Is there a way that I can format an XML file in the proper way when creating it programmatically?
有没有办法在编程时以正确的方式格式化XML文件？
For example, if I use this code to create a simple XML File:
例如，如果我使用此代码创建一个简单的XML文件：
NSXMLElement *fallback_driver = [[NSXMLElement alloc] initWithName:@"fallback-driver"];
NSXMLElement *folder = [[NSXMLElement alloc] initWithName:@"folder"];
[folder setStringValue:[ads_make objectValueOfSelectedItem]];
NSXMLElement *filename =[[NSXMLElement alloc] initWithName:@"filename"];
[filename setStringValue:ads_driver_name_selected];
[fallback_driver addChild:folder];
[fallback_driver addChild:filename];
NSXMLElement* rootNode = [ads_user_printxml rootElement];
[rootNode addChild:fallback_driver];
When this is run, I would like to output to be as per the commented section in the image below, not the actual XML (that is not commented).
当这个运行时，我想按照下图中的注释部分输出，而不是实际的XML（没有注释）。
How I can format the XML file that way? Thanks!
我如何以这种方式格式化XML文件？谢谢！
P.S.
附：
Thanks for the answer.. However, I would like to convert the NSXMLDocument that I have into NSData for saving...
谢谢你的答案。但是，我想将我拥有的NSXMLDocument转换为NSData以便保存...
I am trying
我在尝试
NSData *newData = [[ads_user_printxml XMLDataWithOptions:NSXMLNodePrettyPrint]XMLData];
however I am getting a warning that "'NSData' may not respond to '-XMLData', where before I added the XMLDataWithOptions it was working fine. I also tried the method 'XMLStringWithOptions' (as you stated - but figured that data was more appropriate), but the same warning was generated.
但是我收到警告“'NSData'可能没有响应'-XMLData'，在我添加XMLDataWithOptions之前它工作得很好。我也尝试了'XMLStringWithOptions'方法（如你所说 - 但是认为数据更多适当的），但产生了相同的警告。
Any ideas? Thanks a lot!
有任何想法吗？非常感谢！
1 个解决方案
#1
11
You can output a nicely formatted XML string using the following:
您可以使用以下命令输出格式良好的XML字符串：
NSString* string = [xmlNode XMLStringWithOptions:NSXMLNodePrettyPrint];
Note that because NSXMLDocument and NSXMLElement are subclasses of NSXMLNode, you can do this with those classes also.
请注意，因为NSXMLDocument和NSXMLElement是NSXMLNode的子类，所以您也可以对这些类执行此操作。
If you want NSData instead of a string, just do:
如果你想要NSData而不是字符串，只需：
NSData* xmlData = [xmlNode XMLDataWithOptions:NSXMLNodePrettyPrint];
#1
11
You can output a nicely formatted XML string using the following:
您可以使用以下命令输出格式良好的XML字符串：
NSString* string = [xmlNode XMLStringWithOptions:NSXMLNodePrettyPrint];
Note that because NSXMLDocument and NSXMLElement are subclasses of NSXMLNode, you can do this with those classes also.
请注意，因为NSXMLDocument和NSXMLElement是NSXMLNode的子类，所以您也可以对这些类执行此操作。
If you want NSData instead of a string, just do:
如果你想要NSData而不是字符串，只需：
NSData* xmlData = [xmlNode XMLDataWithOptions:NSXMLNodePrettyPrint];