how to use specific encoding on NSXMLParser?

how to use specific encoding on NSXMLParser ?

It default on utf-8 ,I wan开发者_JAVA技巧t to use on tis-620 any idea?

---

If there is a correct encoding info inside the xml (first line, e.g. <?xml version="1.0" encoding="UTF-8"?>) everything should work out of the box.