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Hi Everyone,

I've been working on an iPhone application which parses XML in the format of:


Next to this, i've made a class PersonClass with both the variable Name and Age.

Now in the file where i'm reading the XML i've set the following:

<pre lang="c#">
#import "PeopleStruct.h"

@interface PeopleData: NSObject {
      Person *currentPerson;
      NSMutableArray *allPeople;
      NSXMLParser *parser;
@property (readonly, retain) NSMutableArray *allPeople;

- (id)readPeopleXML;


In the PeopleData file i've put an @Synthesize allPeople;

And i'm reading the people like this:
<pre lang="c#">-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
      if ([elementName isEqualToString:@"PERSON"])
            currentPerson = [PersonClass alloc];
   = [attributeDict objectForKey:@"NAME"];
            currentPerson.age = [attributeDict objectForKey:@"AGE"];
            [allPeople addObject:currentPerson ];
            currentPerson = nil;

However, the app fails to build the application because of the line:
currentPerson = [PersonClass alloc];

And throws the error:

Undefined symbols for architecture i386:
   "_OBJC_CLASS_$_PersonClass", referenced from:
         objc-class-ref in PeopleData.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Anyone who could tell me how to bypass this?

Yours Sincerely,

Thanks in advance Smile | :)
Posted 16-Feb-12 2:59am

1 solution

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Solution 1


Shouldn't you be calling
currentPerson = [[PersonClass alloc] init];
instead ?

Or maybe you missed the
#import PersonClass.h

Anyway, I'm not sure of what I'm saying.
larssy1 16-Feb-12 9:25am
1. No, you don't have to do the init.
2. No, I sadly didn't forget to put that import :[
_Zorro_ 16-Feb-12 9:27am
Well, I'm sorry then... good luck with that!
Edit: Does this helps? ->
larssy1 16-Feb-12 9:33am
Nope, didn't fix it either. Next to this, the same functionality works somewhere else.. but it fails in this part.
_Zorro_ 16-Feb-12 9:43am
I did have some problems with the simulator data that had to be cleared and CoreData framework not beeing loaded but I'm just starting ios development so I won't be able to help you unless it was something really stupid... :)

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