iPhone XML解析错误

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问题描述

大家好，

我一直在研究iPhone应用程序，该应用程序以以下格式解析XML:

<人>
< PERSON NAME ="KAREL" AGE ="23"/>
< PERSON NAME ="KEES" AGE ="23"/>
</PEOPLE>

紧接着，我创建了一个类PersonClass，同时具有变量Name和Age.

现在，在我正在读取XML的文件中，我设置了以下内容:

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

@interface PeopleData:NSObject {
人* currentPerson;

NSMutableArray * allPeople;
NSXMLParser *解析器;
}
@property(只读，保留)NSMutableArray * allPeople;

-(id)readPeopleXML;

@end
</pre>

在PeopleData文件中，我放置了@Synthesize allPeople;

我正在读这样的人:
< pre lang ="c#"> ;-( void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURIqualifiedName:(NSString *)qName属性:(NSDictionary *)attributeDict
{
如果([elementName isEqualToString:@"PERSON"])
{
currentPerson = [PersonClass alloc];
currentPerson.name = [attributeDict objectForKey:@"NAME"];
currentPerson.age = [attributeDict objectForKey:@"AGE"];

[allPeople addObject:currentPerson];
currentPerson = nil;
}
}</pre>

但是，该应用程序由于以下原因而无法构建应用程序:
currentPerson = [PersonClass alloc];

并抛出错误:

体系结构i386的未定义符号:
"_OBJC_CLASS _ $ _ PersonClass"，引用自: PeopleData.o中的objc-class-ref
ld:找不到体系结构i386的符号
clang:错误:链接器命令失败，退出代码为1(使用-v查看调用)

任何人都可以告诉我如何绕过此方法?

顺祝商祺，
拉斯

在此先感谢:)

Hi Everyone,

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

<PEOPLE>
<PERSON NAME="KAREL" AGE="23" />
<PERSON NAME="KEES" AGE="23" />
</PEOPLE>

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;

@end
</pre>

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];
currentPerson.name = [attributeDict objectForKey:@"NAME"];
currentPerson.age = [attributeDict objectForKey:@"AGE"];

[allPeople addObject:currentPerson ];
currentPerson = nil;
}
}</pre>

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,
Lars

Thanks in advance :)

currentPerson

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