NIB Resource Memory Leak

Question

I have a question: I have an application that uses lots of views and I tend to load them with NIBs:
MemoryManagementTestViewController *
newViewController = [[MemoryManagementTestViewController alloc] initWithNibName:@"MemoryManagementTestView" bundle:nil];
[self.navController pushViewController:newViewController animated:YES];
[newViewController release];
After I pop the above view controller off the navigation stack, its viewDidUnload() and dealloc() methods are called (below for a test view controller I created to try to isolate the cause of the problem).
The Object Allocation instrument tool shows that a number of control initWithCoder methods (such as UITextField initWithCoder) are consuming memory.
I realize that I am not using the recommended coding style for outlets (my 10 test labels and 10 test text fields), but I have tried to the recommended property style as well.
I cannot think of anything that I am not freeing, but the combination of the code above and below results in a persistent leak, at least according to the object allocator instrument application (though not with the memory leaks tool). Eventually the application runs out of memory as didReceiveMemoryWarning() is called.
I looked at your sample source code, and it appears that most of your sample applications load their views at startup instead of creating and freeing them as I am attempting to do. Is that necessary? If not, is there some trick to free NIB resources?
- (void)viewDidUnload
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
[label1 release];
[label2 release];
// ... labels 3-10 released too.
label1 = nil;
label2 = nil;
// ... labels 3-10 set to nil.
[text1 release];
[text2 release];
// text fields 3-10 released too.
text1 = nil;
text2 = nil;
// text fields 3-10 set to nil.
return;
- (void)dealloc
self.navigationItem.leftBarButtonItem = nil;
[self setView:nil];
[super dealloc];
return;
}

Answer 1

secretagentstuart wrote:
looked at your sample source code, and it appears that most of your sample applications load their views at startup instead of creating and freeing them as I am attempting to do.
Would those be 'Beginning iPhone Development' samples, by any chance?