我的屬性是否泄漏內存？

Question

- (void)viewDidLoad //In this scenario it only gets called once, but in other bits of code with same property initialisation it might be called more than once 
{ 
deleteButton = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:self action:@selector(deleteModelTapped:)]; //Is this leaking? 
    self.deleteButton.image = [UIImage imageNamed:[Configuration getDeleteIconName]]; 
} 

@property (nonatomic, retain) IBOutlet UIBarButtonItem *deleteButton; 

- (void)dealloc 
{  
    [deleteButton release]; 
    [super dealloc]; 
} 

Answer 1

NOP，但寫這樣也許更好

- (void)viewDidLoad 
{ 
    self.deleteButton = [[[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:self action:@selector(deleteModelTapped:)] autorelease]; 
    self.deleteButton.image = [UIImage imageNamed:[Configuration getDeleteIconName]]; 
} 

而setProperty擴大可喜歡這個

- (void)setProperty:(XXX*)p 
{ 
    if (property != p) 
    { 
     [property release]; 
     property = [p retain]; 
    } 
} 

「泄密」，也許用 「[UIImage的imageNamed：]」; :)