objective-c cant find memory leak - objective-c

Question

im mapping an xml on a custom nsobject.
when the user hits reload the function is called again.
i get several memory leaks on all strings:
UPDATE this is the current code.
- (void)mapDataOnModel
{
if(mixesArr != nil)
{
//[mixesArr release];
[mixesArr removeAllObjects];
[playListArr removeAllObjects];
}
else
{
mixesArr = [[NSMutableArray alloc]init];
playListArr = [[NSMutableArray alloc] init];
}
MixVO *tmpMix;
AudioVO *tmpAudio;
for (DDXMLElement *node in nodes)
{
tmpMix = [[MixVO alloc] init];
tmpMix.uuid = [[node attributeForName:#"uuid"] stringValue];
tmpMix.name = [[[node elementsForName:#"name"] objectAtIndex:0] stringValue];
tmpMix.artist = [[[node elementsForName:#"artist"] objectAtIndex:0] stringValue];
tmpMix.path = [[[node elementsForName:#"file"] objectAtIndex:0] stringValue];
tmpMix.headline = [[[node elementsForName:#"headline"] objectAtIndex:0] stringValue];
tmpMix.teaser = [[[node elementsForName:#"teaser"] objectAtIndex:0] stringValue];
tmpMix.copy = [[[node elementsForName:#"copy"] objectAtIndex:0] stringValue];
tmpMix.isHighlight = NO;
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"HH:mm:ss"];
tmpMix.duration = [dateFormat dateFromString:[[[node elementsForName:#"duration"] objectAtIndex:0] stringValue]] ;
[dateFormat release];
// CHECK IF IT IS A HIGHLIGHT MIX
for (int i = 0; i < [[highlightsNode elementsForName:#"member"] count]; i++)
{
NSString *highlightID;
highlightID = [[[highlightsNode elementsForName:#"member"] objectAtIndex:i] stringValue] ;
if([tmpMix.uuid isEqualToString:highlightID])
{
tmpMix.isHighlight = YES;
}
}
if([[node elementsForName:#"image_standard"] count] > 0)
tmpMix.image_standard = [[[node elementsForName:#"image_standard"] objectAtIndex:0] stringValue] ;
if([[node elementsForName:#"image_artist"] count] > 0)
tmpMix.image_artist = [[[node elementsForName:#"image_artist"] objectAtIndex:0] stringValue] ;
if([[node elementsForName:#"image_teaser"] count] > 0)
tmpMix.image_teaser = [[[node elementsForName:#"image_teaser"] objectAtIndex:0] stringValue] ;
if([[node elementsForName:#"image_player"] count] > 0)
tmpMix.image_player = [[[node elementsForName:#"image_player"] objectAtIndex:0] stringValue] ;
/*
tmpAudio = [[AudioVO alloc] init];
tmpAudio.file = tmpMix.path;
NSString *tmpDuration;
tmpDuration = [[[node elementsForName:#"duration"] objectAtIndex:0] stringValue];
tmpAudio.duration = tmpDuration;
// PARSE TRACKS
NSArray *track = NULL;
track = [node elementsForName:#"tracks"];
DDXMLElement *trackElems = [track objectAtIndex:0];
NSArray *tracks = NULL;
tracks = [trackElems elementsForName:#"track"];
NSMutableArray *tracksArray;
tracksArray = [[NSMutableArray alloc]init];
TrackVO *tmpTrack;
for (DDXMLElement *node2 in tracks)
{
tmpTrack = [[TrackVO alloc] init];
tmpTrack.timecode = [[node2 attributeForName:#"timecode"] stringValue];
tmpTrack.name = [node2 stringValue];
[tracksArray addObject:tmpTrack];
[tmpTrack release];
}
tmpAudio.tracksArr = tracksArray;
[tracksArray release];
tmpMix.audioVO = tmpAudio;
[tmpAudio release];
*/
[mixesArr addObject:tmpMix];
[tmpMix release];
}
// SORT PROGRAMM
/*
NSSortDescriptor *lastDescriptor =
[[[NSSortDescriptor alloc]
initWithKey:#"artist"
ascending:YES
selector:#selector(localizedCaseInsensitiveCompare:)] autorelease];
NSArray * descriptors =
[NSArray arrayWithObjects:lastDescriptor, nil];
NSArray * sortedArray = [mixesArr sortedArrayUsingDescriptors:descriptors];
//[mixesArr release];
mixesArr = [[NSMutableArray alloc]initWithArray:sortedArray];
// PARSE PLAYLIST
for (DDXMLElement *node in nodesPl)
{
SchedVO *tmpSched;
tmpSched = [[SchedVO alloc] init];
NSString *timeStr;
timeStr = [[node attributeForName:#"timestamp"] stringValue];
tmpSched.date = [NSDate dateWithTimeIntervalSince1970:timeStr.intValue];
tmpSched.uid = [node stringValue];
[playListArr addObject:tmpSched];
//[tmpSched release];
}
*/
[self updateDone];
}
MixVO:
#interface MixVO : NSObject
{
NSString *uuid;
NSString *name;
NSString *artist;
NSString *path;
NSString *headline;
NSString *teaser;
NSString *copy;
NSString *image_standard;
NSString *image_artist;
NSString *image_teaser;
NSString *image_player;
NSDate *duration;
AudioVO *audioVO;
BOOL isHighlight;
}
#property (nonatomic,retain) NSString *uuid;
#property (nonatomic,retain) NSString *name;
#property (nonatomic,retain) NSString *artist;
#property (nonatomic,retain) NSString *path;
#property (nonatomic,retain) NSString *headline;
#property (nonatomic,retain) NSString *teaser;
#property (nonatomic,retain) NSString *copy;
#property (nonatomic,retain) NSString *image_standard;
#property (nonatomic,retain) NSString *image_artist;
#property (nonatomic,retain) NSString *image_teaser;
#property (nonatomic,retain) NSString *image_player;
#property (nonatomic,retain) NSDate *duration;
#property (nonatomic,retain) AudioVO *audioVO;
#property BOOL isHighlight;
#end
maybe someone can help me with this.
thanks in advance
alex

Answer 1

if(mixesArr != nil)
{
[mixesArr removeAllObjects];
[playListArr removeAllObjects];
}
mixesArr = [[NSMutableArray alloc]init];
This suggest mixesArr could already be allocated, and you simply allocate a new instance, making the original mixesArr a dangling pointer.
Shouldn't you write something like:
if(mixesArr != nil)
{
[mixesArr removeAllObjects];
[playListArr removeAllObjects];
}
else {
mixesArr = [[NSMutableArray alloc]init];
}
Or something similar?

Answer 2

Where are you releasing mixesArr?
You'll also want to release all the strings you're retaining.