自定义UITabBarController SIGABRT崩溃在ios5 sdk

Question

我有这种情况下，我在我的应用程序中使用自定义UITabBar。
它在设备和模拟器上的ios4上都很棒。

但使用的Xcode 4.2和iOS5的SDK不会工作运行相同的代码，当我在这一行设置我的自定义tabBarController的视图控制器应用程序崩溃：

tabBarController.viewControllers = [NSArray arrayWithObjects:nc1, nc2, nc3, nil]; 

下面是我正在创建使用TabBar：

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

    tabBarController = [[MBCustomTabBarController alloc] init]; 

    home=[[Home alloc] initWithNibName:@"Home" bundle:nil]; 
    UINavigationController *nc1=[[UINavigationController alloc] initWithRootViewController:home]; 

    live=[[Live alloc] initWithNibName:@"Live" bundle:nil]; 
    UINavigationController *nc2=[[UINavigationController alloc] initWithRootViewController:live]; 

    report=[[Report alloc] initWithNibName:@"Report" bundle:nil]; 
    UINavigationController *nc3=[[UINavigationController alloc] initWithRootViewController:report]; 


    //custom tabbar items 
    MBCustomTabBarItem *firstItem = [[MBCustomTabBarItem alloc] initWithTitle:@"headlines" image:[UIImage imageNamed:@"HOME-.png"] tag:0]; 
    MBCustomTabBarItem *secondItem = [[MBCustomTabBarItem alloc] initWithTitle:@"live" image:[UIImage imageNamed:@"NEWS-.png"] tag:1]; 
    MBCustomTabBarItem *thirdItem = [[MBCustomTabBarItem alloc] initWithTitle:@"report" image:[UIImage imageNamed:@"REPORT-.png"] tag:2]; 


    [firstItem setImage:[UIImage imageNamed:@"HOME.png"] forState:UIControlStateSelected]; 
    [secondItem setImage:[UIImage imageNamed:@"NEWS.png"] forState:UIControlStateSelected]; 
    [thirdItem setImage:[UIImage imageNamed:@"REPORT.png"] forState:UIControlStateSelected]; 

    nc1.tabBarItem=firstItem; 
    nc2.tabBarItem=secondItem; 
    nc3.tabBarItem=thirdItem; 

    [firstItem release]; 
    [secondItem release]; 
    [thirdItem release]; 


    tabBarController.viewControllers = [NSArray arrayWithObjects:nc1, nc2, nc3, nil]; 
    [nc1 release]; 
    [nc2 release]; 
    [nc3 release]; 
    tabBarController.customTabBar.frame = CGRectMake(0, 480 - 49, 320, 49); 
    tabBarController.customTabBar.backgroundColor = [UIColor clearColor]; 
    tabBarController.customTabBar.itemWidth = 320/[self.tabBarController.viewControllers count]; 


    [self.window addSubview:tabBarController.view]; 
    [self.window makeKeyAndVisible]; 

    return YES; 
} 

而且here是一个小的工作示例。

你的帮助是高度赞赏。

Answer 1

没关系，我已经完全改变了我的方法，并使用this答案来构建自定义tabBar。它在ios5下工作正常。