parse multiple elements of xml in objective-c - objective-c

Question

I need to parse multiple elements (id1 and id2) in such kind of xml:
<name>
<id1>104634449</id2>
<id2>22014870</id2>
</name>
<name>
<id1>104634433</id2>
<id2>220143210</id2>
</name>
I use such code:
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI: (NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
isName = [elementName isEqualToString:#"name"];
isId1 = [elementName isEqualToString:#"id1"];
isId2 = [elementName isEqualToString:#"id2"];
if(isName){
name = [Name new];
}
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
if (isName){
[names addObject:name];
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
if (isId1){
[name setId1:string];
}
if (isId2){
[name setId2:string];
}
}
But only one element (id1 or id2) is set in object name. What I do wrong?
In debug I get this:
id1 = #"\n"
id2 = #"22014870"

Answer 1

The problem is that when you finish to read id2 isName is set to NO, so you don't really add it to your array.
This is the sequence of actions:
The name element starts;
The id1 element starts;
The id1 element ends;
The id2 element starts;
The id2 element ends;
The name element ends.
At point 4 occurs the last assignment of isName, set to:
isName = [elementName isEqualToString:#"name"];
Which will result false.
The corrected code:
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
if ([elementName isEqualToString: #"name"){
[names addObject:name];
}
}

Answer 2

Before you get too deep in the bowels of XML parsing I would highly recommend using GDataXMLNode (also available as a CocoaPod)
Then, to get an idea of how to use it, check out this tutorial, How To Read and Write XML Documents with GDataXML
I know this doesn't directly answer your question but it is really so much simpler to use this library provided by Google.