How to parse XML Attributes with XMLParser delegates - iphone

getting pretty despirate here.. how on earth do I parse xml that have attributes in them.. I am completely lost,
this is what the xml that I am trying to parse looks like..
<Rows>
<Row SKATERID="706" MANUFACTURER="A-DZG" ISFACT="F" ISSKATE="F"/>
<Row SKATERID="318" MANUFACTURER="A.R.E." ISFACT="F" ISSKATE="T"/>
//...
</Rows>

Using your NSXMLParser Delegate method:
Updated my code. Here is the code which parses your XML.
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
if([elementName isEqualToString:#"Row"])
{
myAttrDict = [[NSDictionary alloc] initWithDictionary:attributeDict];
}
if([elementName isEqualToString:#"Rows"]
{
rowsArray = [[NSMutableArray alloc] init];
}
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if([elementName isEqualToString:#"Row"])
{
[rowsArray addObject:myAttrDict];
[myAttrDict release],myAttrDict = nil;
}
}
- (void)parserDidEndDocument:(NSXMLParser *)parser
{
NSLog(#"Rows Array: %#",rowsArray);
}

Related

Is possible parsing xml file that contains only one node by using NSXMLParser

As a beginner, I have read about NSXMLParser and try to implement a parser for parsing an xml
<?xml version="1.0" encoding="UTF-8"?>
<a>Some text here</a>
my implementation
-(OneNodeXMLParser*)initOneNodeXMLParser{
appDelegate = (OneNodeXMLParser*)[[UIApplication sharedApplication]delegate];
return self;
}
-(void)parser:(NSXMLParser*) parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
NSLog(#"%s",__PRETTY_FUNCTION__,nil);
if([elementName isEqualToString:#"a"]){
// init some varibles
}
NSLog(#"Starting processing");
}
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
NSLog(#"%s",__PRETTY_FUNCTION__,nil);
NSLog(#"%s",string);
}
-(void) parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
NSLog(#"%s",__PRETTY_FUNCTION__,nil);
NSLog(#"Finishing processing");
}
What should I modify to parse the file successfully?
In your .h file declare a NSMutableString *store;
And change the following methods like:
-(void)parser:(NSXMLParser*) parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
if([elementName isEqualToString:#"a"])
{
store = [[NSMutableString alloc] init];
}
NSLog(#"Starting processing");
}
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
NSLog(#"%s",string);
if (store != nil)
{
[store appendString:string];
}
}
-(void) parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
NSLog(#"Finishing processing String : %#", store);
}
You can use that string variable store for future use.

NSXMLParser Parsing Attributes

How do you extract attributes from XML using NSXML parser??
Heres my xml:
<item>
<title>Button hails 'amazing' win</title>
<description>Jenson Button hailed yesterday's crazy Canadian Grand Prix victory as the best of his Formula One career.
</description>
<link>http://www.skysports.com/story/0,19528,12433_6986809,00.html</link>
<guid isPermaLink="false">12433_6986809</guid>
<pubDate>Mon, 13 Jun 2011 06:21:00 GMT</pubDate>
<category>News Story</category>
<enclosure type="image/jpg" url="http://img.skysports.com/11/06/128x67/Canadian-GP-Jenson-Button-celebrates1_2609288.jpg" length="123456" />
</item>
I need to get the url from the enclosure tags.
Thanks
if([elementName isEqualToString:#"enclosure"])
{
NSString *urlValue=[attributeDict valueForKey:#"url"];
NSString *urlValue=[attributeDict valueForKey:#"type"];
NSString *urlValue=[attributeDict valueForKey:#"length"];
}
you need to use NSXMLParser and its delegate functions
-
(BOOL) parse:(NSData *)xmlData
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
}
then you need to use some thing like this
if([elementName isEqualToString:#"enclosure"])
{
NSMutableDictionary *Dict=[NSMutableDictionary dictionary];
[Dict setObject:[attributeDict valueForKey:#"url"] forKey:#"url"];
[categoryDict setObject:[attributeDict valueForKey:#"type"] forKey:#"type"];
}
The method...
(void) parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName
namespaceURI:(NSString *)namespaceURI
qualifiedName:(NSString *)qualifiedName
attributes:(NSDictionary *)attributeDict
Gives you a dictionary of attributes and their keys (attributeDict)... look for an entry keyed "url" when the elementName is equal to "enclosure"...
Here is explanation:
Example xml with attribute:
Use xml delegate method:
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName
namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
attributes:(NSDictionary *)attributeDict
{
if ([elementName isEqualToString:#"remoteContent"]){
NSString* href = [attributeDict objectForKey:#"href"];
NSLog(#"href %#",href);
[someArray addObject:href];
}
}

