2
我有一個XML文件,我解析。NSXMLParser問題
NSURL *url = [NSURL URLWithString:@"url.xml"];
NSURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:60];
self.downloadData = [[NSMutableData alloc] initWithLength:0];
self.connection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES];
我有所有的連接工作,我以爲我有解析工作,但我有問題,不知道我做錯了。
我didStartElement:
-(void) parser:(NSXMLParser *) parser didStartElement:(NSString *) elementName namespaceURI:(NSString *) namespaceURI qualifiedName:(NSString *) qName attributes:(NSDictionary *) attributeDict {
if ([elementName isEqualToString:kimgurl])
{
elementFound = YES;
}
}
foundCharacter:
-(void)parser:(NSXMLParser *) parser foundCharacters:(NSString *)string {
if (elementFound == YES) {
if(!currentValue)
{
currentValue = [[NSMutableString alloc] init];
}
[currentValue appendString: string];
}
}
然後didEndElement:
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
if (elementFound) {
if ([elementName isEqualToString:kimgurl]) {
NSLog(@"imgurl: %@", currentValue);
imageItems.imageURL = currentValue;
NSLog(@"elname: %@", elementName);
NSLog(@"img: %@", kimgurl);
[currentValue setString:@""];
NSLog(@"imageitem: %@", imageItems.imageURL);
}
}
}
我有NSLogs那裏,因爲imageItems.imageURL爲空。這是一個類似於這樣的類文件。
ImageItems.h
@interface ImageItems : NSObject {
//parsed data
NSString *imageURL;
}
@property (nonatomic, retain) NSString *imageURL;
@end
ImageItems.m
#import "ImageItems.h"
@implementation ImageItems
@synthesize imageURL;
-(void)dealloc
{
[imageURL release];
[super dealloc];
}
@end
你可以通過我的代碼告訴我是新來的Objective-C。
currentValue具有我正在尋找的值。爲什麼imageItems爲空?我錯過了什麼?
我這樣做,我得到EXC_BAD_ACCESS。可能與將ImageItems作爲@class調用有關嗎? – user574947 2011-01-14 03:50:12