如何在ios中进行肥皂网服务的总结？

Question

我想做网络服务的总结字段。

我有4个标签。它向我展示肥皂网服务的领域。我的3个标签可以，但我不知道我是如何收集总数的？

的Label1（AmountX）= 100，Label2的（AmountY）= 200，LABEL3（AmountZ）= 300，总（AmountX + AmountY + AmountZ） =（必须是600）

didStart

-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:
(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary  
  *)attributeDict{

 if ( [elementName isEqualToString:@"AmountX"] ) {

  if (!soapResults) {

 soapResults = [[NSMutableString alloc] init];

   }

  recordResults = YES;


  }

 if ( [elementName isEqualToString:@"AmountY"] ) {

 if (!soapResults) {

  soapResults = [[NSMutableString alloc] init];


   }

   recordResults = YES;
   }
  if ( [elementName isEqualToString:@"AmountZ"] ) {

 if (!soapResults) {

  soapResults = [[NSMutableString alloc] init];


  }

   recordResults = YES;
   }




  if ( [elementName isEqualToString:@"Total"] ) {

 if (!soapResults) {

  soapResults = [[NSMutableString alloc] init];


  }

   recordResults = YES;

      }

didEnd

 - (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:   
   (NSString *)namespaceURI qualifiedName:(NSString *)qName{


   if ( [elementName isEqualToString:@"AmountX"] ) {
     Label1.text = soapResults ;
     soapResults = nil; 
     recordResults = NO;

     }


    if ( [elementName isEqualToString:@"AmountY"] ) {

    Label2.text = soapResults ;

     soapResults = nil;
   recordResults = NO;

     }


     if ( [elementName isEqualToString:@"AmountZ"] ) {

    Label3.text = soapResults ;

     soapResults = nil;
   recordResults = NO;

     }




      //  For Total ???
     if ( [elementName isEqualToString:@"Total"] ) {

    Total.text = soapResults ;

     soapResults = nil;
   recordResults = NO;

     }