need help to parse xml string

i need to parse this xml file
<?xml version="1.0" encoding="UTF-8"?>
<imageset>
<category>
<image>SQUIRREL</image>
<image>FOX</image>
<image>TIGER</image>
<image>LION</image>
</category>
</imageset>
i use this code to parse this.
- (void)viewDidLoad {
NSXMLParser *parser = [[NSXMLParser alloc] initWithData:[NSData dataWithContentsOfFile:[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"Config.xml"]]];
[super viewDidLoad];
[parser setDelegate:self];
[parser parse];
NSLog(#"test.......... %#",test);
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
if ([elementName isEqualToString:#"image"]) {
test = [[NSMutableArray alloc]init];
addelements = TRUE;
}
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
if ([elementName isEqualToString:#"image"]) {
addelements = FALSE;
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
[test addObject:string];
}
But it adds only last object,displays like this in console.
test.......... (
LION,
"\n\n",
"\n"
)
I need to add all image names in the xml file means {SQUIRREL,FOX,TIGER,LION}
how can i done,can any one please help me.
Thank u in advance.
Your problem is this method:
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
if ([elementName isEqualToString:#"image"]) {
test = [[NSMutableArray alloc]init];
addelements = TRUE;
}
}
Every time an image tag starts, you overwrite the test variable with a new instance of NSMutableArray (leaking the previous object). You need to change it to something like this:
if (!test) test = [[NSMutableArray alloc]init];
That is: only allocate a new array if there wasn't an old one already.
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
[mutableString release];
mutableString = [[NSMutableString alloc] init];
if ([elementName isEqualToString:#"image"]) {
if( !test ) test = [[NSMutableArray alloc] initWithCapacity: 10];
}
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
if ([elementName isEqualToString:#"image"])
[test addObject: mutableString];
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
[mutableString appendString: string];
}
where test and mutableString are ivars declared in your view controller's header
Note: this is very simplified version.
#Mahesh Babu yes you can also add the image by giving the name only as for example......
[UIImage imageNamed:#"SQUIRREL.jpg"];

get attribute values from returned XML

This is the xml I am getting from web:
<?xml version="1.0"?>
<abc>87C4A556-B7E5-5AE4-81FE-86BE0C6306E1</abc>
<abc2>P29077758</abc2>
<abc3>55AGD99D</abc3>
<abc4>147</abc4>
<abc5>1286259226</abc5>
<abc6>USA</abc6>
<abc7>US</abc7>
and using this to get attribute:
-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if( [elementName isEqualToString:#"a"])
{
recordResults = FALSE;
// greeting.text = soapResults;
[soapResults release];
soapResults = nil;
}
}
Something like that, but I don't have any idea how can I get attribute from returned xml and assign those returned variables into my created variable. How can I do this?
http://blancer.com/tutorials/i-phone/76999/parsing-xml-files/ hope this helps !!!
I highly recommend using TouchXML to do your XML parsing.
I personally had all kinds of issues with NSXMLParser and ended up using TouchXML. Works a treat!
You should implement the following methods:-
One way you can use is :-
(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName
namespaceURI:(NSString *)namespaceURI
qualifiedName:(NSString *)qName
attributes:(NSDictionary *)attributeDict
{
//check that the element is the one you want. If it is then initialize the string in which you want to store the value.
if(elementName isEqualToString:#"abc")
{
tempString = [[NSMutableString alloc] init];
}
}
(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
[tempString appendString:string];
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName
namespaceURI:(NSString *)namespaceURI
qualifiedName:(NSString *)qName
{
if(elementName isEqualToString:#"abc")
{
self.StringToStore = tempString;
}
}

How do I parse this SOAP response in my iPhone application?

I am getting SOAP response and when parsing the response I am getting this: (As you can see from result which is currently stored as NSString is NSLoged itself contain xml format data)
<Menus>
<Table1>
<Restaurant_Name>CHICK-FIL-A</Restaurant_Name>
<Restaurant_id>2748</Restaurant_id>
<Phone>(404) 371-1466</Phone>
<billing_city>DECATUR</billing_city>
<billing_state>GA</billing_state>
<billing_zip_code>30030</billing_zip_code>
<billing_addr1>105 EAST TRINITY PLACE</billing_addr1>
</Table1>
</Menus>
The Code for the above generated response:
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict{
if([elementName isEqualToString:#"GetMenusByZipCodeResult"])
{
if(!soapResults)
{
soapResults = [[NSMutableString alloc] init];
}
recordResults = TRUE;
}
}
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
if(recordResults)
{
[soapResults appendString:string];
}
//NSLog(#" soap: %#", soapResults);
}
-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName
{
if([elementName isEqualToString:#"GetMenusByZipCodeResult"])
{
NSLog(#"soapResult FINAL : %#",soapResults);
recordResults = FALSE;
result.text = soapResults;
[soapResults release];
soapResults = nil;
}
}
The above mention data is result of soapResult.
How to read this data? I tried to reparse it but it is not helping.
Please help me.
If you want a simple XML to NSDictionary converter (including the text nodes), check out http://troybrant.net/blog/2010/09/simple-xml-to-nsdictionary-converter/
Use an XML parser like NSXMLParser
http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSXMLParser_Class/Reference/Reference.html