Problem with NSMutableArray & object retrieval from it, populated using NSXMLParser

[KunalPatel]

Hello,

I'm a newbie to Objective-C & iPhone development, hence please bear with me.

I'm working on an app which loads with UITableView and upon selecting one particular cell called "Address Book" it should load with another UITableView containing all the addresses retrieved from a web request. Using NSXMLParser's delegate methods I'm storing those addresses into a NSMutableArray defined in the loaded view's header file. But the problem occurs when those addresses are being displayed onto the UITableView cells (yes, I have got the count for the number of cells). Can anybody please help me with this problem? I'm stuck on this for days now !!! Following is my code:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

static NSString *CellIdentifier = @"Cell";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}

AddressEntry *entry = (AddressEntry *)[self.addresses objectAtIndex:indexPath.row];

@try
{
    NSLog(@"%@", entry.firstName);
}
@catch (NSException * e) 
{
    @try 
    {
        NSLog(@"%@", entry.lastName);
    }
    @catch (NSException * e) 
    {
        NSLog(@"%@", entry.lastName);
    }
}
[entry release];

return cell;
}

    - (void)parserDidStartDocument:(NSXMLParser *)parser
{
    self.currentElement = nil;
    self.f_Name = nil;
    self.l_Name = nil;
    self.phone = nil;
    self.email = nil;
    count = 0;
    self.addresses = [[NSMutableArray alloc] init];
}

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


if([elementName isEqualToString:@"Entries"])
    {
        count = [[attributeDict valueForKey:@"total"] intValue];
    }
    else if([elementName isEqualToString:@"FirstName"])
    {       
        [self.f_Name release];
        self.f_Name = [[NSString alloc] init];
    }
    else if([elementName isEqualToString:@"LastName"])
    {
        [self.l_Name release];
        self.l_Name = [[NSString alloc] init];
    }
    else if([elementName isEqualToString:@"PhoneNumber"])
    {
        [self.phone release];
        self.phone = [[NSString alloc] init];
    }
    else if([elementName isEqualToString:@"EmailAddress"])
    {
        [self.email release];
        self.email = [[NSString alloc] init];
    }
    else if([elementName isEqualToString:@"Record"])
    {
        [self.addrEntry release];
        self.addrEntry = [[[AddressEntry alloc] init] retain];
    }

[self.currentElement release];
self.currentElement = nil;
self.currentElement = [elementName copy];
}


- (void) parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName 
                                       namespaceURI:(NSString *)namespaceURI 
                                      qualifiedName:(NSString *)qName
{
    //
    if([elementName isEqualToString:@"FirstName"])
        self.addrEntry.firstName = self.f_Name;
    else if ([elementName isEqualToString:@"LastName"])
        self.addrEntry.lastName = self.l_Name;
    else if([elementName isEqualToString:@"PhoneNumber"])
        self.addrEntry.mobile = self.phone;
    else if([elementName isEqualToString:@"EmailAddress"])
        self.addrEntry.emailAddress = self.email;
    else if([elementName isEqualToString:@"Record"])
    {
        [self.addresses addObject:self.addrEntry];
        [self.addrEntry release];
        self.addrEntry = nil;
        /*AddressEntry *e = (AddressEntry *)[self.addresses lastObject];
        NSLog(@"%@ %@ %@ %@", e.firstName, e.lastName, e.mobile, e.emailAddress);
        [e release];*/
    }
}


- (void) parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
    if([currentElement isEqualToString:@"FirstName"])
        self.f_Name = string;
    else if([currentElement isEqualToString:@"LastName"])
        self.l_Name = string;
    else if([currentElement isEqualToString:@"PhoneNumber"])
        self.phone = string;
    else if([currentElement isEqualToString:@"EmailAddress"]) 
    {
        self.email = string;
    }

}

The App just crashes after hitting this line:

@try 
{ 
     NSLog(@"%@", entry.firstName);
}

When I use environment variable

NSDeallocateZombies

and then I see things working fine but after a couple of scrolls up and/or down the app crashes within #4 tableView:cellForRowAtIndexPath:] throwing

[NSObject(NSObject) doesNotRecognizeSelector:]

Please help me with this, I've been stuck here for days now, literally ! I'd be most grateful for any help !

[KunalPatel]

Nevermind found the problem. Had to use for the

NSMutableString

etc variables.

self.desc