Problem with object being de-alloced

[sal_park]

Hi All,

bit of a new iphone / objective-c coder, but long time hacker . I'm have a strange problem with an object that is getting destroyed and I can't work out why

I create a new object:

myUploadRootViewController = [[uploadRootViewController alloc  ] initWithNibName:@"uploadRootViewController" bundle:nil];

and then when I come to use it I get an 'EXC_BAD_ACCESS' which appears to be because as soon as the view controller is created it's dealloc method is called. (proved with an NSLog statment)

Now given I've called alloc and don't call release it anywhere or add it to an autorelease pool, how/why is it getting released ?

As far as I understand if I alloc an object I'm responsibe for a release and/or memory leak

Any pointers welcome...


sal

[JonnyThunder]

Yes, if you alloc an object you are responsible for releasing it. Are you sure it's this which is being deallocated, and not something within this class?

[sal_park]

Originally Posted by JonnyThunder

Yes, if you alloc an object you are responsible for releasing it. Are you sure it's this which is being deallocated, and not something within this class?

Hi Jonny,

spot on advice - the object being created here:

self.myUploadRootViewController = 
   [[uploadRootViewController alloc  ] 
       initWithNibName:@"uploadRootViewController" bundle:nil];
   NSLog(@"hash is [%i]",[myUploadRootViewController hash]);

Is not that same object instance that is being destroyed here:

- (void)dealloc {
	NSLog(@"****** uploadRootViewController being dealloced");
	NSLog(@"hash is [%i]",[self hash]);
    [super dealloc];
}

So given I've only created 1 object, where is the other instance coming from ? is it being created from the info in the nib ?

thanks

sal

[eddietr]

I'm guessing you have an instance of uploadRootViewController inside that nib and you're using that to make some connections. That's probably not what you want. Most likely, you want to make your connections to "File's Owner" instead.

[sal_park]

Hi Eddietr,

Originally Posted by eddietr

I'm guessing you have an instance of uploadRootViewController inside that nib and you're using that to make some connections. That's probably not what you want. Most likely, you want to make your connections to "File's Owner" instead.

Thanks - your guess is 100% correct - I'd attached the connections from the button throwing the error to the uploadRootViewController instance in the nib, not the file owners. I'm now very happy it is working !

thanks for the help guys, very much appreciated.


sal