CODEWITHSUNDEEP
iphoneobjective-ccocoa-touchmemory-managementmemory-leaks
iOSDevSF
iOSDevSF

Reputation: 1179

Releasing iVar IBOutlet vs Property IBOutlet

Can anyone verify my dealloc method is correct? Since my titleLabel and checkImageView are retained I am releasing them in dealloc. However, I am not releasing mainImageView, doneButton, and noteLabel, because they are not retained or alloced during the implementation. 

@interface CheckMarkController : UIViewController  <UIAlertViewDelegate> {
IBOutlet UIImageView *mainImageView;
IBOutlet UIButton *doneButton;
IBOutlet UILabel *noteLabel;
}

@property (nonatomic, retain) IBOutlet UILabel *titleLabel;
@property (nonatomic, retain) IBOutlet UIImageView *checkImageView;
@property (nonatomic, retain) Event *event;
@property (nonatomic, retain) Workout *workout;
@property (nonatomic, retain) NSManagedObjectContext *managedObjectContext;

@end

- (void)dealloc {
//props
[titleLabel release];
[checkImageView release];
[event release];
[workout release];
[managedObjectContext release];

[super dealloc];

Upvotes: 1

Views: 706

Answers (1)

MarkPowell
MarkPowell

Reputation: 16540

If you connect these three items via Interface Builder you DO need to release them. Outlets are retained by default. KVC (Key Value Coding) is used to set outlets. This means that loadFromNib will call setValue:withKey for each outlet you have set. This uses the @property and it's setter method, but if none are set (as is your case) it retains the object by default.

Upvotes: 4

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