How UIWindow#addSubview can make memory leak?

Question

I started to learn using Instrument, but I cannot figure it out. After I start my application, the UI shows up, I do nothing and after few seconds I can see memory leak detected:

When I have a look at the second leak I can see the following stack:

When I double click on the cell related to my code I can see that it is pointing to the following line of code:

[window addSubview:newPostUIViewController.view];

from the method:

- (void)applicationDidFinishLaunching:(UIApplication *)application {    
//creating view controller
newPostUIViewController = [[NewPostUIViewController alloc] initWithNibName:@"NewPostView" bundle:nil]; 
newPostUIViewController.title = @"Post it!";
[window addSubview:newPostUIViewController.view];

// Override point for customization after application launch
[window makeKeyAndVisible];
}

I wonder, how this can be a reason of a leak? I release newPostUIViewController in the dealloc method of PostItAppDelegate class.

Any ideas how this could be explained?

score 0 · Answer 1 · answered Jun 08 '10 at 14:06

0

You did not provide an autorelease or release to balance your init. Just in case you haven't read through it already, have a look at the memory management guide is a great help.

answered Jun 08 '10 at 14:06

slf

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Thanks for your suggestion, however, I release both newPostUIViewController and window in the dealloc method of PostItAppDelegate. Should I call the release in some other place? – Jakub Jun 08 '10 at 16:26
@Jakub can you post some more code showing how you use the controller? It's possible that the controller has an extra retain, but not on that line. – slf Jun 09 '10 at 13:10

score 0 · Accepted Answer · edited May 23 '17 at 12:24

0

Looking at link text allows to say that this is Simulator problem, not the code problem.

edited May 23 '17 at 12:24

Community

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answered Jun 08 '10 at 18:46

Jakub

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How UIWindow#addSubview can make memory leak?

2 Answers2