自定義UITabBarController SIGABRT崩潰在ios5 sdk

Question

我有這種情況下，我在我的應用程序中使用自定義UITabBar。
它在設備和模擬器上的ios4上都很棒。

但使用的Xcode 4.2和iOS5的SDK不會工作運行相同的代碼，當我在這一行設置我的自定義tabBarController的視圖控制器應用程序崩潰：

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

下面是我正在創建使用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是一個小的工作示例。

你的幫助是高度讚賞。

Answer 1

沒關係，我已經完全改變了我的方法，並使用this答案來構建自定義tabBar。它在ios5下工作正常。