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PONSMutableString issue with NSXMLParser
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copied!<p>I am having a heck of a time with this -- I am trying to parse an XML file and set the text in a NSMutableString variable in order to later fill in a label's text as you can see below. </p> <p>In my .h I have the following (simplified);</p> <pre><code>NSMutableString *contentsOfCurrentXMLProperty; @property (nonatomic,retain) NSMutableString *contentsOfCurrentXMLProperty; </code></pre> <p>In my .m:</p> <pre><code>-(void) parseData { NSXMLParser *parser = [[NSXMLParser alloc] initWithData:myData]; [parser setDelegate:self]; [parser parse]; [parser release]; } - (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict { if ([elementName isEqualToString:@"Title"]) { NSLog(@"FOUND TITLE!"); contentsOfCurrentXMLProperty = [NSMutableString setString:@""]; } } -(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { if ([elementName isEqualToString:@"TITLE"]) { myLabel.text = [contentsOfCurrentXMLProperty stringByReplacingOccurrencesOfString:@"[br]" withString:@"\n"]; } } - (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string { [self.contentsOfCurrentXMLProperty appendString:string]; } </code></pre> <p>When I run my app, the data is downloaded and parsed correctly. I run into issues when my observer fires off the event again. The parseData method is called and I get an error that I have traced to the line that reads: "contentsOfCurrentXMLProperty = [NSMutableString setString:@""]; " </p> <p>What is the proper way to create or init a NSMutableString variable for me to use over and over? When/Where is the best place to release it? How do I essentially clear the variable so that when the observer fires off the parseData method it will again be able to set "contentsOfCurrentXMLProperty"?</p>

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