Best to use an objective-c parsing library.
This article has a good run down of some of the available ones:
http://www.raywenderlich.com/553/how-to-chose-the-best-xml-parser-for-your-iphone-project
Also, this page has full code samples using one of the libraries:
http://www.raywenderlich.com/725/how-to-read-and-write-xml-documents-with-gdataxml
i use the TBXML and works perfectly
The only problem are the accented characters, in Brazil we use a lot, now you do not exist for problems with this ...
is permitted by Apple Store submission
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Follow this answer.May this will help you a lot. Use XMLReader to parse xml in ios.This file efficiently will parse xml for you in to a easily manageable NSDictionary.
XML Parsing