Question

Hi I have this in my application : The question is, should I put self.label =nil; in viewDidUnload? If yes, why?

//.h
@interface MyClass

@property (nonatomic, retain) IBOutlet UILabel *label;

@end

//.m
@implementation Myclass

@syntesize label = label_;

- (void)dealloc
{
   self.label =nil;
}

@end

Answer 1

Yes, you should set the label property to nil both in viewDidUnload and in dealloc. viewDidUnload is called in low memory situations which enables the app to purge unneeded memory.

Not setting it to nil in viewDidUnload will not usually cause a memory leak in, but it will prevent the app from saving memory when needed.