么？以下是处理解析的代码片段。
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
NSLog(@"found this element: %@", elementName);
currentElement = [elementName copy];
if ([elementName isEqualToString:@"clipid"]) {
// clear out our story item caches...
item = [[NSMutableDictionary alloc] init];
currentClipID = [[NSMutableString alloc] init];
currentClipName = [[NSMutableString alloc] init];
currentImageURL = [[NSMutableString alloc] init];
currentImage = [[UIImage alloc] init];
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
NSLog(@"found characters: %@", string);
// save the characters for the current item...
if ([currentElement isEqualToString:@"clipid"]) {
[currentClipID appendString:string];
} else if ([currentElement isEqualToString:@"clipname"]) {
[currentClipName appendString:string];
} else if ([currentElement isEqualToString:@"imageurl"]) {
[currentImageURL appendString:string];
//Take the Image URL, and convert it to an Image
NSURL *imageURL = [NSURL URLWithString:string];
NSData *data = [NSData dataWithContentsOfURL:imageURL];
UIImage *image = [[UIImage alloc] initWithData:data];
currentImage = //If it were a string I'd use appendString. How do I add this image to the Dictionary?
}
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
NSLog(@"ended element: %@", elementName);
if ([elementName isEqualToString:@"clipid"]) {
// save values to an item, then store that item into the array...
[item setObject:currentClipID forKey:@"clipid"];
[item setObject:currentClipName forKey:@"clipname"];
[item setObject:currentImageURL forKey:@"imageurl"];
[item setObject:currentImage forKey:@"image"];
//videos is an NSMutableArray
[videos addObject:[item copy]];
}
}