零的NSXMLParser初始化數據IOS

Question

嗨，大家好，我得到根本不算什麼（零值），當我嘗試初始化我的NSXMLParser與我從Web服務響應中獲取數據，這是我使用的代碼：

header.h

NSData*abccc; 
NSMutableData*conWebMutableData; 
NSXMLParser*xmlParser; 

@interface ResponseWebServices_View : UIViewController<NSStreamDelegate, NSXMLParserDelegate> 


@property(nonatomic,strong)NSMutableString*soapResults; 
@property(nonatomic,strong)NSXMLParser*xmlParser; 
@property(nonatomic, strong)NSData*abcc; 

@end 

file.m

-(void)connection:(NSURLConnection*)connection didReceiveResponse:(NSURLResponse*)response{ 
[conWebMutableData setLength:0]; 

} 

-(void)connection:(NSURLConnection*)connection didReceiveData:(NSData*)data{ 
[conWebMutableData appendData:data]; 

} 
-(void)connection:(NSURLConnection*)connection didFailWithError:(NSError*)error{ 
NSLog(@"ERROR with con"); 

} 
-(void)connectionDidFinishLoading:(NSURLConnection*)connection{ 

NSString*theXML = [[NSString alloc]initWithBytes: [conWebMutableData mutableBytes] length:[conWebMutableData length]encoding:NSUTF8StringEncoding]; 
NSLog(theXML); 
abccc= [theXML dataUsingEncoding:NSUTF8StringEncoding]; 
//xmlParser = [[NSXMLParser alloc]initWithData:conWebMutableData]; (0x00000000)xmlParser value i get 
//xmlParser = [[NSXMLParser alloc]initWithData:abccc]; (0x00000000)xmlParser value 
[xmlParser setDelegate:self ]; 
[xmlParser setShouldResolveExternalEntities: YES]; 
[xmlParser parse]; 

} 

Answer 1

嘗試這種用於分配XML解析器

-(void)connectionDidFinishLoading:(NSURLConnection*)connection{ 

NSString *xmlResponseString = [[[NSString alloc] initWithData:conWebMutableData encoding:NSUTF8StringEncoding] autorelease]; 
NSLog(@"xmlResponseString--->%@",xmlResponseString); 

if([conWebMutableData length]>0) 
{ 
xmlParser = [[NSXMLParser alloc]initWithData:conWebMutableData]; 
[xmlParser setDelegate:self ]; 
[xmlParser setShouldResolveExternalEntities: YES]; 
[xmlParser parse]; 
} 
else 
{ 
Nslog("either server not send response or conWebMutableData is empty "); 
} 

}