How to refresh a local XML File?

Ia开发者_开发问答m developing an iPhone Application which is parsing a local XML File. How can I refresh (overwrite) this XML on the iPhone, if my XML File on the Webserver has been changed.

The XML File is really small (30 KB).

Thank you in advance

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You’ll need to copy the XML file to the user home folder and then update it there.

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If it works like Flash, then appending a random variable, or a timestamp, to the end of the path to the XML file might make iOS refresh it. As in "[path to file]/myXMLfile.xml?x=123456"