iOS による XML ファイルの解析

NSXMLParser はここで解析に使用されます。これは Apple 独自の XML 解析ライブラリです: http://www.php.cn/

XML ファイルを Xcode に追加します:

<?xml version="1.0" encoding="ISO-8859-1"?>
<root>
<Shop shoplocation="beijing">
    <id>001</id>
    <name>John</name>
    <url>Reminder</url>
    <info>Don&#39;t forget the meeting!</info>
</Shop>
<Shop shoplocation="dongcheng">
    <id>002</id>
    <name>Jack</name>
    <url>cc</url>
    <info>how are you!</info>
</Shop>
<Shop shoplocation="haidian">
    <id>003</id>
    <name>Tom</name>
    <url>bb</url>
    <info>I am fine!</info>
</Shop>
</root>

最初に

   NSString* path =  [[NSBundle mainBundle] pathForResource:@"shop" ofType:@"xml"];
    NSData *data = [[NSData alloc] initWithContentsOfFile:path options:(NSDataReadingMappedIfSafe) error:nil];
    NSXMLParser *parser=[[NSXMLParser alloc] initWithData:tmpdata];
<span style="white-space:pre">	</span>[parser setDelegate:self];
	[parser parse];
	[parser release];
    [self parseShopListFromResponse:data];

を読み出し、次にそれを解析します:

#pragma mark NSXMLParser delegate methods
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName
  namespaceURI:(NSString *) namespaceURI qualifiedName:(NSString *)qName
	attributes: (NSDictionary *)attributeDict {
    self.currentTag = elementName;
	if ([elementName isEqualToString:@"root"]) {
		self.tmpList = [[NSMutableArray alloc] init];
	}else if ([elementName isEqualToString:@"Shop"]) {
		self.tmpShop = [[ShopData alloc] init];
        NSArray* array = [attributeDict allKeys];
        NSString* key = [array lastObject];
        NSString*s  = [attributeDict objectForKey:key];
        self.tmpShop.info = s;
	}
}

-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
    if (self.currentString == nil) {
        self.currentString = [[NSMutableString alloc] initWithString:@""];
    }
    
    if ([self.currentTag isEqualToString:@"name"] ||
        [self.currentTag isEqualToString:@"id"] ||
        [self.currentTag isEqualToString:@"url"] ||
        [self.currentTag isEqualToString:@"info"]) {
        [self.currentString appendString:string];
	}
}

-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
 
	if ([elementName isEqualToString:@"Shop"]) {
		[self.tmpList addObject:self.tmpShop];
        [self.tmpShop release];
	} if ([elementName isEqualToString:@"name"]) {
        self.tmpShop.name = [self.currentString copy];
        [self.currentString setString:@""];
	}else if ([elementName isEqualToString:@"id"]) {
		self.tmpShop._id = [self.currentString copy];
        [self.currentString setString:@""];
	}else if ([elementName isEqualToString:@"url"]) {
		self.tmpShop.url = [self.currentString copy];
        [self.currentString setString:@""];
	}else if ([elementName isEqualToString:@"info"]) {
//		self.tmpShop.info = [self.currentString copy];
//        [self.currentString setString:@""];
	}
}

- (void)parserDidStartDocument:(NSXMLParser *)parser {
	NSLog(@"开始解析xml文件");
}

- (void)parserDidEndDocument:(NSXMLParser *)parser {
	
	[self.tableView reloadData];
	NSLog(@"解析xml文件完成");
}

Shopdata の構造は次のとおりです。

@property (nonatomic,retain) NSString *name;
@property (nonatomic,retain) NSString *url;
@property (nonatomic,retain) NSString *_id;
@property (nonatomic,retain) NSString *info;
@property (nonatomic, retain) UIImage *appIcon;

上記は、XML ファイルを解析する IOS の内容です。その他の関連コンテンツについては、PHP 中国語 Web サイト (www.php.cn) に注目してください。