Question

So say in my viewcontroller’s .h file I have:

@interface MyViewController : UIViewController {

IBOutlet UILabel *myLabel;
IBOutlet UIView *myView;
IBOutlet UIImageView *myImageView;
IBOutlet UIButton *myButton;

NSNumber *myNumber; 
NSString *myString;
NSMutableArray *myArray;

UILabel *myCurrentLabel;
SomeObject *myObject;

CGPoint myPoint;    
}

… now in the viewcontroller’s .c file

- (void)dealloc {

[myLabel release];
[myView release];
[myImageView release];
[myButton release];

[myNumber release]; // is this necessary?
[myString release]; // is this necessary?
[myArray release];

[myCurrentLabel release];
[myObject release];

// I don't need to release myPoint because it's a struct

[super dealloc];
}

Please see my comments in the .c file, I’m just wondering if my release statements are correct (and if not, why)…

Thank you!!

Answer 1

Without seeing your init code, it is impossible to tell. As a general rule, you need to release anything that you init that is not autoreleased. For example:

//AUTORELEASED
NSArray *array1 = [NSArray arrayWithObject:@"foo"];                       

// NOT AUTORELEASED
NSArray *array2 = [[NSArray alloc] initWithObject:@"foo"];                

// AUTORELEASED
NSArray *array3 = [[[NSArray alloc] initWithObject:@"foo"] autorelease];

In the above 3, you would only have to release array2 if you do not replace them with any other code later on.