为什么 Instruments 在 UIColor 和 NSArray 上标记内存泄漏？
我无法意识到为什么这段代码被标记为存在内存泄漏：
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
MenuViewController *menuView = [[MenuViewController alloc] initWithNibName:@"MenuView" bundle:[NSBundle mainBundle]];
navigationController = [[UINavigationController alloc] initWithRootViewController:menuView];
navigationController.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"livreto-verso-horizontal.png"]]; // memory leak here 47,1%
[menuView release];
BilheteViewController *rightView = [[BilheteViewController alloc] initWithNibName:@"BilheteView" bundle: [NSBundle mainBundle]];
spliViewController.viewControllers = [NSArray arrayWithObjects:navigationController, rightView, nil]; // memory leak here 52,9%
[window addSubview:spliViewController.view];
[window makeKeyAndVisible];
[rightView release];
return YES;
}
只是标有问题的行：
navigationController.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"livreto-verso-horizontal.png"]]
以及
spliViewController.viewControllers = [NSArray arrayWithObjects:navigationController, rightView, nil];
如何解决此泄漏？
更新1
App Delegate的dealloc方法，navigationController和spliViewController都被释放：
- (void)dealloc {
[navigationController release];
[spliViewController release];
[window release];
[super dealloc];
}
I couldn't realize why this code is being marked as having memory leaks:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
MenuViewController *menuView = [[MenuViewController alloc] initWithNibName:@"MenuView" bundle:[NSBundle mainBundle]];
navigationController = [[UINavigationController alloc] initWithRootViewController:menuView];
navigationController.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"livreto-verso-horizontal.png"]]; // memory leak here 47,1%
[menuView release];
BilheteViewController *rightView = [[BilheteViewController alloc] initWithNibName:@"BilheteView" bundle: [NSBundle mainBundle]];
spliViewController.viewControllers = [NSArray arrayWithObjects:navigationController, rightView, nil]; // memory leak here 52,9%
[window addSubview:spliViewController.view];
[window makeKeyAndVisible];
[rightView release];
return YES;
}
Just the lines marked with problems:
navigationController.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"livreto-verso-horizontal.png"]]
and
spliViewController.viewControllers = [NSArray arrayWithObjects:navigationController, rightView, nil];
How do I solve this leaks?
Update 1
App Delegate's dealloc method, both navigationController and spliViewController are being released:
- (void)dealloc {
[navigationController release];
[spliViewController release];
[window release];
[super dealloc];
}
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泄漏工具会向您显示泄漏的内容的分配位置。
所以它的意思是，在您分配这些值之后，它们从未被释放 - 这似乎意味着您的导航控制器没有在应该被释放的时候被释放。
The leaks tool shows you where something that is leaking, was allocated.
So what it's saying is, after you assigned these values they were never released - which seems like it means your navigation controller is not being released when it should be.
您看到泄漏的对象的唯一引用是否可能在其他也泄漏的对象中？
例如，您在此处分配一个导航控制器：
当您将其分配给backgroundColor时，该导航控制器将保留UIColor。
您是否在某处释放对该 navigationController 的引用？
Is it possible the only references to the objects you're seeing leaking are in other objects which are also leaking?
For example, you allocate a navigation controller here:
The UIColor will be retained by that navigationController when you assign it to backgroundColor.
Are you releasing the reference to that navigationController somewhere?