从 NSString 解析 XML 以获取值 [英] Parsing XML from NSString to get values

问题描述

这个问题是关于在 xcode 中操作 NSString 的.

This question is for manipulating NSString in xcode.

我有一个从 Web 获取的 XML 文本字符串，看起来像这样

I have a XML text string that I get from the web that looks like this

<current temperature="73" day="Mon" humidity="59" windspeed="10"></current>

如何从该字符串中获取单个值并将它们放入我的 NSString 变量中?

How can I get individual values from this string and put them in my NSString variables?

例如

NSString *tempStr = ??
NSString *dayStr = ??
NSString *windspeedStr = ??

推荐答案

首先，按照 RaptureXML 项目站点.

要解析给定的单个行，请使用以下代码段 - 您的输入以 inXmlString;

For parsing the single given line, use the following snippet - your input is passed as inXmlString;

//transform string into an XML DOM
RXMLElement *rootNode = [RXMLElement elementFromXMLString:inXmlString 
                                             withEncoding:NSUTF8StringEncoding];
if (rootNode == nil || ![rootNode isValid])
{
    //do something, we failed!
}
else 
{
    NSString *temperature = [rootNode attribute:@"temperature"];
    NSString *day = [rootNode attribute:@"day"];
    NSString *windspeed = [rootNode attribute:@"windspeed"];
}

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