how to use web service with xml parsing in android application?

An XML parser converts an XML document into an XML DOM(Document Object Model) object - which can then be manipulated with a Java Code.

Type of XML Parser :

  XML SAX Parser(Simple API for XML): It gives an event based approach to XML parsing. It means that instead of going from node to node, it goes from event to event.

  XML Pull Parser: It is optimal for applications that require fast and a small XML parser. It should be used when all the process has to be performed quickly and efficiently to input elements.

and many other...!