How to use XMLReader

Question

I am trying to make an app in objective-c that will parse an xml document like so using XMLReader (https://github.com/amarcadet/XMLReader):

    <episodes>
  <title>title title title</title>
  <link>link link link</link>
  <description>description description description</description>
  <item>
    <title>title title title</title>
    <link>link link link</link>
    <description>description description description</description>
  </item>
  <item>
...
</episodes>

I honestly have no idea how I'm supposed to do this. I have already imported the two files included in the zip, but when I try to call

NSData *data = http://link.to.xml/file // some data that can be received from remote service
NSError *error = nil;
NSDictionary *dict = [XMLReader dictionaryForXMLData:data 
                                             options:XMLReaderOptionsProcessNamespaces 
                                               error:&error];

it crashes giving me a SIGABRT on main thread. Can anyone help with this??? Also, how do I get the resulting NSArray or NSDictionary into a table view?

score 1 · Answer 1 · edited May 23 '17 at 12:11

1

Check the post by Troy http://troybrant.net/blog/2010/09/simple-xml-to-nsdictionary-converter/

Also, There are plenty of examples out there which can get you started. Check out the answers here for a similar question: Xml parsing in iOS tutorial always good idea to code through some tutorials before actual implementation.

edited May 23 '17 at 12:11

Community

1
1

answered Aug 21 '13 at 17:41

Obj-Swift

2,802
3
29
50

Do you recommend any one of those? Which one would you use? – TheMacMini09 Aug 21 '13 at 17:48
check the first link by Troy Brant. XMLReader was originated from his project so his example will clear your doubts. – Obj-Swift Aug 21 '13 at 17:49

Abizern · Answer 2 · 2013-08-21T17:59:31.760

1

You can't just write:

NSData *data = http://link.to.xml/file // some data that can be received from remote service

To get data from a URL. At least use something like NSData's +dataWithContentsOfURL:, except that it going to be synchronous and not very user friendly.

I don't think your problem is the data parsing at this point; you're having trouble getting the data which is a whole subject in itself, apart from parsing XML. You could start with the URL Loading System Programming Guide which will show you how to get data properly.

edited Aug 21 '13 at 17:59

answered Aug 21 '13 at 17:48

Abizern

146,289
39
203
257

oops, thats not actually what I had, it was NSData *data = [NSURL URLWithString:@"http://link.to.xml/file"] – TheMacMini09 Aug 21 '13 at 18:09
That won't work either, that creates an NSURL object not an NSData object. – Abizern Aug 21 '13 at 18:28
So how could I make an NSData object out of an NSURL? – TheMacMini09 Aug 22 '13 at 13:10
`NSData *xmlData = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"link_to_xml_file"]];` As I tried to hint at in the answer. – Abizern Aug 22 '13 at 13:19

How to use XMLReader

2 Answers2