如何编写XML文件？

发布于 2024-09-25 21:05:41 字数 134 浏览 0 评论 0原文

我想在我的应用程序中编写一个不太复杂但很大的文件，并能够通过邮件发送它（使用 MFMailComposeViewController）由于 NSXMLElement 和相关类未移植到 iPhone SDK，我有什么选项来创建 XML 文档？提前致谢。

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棒棒糖 2024-10-02 21:05:41

我建议使用 KissXML。作者的情况与您类似，并围绕 libxml 创建了一个 NSXML 兼容的 API 包装器。他在博客上此处讨论了选项和决定。

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盗琴音 2024-10-02 21:05:41

无耻的自我推销：KSXMLWriter

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守望孤独 2024-10-02 21:05:41

尝试使用开源适用于 iOS 的 XML 流编写器：

用 Objective-C 编写，单个 .h 。和 .m 文件
一个 @protocol 用于命名空间支持，一个 @protocol 不支持

示例：

// allocate serializer
XMLWriter* xmlWriter = [[XMLWriter alloc]init];

// start writing XML elements
[xmlWriter writeStartElement:@"Root"];
[xmlWriter writeCharacters:@"Text content for root element"];
[xmlWriter writeEndElement];

// get the resulting XML string
NSString* xml = [xmlWriter toString];

这会生成以下 XML 字符串：

<Root>Text content for root element</Root>

Try the open source XML stream writer for iOS:

Written in Objective-C, a single .h. and .m file
One @protocol for namespace support and one for without

Example:

// allocate serializer
XMLWriter* xmlWriter = [[XMLWriter alloc]init];

// start writing XML elements
[xmlWriter writeStartElement:@"Root"];
[xmlWriter writeCharacters:@"Text content for root element"];
[xmlWriter writeEndElement];

// get the resulting XML string
NSString* xml = [xmlWriter toString];

This produces the following XML string:

<Root>Text content for root element</Root>

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十年不长 2024-10-02 21:05:41

这是 NSString 构建的家庭作业。抽象地说，创建一个如下协议：

@protocol XmlExport
-(NSString*)xmlElementName;
-(NSString*)xmlElementData;
-(NSDictionary*)xmlAttributes;
-(NSString*)toXML;
-(NSArray*)xmlSubElements;
@end

确保您保存的所有内容都实现它，并使用如下内容构建 XML：

-(NSString*)toXML {
    NSMutableString *xmlString;
    NSString *returnString;

    /* Opening tag */
    xmlString = [[NSMutableString alloc] initWithFormat:@"<%@", [self xmlElementName]];
    for (NSString *type in [self xmlAttributes]) {
        [xmlString appendFormat:@" %@=\"%@\"", type, [[self xmlAttributes] valueForKey:type]];
    }   
    [xmlString appendString:@">"];

    /* Add subelements */
    for (id<XmlExport> *s in [self xmlSubElements]) {
        [xmlString appendString:[s toXML]];
    }

    /* Data */
    if ([self xmlElementData]) {
        [xmlString appendString:[self xmlElementData]];
    }

    /* Close it up */
    [xmlString appendFormat:@"</%@>", [self xmlElementName]];

    /* Return immutable, free temp memory */
    returnString = [NSString stringWithString:xmlString];
    [xmlString release]; xmlString = nil;

    return returnString;
}

It's a homework exercise in NSString building. Abstractly, create a protocol like:

@protocol XmlExport
-(NSString*)xmlElementName;
-(NSString*)xmlElementData;
-(NSDictionary*)xmlAttributes;
-(NSString*)toXML;
-(NSArray*)xmlSubElements;
@end

Make sure everything you're saving implements it and build the XML with something like the following:

-(NSString*)toXML {
    NSMutableString *xmlString;
    NSString *returnString;

    /* Opening tag */
    xmlString = [[NSMutableString alloc] initWithFormat:@"<%@", [self xmlElementName]];
    for (NSString *type in [self xmlAttributes]) {
        [xmlString appendFormat:@" %@=\"%@\"", type, [[self xmlAttributes] valueForKey:type]];
    }   
    [xmlString appendString:@">"];

    /* Add subelements */
    for (id<XmlExport> *s in [self xmlSubElements]) {
        [xmlString appendString:[s toXML]];
    }

    /* Data */
    if ([self xmlElementData]) {
        [xmlString appendString:[self xmlElementData]];
    }

    /* Close it up */
    [xmlString appendFormat:@"</%@>", [self xmlElementName]];

    /* Return immutable, free temp memory */
    returnString = [NSString stringWithString:xmlString];
    [xmlString release]; xmlString = nil;

    return returnString;
}

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