我已经遵循了 Ray Wendelich 教程RayWenderlich 教程 Tabbarcontroller 使用故事板 http://www.raywenderlich.com/50308/storyboards-tutorial-in-ios-7-part-1
只需查看故事板图像即可。
Ray 正在使用以下代码访问“玩家视图控制器”
UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
UINavigationController *navigationController = [tabBarController viewControllers][0];
PlayersViewController *playersViewController = [navigationController viewControllers][0];
当我尝试使用以下代码访问playerDetailsViewController 时,我遇到了崩溃。传达讯息
收视率[2630:60b]* 由于未捕获的异常“NSRangeException”而终止应用程序,原因:“*-[__NSArrayI objectAtIndex:]: 索引 1 超出范围 [0 .. 0]'
*** 首先抛出调用堆栈:
(0x30b49e83 0x3aea66c7 0x30a7fff9 0x3ddd1 0x3333eaad 0x3333e4f3 0x33338b41 0x332d3a07 0x332d2cfd 0x33338321 0x357b876d 0x357b835 7 0x30b14777 0x30b14713 0x30b12edf 0x30a7d471 0x30a7d253 0x333375c3 0x33332845 0x3e0fd 0x3b39fab7)
libc++abi.dylib:以 NSException 类型的未捕获异常终止
代码
UITabBarController *tabBarController =
(UITabBarController *)self.window.rootViewController;
UINavigationController *navigationController =
[[tabBarController viewControllers] objectAtIndex:0];
PlayersViewController *playersViewController =
[[navigationController viewControllers] objectAtIndex:0];
UINavigationController *nav=[[navigationController viewControllers]objectAtIndex:1];
PlayerDetailsViewController *playerdetailsviewcontroller=[[nav viewControllers]objectAtIndex:0];
我也尝试了下面的代码,
UITabBarController *tabBarController =
(UITabBarController *)self.window.rootViewController;
UINavigationController *navigationController =
[[tabBarController viewControllers] objectAtIndex:0];
PlayersViewController *playersViewController =
[[navigationController viewControllers] objectAtIndex:0];
PlayerDetailsViewController *playerdetailsviewcontroller=[[navigationController viewControllers]objectAtIndex:1];
我在哪里收到消息崩溃
'NSRangeException',原因:'*** -[__NSArrayI objectAtIndex:]:索引 1 超出范围 [0 .. 0]'
The storyboard image
基本上我想从appdelegate访问PlayerdetailsViewcontroller。
我想我错过了一些东西,有什么想法吗?