使用Objective C的xml字符串文件

Question

How i can make an xml file from NSString object?

In other words, how can I parse XML from an NSString object?

Answer 1

If this is for the iPhone, you might want to take a look at this question which goes over doing it on the iPhone, using the user defaults method.

For reference, on Mac OS X one could use the writeToFile:atomically:encoding:error: NSString Method.

EDIT : To parse the XML within an NSString, you can use the NSXMLParser class. This class does not have a method to initialize it with an NSString , so you have to use its initWithData: method like this:

NSData *data = [myString dataUsingEncoding:NSUTF8StringEncoding];
NSXMLParser *xmlParser = [[NSXMLParser alloc] initWithData:data];

And that will initialize it with the NSString 's data.

Of course, you have to learn how to parse the XML itself using this class. You can take a look at this question for some tips, or you can google around for some tutorials, such as Apple's very own walkthrough . Here is another walkthrough for using the class.

Answer 2

如果您要解析的xml为plist格式，则可以使用方便的NSPropertyListSerialization类方法为您解析为一个plist对象。