objective-c - EXC_BAD_ACCESS问题与发布声明

Question

我不知道该语句有什么问题，因为我的代码与我从另一个项目复制的代码完全相同，但是当一切看起来不错时，它只会不断抛出EXC_BAD_ACCESS。谁能找出问题所在？非常感谢，因为我几个小时都在处理此错误，相同的代码不断产生不同的结果，例如访问错误或出现白屏。

代码片段:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{

NSLog(@"0");
UINavigationController * localNavigationController;

tabBarController = [[UITabBarController alloc] init];
NSMutableArray * localControllersArray = [[NSMutableArray alloc] initWithCapacity:4];

//ProductViewController
ProductViewController * productViewController;
productViewController = [[ProductViewController alloc] initWithTabBar];

localNavigationController = [[UINavigationController alloc] initWithRootViewController: productViewController];
[localControllersArray addObject:localNavigationController];
NSLog(@"1");
// memory statements
[localNavigationController release];
[productViewController release];


//Search View Controller
SearchViewController * searchViewController;
searchViewController = [[SearchViewController alloc] initWithTabBar];
localNavigationController = [[UINavigationController alloc] initWithRootViewController: searchViewController];
[localControllersArray addObject:localNavigationController];

// memory statements
[localControllersArray release];
[searchViewController release];
NSLog(@"2");
//Register View Controller
RegisterViewController * registerViewController;
registerViewController = [[RegisterViewController alloc] initWithTabBar];
localNavigationController  = [[UINavigationController alloc] initWithRootViewController:registerViewController];

[localControllersArray addObject:localNavigationController];
NSLog(@"3");
//memory management
[localControllersArray release];
[registerViewController release];

//About View Controller
AboutViewController * aboutViewController;
aboutViewController = [[AboutViewController alloc] initWithTabBar];
localNavigationController = [[UINavigationController alloc] initWithRootViewController: aboutViewController];
[localControllersArray addObject:localNavigationController];

//memory management
[localNavigationController release];
[aboutViewController release];
NSLog(@"4");
// Override point for customization after application launch.
tabBarController.viewControllers = localControllersArray;


[window addSubview:tabBarController.view];
// Override point for customization after application launch.
[self.window makeKeyAndVisible];
return YES;

NSLog可以查看问题出在哪里。在[localNavigationController版本]之后，3不会出现。

我已经附上了项目。

http://www.mediafire.com/?eauye5s361cyej0

提前致谢。

Answer 1

使用静态分析器

确实，使用产品菜单中的“分析”，它将在一秒钟之内找出问题所在。

在

[localControllersArray addObject:localNavigationController];

您使用之前释放了几行的数组。

编辑:是的，发布代码而不是上传项目是一种方法。猜猜我碰巧度过了美好的一天并下载了。