iOS XML解析

1、XML文件：LanguagesName.xml

<?xml version="1.0" encoding="UTF-8"?>

<root>

    <language>

       <id>1</id>

       <name>English</name>

    </language>

    <language>

       <id>2</id>

        <name>简体中文</name>

    </language>

</root>

2、头文件：LangXMLParser.h

#import "LangXMLElement.h"

#import <Foundation/Foundation.h>

@interface LangXMLParser :NSObject<NSXMLParserDelegate>

- (NSMutableDictionary *)startParser;

@end

3、源文件：LangXMLParser.m

#import "LangXMLParser.h"

@implementation LangXMLParser{

   NSXMLParser *parser;

    NSMutableDictionary *mLangDict;

   LangXMLElement *mRootElement;

   LangXMLElement *mCurrentElement;

}

-(NSMutableDictionary *)startParser{

    NSString *xmlFilePath = [[NSBundlemainBundle]pathForResource:@"LanguagesName"ofType:@"xml"];

   NSData *data = [[NSDataalloc]initWithContentsOfFile:xmlFilePath];

   parser = [[NSXMLParseralloc]initWithData:data];

   parser.delegate =self;

    

   if([parser parse]){

       if(mLangDict ==nil){

           mLangDict = [[NSMutableDictionaryalloc] init];

        }

        [mLangDictremoveAllObjects];

        

        NSMutableArray *subs =mRootElement.subElements;

       for(int i =0; i < [subs count];i++){

           LangXMLElement *langElement = [subs objectAtIndex:i];

           NSArray *subElements = langElement.subElements;

            [mLangDictsetObject:[subElements[1]elementText] forKey:[subElements[0]elementText]];

        }

    }

    returnmLangDict;

}

-(void)parserDidStartDocument:(NSXMLParser *)parser

{

    mRootElement =nil;

    mCurrentElement =nil;

    mLangDict = nil;

}

-(void)parserDidEndDocument:(NSXMLParser *)parser

{

    mCurrentElement =nil;

}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict

{

    if(mRootElement ==nil){

        mRootElement = [[LangXMLElementalloc]init];

        mCurrentElement =mRootElement;

        

    }else{

       LangXMLElement *newElement = [[LangXMLElementalloc]init];

        newElement.parent =mCurrentElement;

        

        [mCurrentElement.subElementsaddObject:newElement];

       mCurrentElement = newElement;

    }

    

    mCurrentElement.elementName = elementName;

    mCurrentElement.attributes = attributeDict;

}

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName

{

    mCurrentElement =mCurrentElement.parent;

}

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string

{

    if([mCurrentElement.elementTextlength] > 0){

        mCurrentElement.elementText = [mCurrentElement.elementTextstringByAppendingString:string];

    }else{

        mCurrentElement.elementText = [NSMutableStringstringWithString:string];

    }

}

@end