NSXMLParser rss图片网址？ [英] NSXMLParser rss Image urls?

问题描述

我正在使用nsxmlparser解析rss，我想从rss中获取一些图像...我该怎么做？

所以这里是一个rss的例子

 < p> ;< img scr =IMGURL>< / p> 
  

我如何获得IMGURL

<谢谢，
TC

解决方案

这是一个快速入侵 - 只有你知道字符串不是这样做要改变立场。否则你可能会崩溃。

  //出于演示目的，我们可以说你的< p>< img scr =IMGURL> ;< / p为H.是一个名为sourceString的字符串
 //将其切割成这样的数组并从数组中获取位置
 
 //创建数组
 NSArray * tempArray = [sourceString componentsSeparatedByString ：@\]; 
 
 //这样做了，它创建了一个源字符串对象数组，用
 //分隔，所以在你的tempArray中你会有两个对象
 // objectAtIndex 0将是：< p>< img scr =你不需要这个我们可以忽略它
 // objectAtIndex 1将是你想要的字符串。它将是：IMGURL 
 //所以现在你可以快速创建一个字符串，如
 NSString * imgURL = [[tempArray objectAtIndex：1] description]; 
  

这是一个快速而肮脏的伎俩......但它确实有效！只要数据保持相同的格式。你的电话！

I am parsing rss using nsxmlparser and I would like to get some images from the rss...how can I do that?

so here is an example of the rss

<p><img scr = "IMGURL"></p>

how can I get the "IMGURL"

thanks, TC

解决方案

Here is a quick hack - only do this if you know the strings are not going to change position. Otherwise you risk crashing.

//for demo purposes lets say your <p><img scr = "IMGURL"></p> is a string named sourceString
//chop it up into an array like this and grab it from the arrays position

//create an array 
NSArray *tempArray = [sourceString componentsSeparatedByString:@"\""];

//what this has done, it has create an array of objects from your source string separated by "
//so in your tempArray you will have two objects
// objectAtIndex 0  will be: <p><img scr =    you wont need this so we can ignore it
// objectAtIndex 1  will be the string you want. it will be: IMGURL
// so now you can quickly create a string from it like this
NSString * imgURL = [[tempArray objectAtIndex:1]description]; 

Its a quick and dirty trick... but it works! So long as the data stays the same format. Your call!

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