Retain Cycle on Retain Cycles - ios

Question

I'm seeing a gradual build up of memory that I think might be a retain cycle.
When does this happen: Click on a custom cell that expands and injects a nib with 3 buttons into the expanded area. Clicking the cell again closes the cell, shrinks the cell's tablerow height, rotates an open indicator and removes the previously injected nib.
If I open and close the cell multiple times I see the memory gradually building up.
Any ideas what might be causing this would be greatly appreciated.
Sorry I don't have enough reputation to post photos.
Build up:
Example of retained objects(mostly Animation related):
EDIT: Using ARC and on iOS 6
MasterViewController - TableView Functions
#pragma mark - UITABLEVIEW
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [self.topicsArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *CellIdentifier2 = #"SRCollapsibleCellClosed";
SRCollapsibleCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier2];
if (cell == nil) {
cell = [[SRCollapsibleCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier2];
}
SRTopic *topic = [self.topicsArray objectAtIndex:indexPath.row];
[cell updateWithTopic:topic];
if([self isCellOpen:indexPath]){
CGAffineTransform transformation = CGAffineTransformMakeRotation(M_PI/2);
cell.arrow.transform = transformation;
if(![self hasChoiceBox:cell]){
[self insertChoiceBox:cell atIndex:indexPath];
}
} else{
CGAffineTransform transformation = CGAffineTransformMakeRotation(0);
cell.arrow.transform = transformation;
}
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if([self isCellOpen:indexPath]){
[self closeCellAtIndexPath:indexPath];
}
else{
NSIndexPath * openCell= self.openCellIndex;
NSIndexPath * newOpenCell= indexPath;
[self closeCellAtIndexPath:openCell];
[self openCellAtIndexPath:newOpenCell];
}
[tableView beginUpdates];
[tableView endUpdates];
[tableView deselectRowAtIndexPath:indexPath animated:NO];
}
-(CGFloat)tableView: (UITableView*)tableView heightForRowAtIndexPath: (NSIndexPath*) indexPath {
if([indexPath isEqual:self.openCellIndex]){
return 217.0;
} else {
return 63.0;
}
}
-(void)rotateCellArrowAtIndexPath:(NSIndexPath*)indexPath willOpen:(bool)willOpen Animated:(bool)animated{
// Change Arrow orientation
SRCollapsibleCell *cell = (SRCollapsibleCell*) [self.topicsTableView cellForRowAtIndexPath:indexPath];
CGAffineTransform transformation;
if(willOpen){
transformation = CGAffineTransformMakeRotation(M_PI/2);
} else {
transformation = CGAffineTransformMakeRotation(0);
}
if(animated){
[UIView animateWithDuration:.2 delay:0 options:nil animations:^{
cell.arrow.transform = transformation;
} completion:nil];
}
else{
cell.arrow.transform = transformation;
}
}
-(BOOL)isCellOpen:(NSIndexPath *)indexPath{
return [indexPath isEqual:self.openCellIndex];
}
-(void)closeCellAtIndexPath:(NSIndexPath*)indexPath{
//NSLog(#"Cell closing");
[self rotateCellArrowAtIndexPath:indexPath willOpen:NO Animated:YES];
[self removeSRChoiceBoxFromCellAtIndexPath:indexPath];
self.openCellIndex = nil;
}
-(void)openCellAtIndexPath:(NSIndexPath*)indexPath{
[self rotateCellArrowAtIndexPath:indexPath willOpen:YES Animated:YES];
SRCollapsibleCell *cell = (SRCollapsibleCell*)[self.topicsTableView cellForRowAtIndexPath:indexPath];
[self insertChoiceBox:cell atIndex:indexPath];
self.openCellIndex = indexPath;
}
-(void)removeSRChoiceBoxFromCellAtIndexPath:(NSIndexPath *)indexPath{
SRCollapsibleCell *cell = (SRCollapsibleCell*) [self.topicsTableView cellForRowAtIndexPath:indexPath];
for(id subview in cell.SRCollapsibleCellContent.subviews){
if([subview isKindOfClass:[SRChoiceBox class]]){
SRChoiceBox *tempBox = subview;
[tempBox removeFromSuperview];
tempBox.delegate = nil;
tempBox = nil;
}
}
}
-(void)insertChoiceBox: (SRCollapsibleCell *)cell atIndex:(NSIndexPath *) indexPath
{
//SRChoiceBox *newBox = [[SRChoiceBox alloc] initWithFrame:CGRectMake(0, 0, 310, 141)];
SRChoiceBox *newBox = [[SRChoiceBox alloc] init];
SRTopic *topic = [self.topicsArray objectAtIndex:indexPath.row];
[newBox updateWithSRTopic:topic];
newBox.delegate = self;
[cell.SRCollapsibleCellContent addSubview:newBox];
cell = nil;
topic = nil;
newBox = nil;
}
-(bool)hasChoiceBox:(SRCollapsibleCell *)cell{
for(UIView *subview in cell.SRCollapsibleCellContent.subviews){
if([subview isKindOfClass:[SRChoiceBox class]]){
return true;
}
}
return false;
}
SRChoiceBox - UIView object that gets inserted into cell
//.h
#protocol SRChoiceBoxDelegate <NSObject>
-(void)positionWasChoosen: (NSString *)choice topicId: (NSNumber *)topicId;
#end
#interface SRChoiceBox : UIView
-(id) initWithLabel: (NSDictionary *)labels andTopicID: (NSNumber *)topicId andFrame:(CGRect)frame;
#property (nonatomic, weak) IBOutlet UIView *SRChoiceBox;
#property (nonatomic, strong) NSNumber *SRTopicId;
#property (nonatomic, weak) id<SRChoiceBoxDelegate> delegate;
#property (weak, nonatomic) IBOutlet UILabel *agreeCount;
#property (weak, nonatomic) IBOutlet UILabel *disagreeCount;
#property (weak, nonatomic) IBOutlet UILabel *observeCount;
-(IBAction)buttonPress:(id)sender;
-(void)updateWithSRTopic:(SRTopic *)topic;
....
