ios - How do I get a specific element while paring XML? -

i "first subitem" xml document. far works seems store last subitem. program reading straight through xml doc , stopping once finds want. maybe not clear on how stop parsing after has found first item. need tell program stop after finds the first item or add them array , pick out specific part? great.

xml doc

<file>main file      <item>            <subitem>first subitem</subitem>      </item>  </file>  <file>main file      <item>            <subitem>second subitem</subitem>      </item>  </file>  <file>main file      <item>            <subitem>third subitem</subitem>      </item>  </file> 

swift file

class parsethis {   var strxmldata:string = ""  var currentelement:string = ""  var passdata:bool=false  var passname:bool=false  var itemneeded = ""  // set parsing   func parser(parser: nsxmlparser, didstartelement elementname: string, namespaceuri: string?, qualifiedname qname: string?,  attributes attributedict: [string : string]) {  currentelement=elementname;     if(elementname=="file" || elementname=="item" ||   elementname=="subitem")     {         if(elementname=="subitem"){           passname=false;         }         passdata=true;     } }  func parser(parser: nsxmlparser, didendelement elementname: string, namespaceuri: string?, qualifiedname qname: string?) {     currentelement=""; currentelement=elementname;     if(elementname=="file" || elementname=="item" ||   elementname=="subitem"){       if(elementname=="subitem"){       passname=false;         }         passdata=false;     }  }     func parser(parser: nsxmlparser, foundcharacters string: string) {     if(passname){         strxmldata=strxmldata+"\n\n"+string     }      if(passdata)     {      itemneeded = string    } 

a super simplistic way of looking @ need didfindcharacters , didendelement. every time didfindcharacters save them variable. every time end element check whether correct element name , whether it's first of element name type. this:

var resultstring : string? var finalresultobject : string?  public func parser(parser: nsxmlparser, didstartelement elementname: string, namespaceuri: string?, qualifiedname qname: string?, attributes attributedict: [string : string]) { }  public func parser(parser: nsxmlparser, foundcdata cdatablock: nsdata) {     resultstring = string(data: cdatablock, encoding: nsutf8stringencoding) }  public func parser(parser: nsxmlparser, foundcharacters string: string) {     if(resultstring == nil)     {         resultstring = ""     }     resultstring! += string }  public func parser(parser: nsxmlparser, didendelement elementname: string, namespaceuri: string?, qualifiedname qname: string?) {     if(elementname == "subitem" && finalresultobject == nil)     {         //this first element of type, save whatever want.         finalresultobject = resultstring     }     resultstring = nil }  public func parser(parser: nsxmlparser, parseerroroccurred parseerror: nserror) {     //log in debug if to. }