//.m
-(id)init{
self = [super init];
if (self) {
UINib *nib = [UINib nibWithNibName:#"SRChoiceBox" bundle:nil];
NSArray *q = [nib instantiateWithOwner:self options:nil];
[self addSubview:q[0]];
}
return self;
}
-(void)updateWithSRTopic:(SRTopic *)topic
{
self.SRTopicId = topic.topicId;
self.agreeCount.text = [NSString stringWithFormat: #"%#",topic.agreeDebaters];
self.disagreeCount.text = [NSString stringWithFormat: #"%#",topic.disagreeDebaters];
self.observeCount.text = [NSString stringWithFormat: #"%#",topic.observers];
}
- (IBAction)buttonPress:(id) sender {
int tag = [sender tag];
switch (tag) {
case 0:
[self.delegate positionWasChoosen:#"agree" topicId:self.SRTopicId];
break;
case 1:
[self.delegate positionWasChoosen: #"disagree" topicId:self.SRTopicId];
break;
case 2:
[self.delegate positionWasChoosen: #"observe" topicId:self.SRTopicId];
break;
default:
break;
}
}
- (void)dealloc
{
self.SRChoiceBox =nil;
self.SRTopicId=nil;
self.delegate=nil;
self.agreeCount=nil;
self.disagreeCount=nil;
self.observeCount=nil;
//NSLog(#"choicebox deallocated: %#", self);
}
SRCollapsibleCell -- Reusable cell
//.h
#interface SRCollapsibleCell : UITableViewCell
#property (strong) NSNumber *topicId;
#property (strong) NSDictionary *topicStats;
#property (weak, nonatomic) IBOutlet UILabel *title;
#property (weak, nonatomic) IBOutlet UILabel *subtitle;
#property (weak, nonatomic) IBOutlet UILabel *agreeDebaters;
#property (weak, nonatomic) IBOutlet UILabel *disagreeDebaters;
#property (weak, nonatomic) IBOutlet UILabel *observers;
#property (weak, nonatomic) IBOutlet UIImageView *arrow;
#property (weak, nonatomic) IBOutlet UIView *SRCollapsibleCellContent;
//-(void)updateWithTopic:(NSDictionary *) stats;
-(void)formatTitle:(NSString *)title;
-(void)updateWithTopic: (SRTopic *)topic;
#end
//.m
#implementation SRCollapsibleCell
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
}
return self;
}
-(void)formatTitle:(NSString *)title{
if(title.length<30){
self.title.text= title;
self.subtitle.text =#"";
} else {
NSArray *splitString = [self splitString:title maxCharacters:30];
self.title.text = splitString[0];
self.subtitle.text = splitString[1];
splitString = nil;
title = nil;
}
}
////http://www.musicalgeometry.com/?p=1197
- (NSArray *)splitString:(NSString*)str maxCharacters:(NSInteger)maxLength {
NSMutableArray *tempArray = [NSMutableArray arrayWithCapacity:1];
NSArray *wordArray = [str componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSInteger numberOfWords = [wordArray count];
NSInteger index = 0;
NSInteger lengthOfNextWord = 0;
while (index < numberOfWords && tempArray.count<2) {
NSMutableString *line = [NSMutableString stringWithCapacity:1];
while ((([line length] + lengthOfNextWord + 1) <= maxLength) && (index < numberOfWords)) {
lengthOfNextWord = [[wordArray objectAtIndex:index] length];
[line appendString:[wordArray objectAtIndex:index]];
index++;
if (index < numberOfWords) {
[line appendString:#" "];
}
}
[tempArray addObject:line];
NSMutableString *subtitle = [NSMutableString stringWithCapacity:1];
while(index<numberOfWords){
[subtitle appendString:[wordArray objectAtIndex:index]];
[subtitle appendString:#" "];
index++;
}
[tempArray addObject:subtitle];
break;
}
return tempArray;
}
//Breaks MVC but it makes the MasterVC cleaner
-(void)updateWithTopic: (SRTopic *)topic
{
[self formatTitle:topic.title];
self.topicId = topic.topicId;
self.agreeDebaters.text = [NSString stringWithFormat:#"%#",topic.agreeDebaters];
self.disagreeDebaters.text = [NSString stringWithFormat:#"%#", topic.disagreeDebaters];
self.observers.text = [NSString stringWithFormat:#"%#", topic.observers];
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
[super setSelected:selected animated:animated];
}
#end