因此，当应用程序停止然后重新启动时，我的应用程序崩溃了，这里是堆栈跟踪：
看起来UITabBar试图访问一个null的视图，因此是exc_bad_access . 我很困惑为什么它只在重启时发生，我的tabbar也在IB中完全创建 . 任何想法都会很棒 .
异常类型：EXC_BAD_ACCESS（SIGBUS）异常代码：KERN_PROTECTION_FAILURE at 0x00000000 Crashed Thread：0
0x30183f24 objc_msgSend 24 1励志名言0x00009900 0x1000 35072
2 UIKit 0x338c37b4 - [UITabBarController transitionFromViewController：toViewController：transition：shouldSetSelected：] 212
3 UIKit 0x338c36cc - [UITabBarController transitionFromViewController：toViewController：] 32
4 UIKit 0x338c2d38 - [UITabBarController _setSelectedViewController：] 248
5 UIKit 0x339cbc44 - [UITabBarController setSelectedViewController：] 12
6 UIKit 0x339cc888 - [UITabBarController _tabBarItemClicked：] 308
7 CoreFoundation 0x35eada3c - [NSObject（NSObject）performSelector：withObject：withObject：] 20
8 UIKit 0x3384af18 - [UIApplication sendAction：to：from：forEvent：] 128
9 UIKit 0x3384ae80 - [UIApplication sendAction：toTarget：fromSender：forEvent：] 32
10 UIKit 0x33ab1ed8 - [UITabBar _sendAction：withEvent：] 416
11 CoreFoundation 0x35eada3c - [NSObject（NSObject）performSelector：withObject：withObject：] 20
12 UIKit 0x3384af18 - [UIApplication sendAction：to：from：forEvent：] 128
13 UIKit 0x3384ae80 - [UIApplication sendAction：toTarget：fromSender：forEvent：] 32
14 UIKit 0x3384ae48 - [UIControl sendAction：to：forEvent：] 44
15 UIKit 0x3384aa98 - [UIControl（内部）_sendActionsForEvents：withEvent：] 528
16 UIKit 0x3388f338 - [UIControl sendActionsForControlEvents：] 16
17 UIKit 0x33aae560 - [UITabBar（Static）_buttonUp：] 108
18 CoreFoundation 0x35eada3c - [NSObject（NSObject）performSelector：withObject：withObject：] 20
19 UIKit 0x3384af18 - [UIApplication sendAction：to：from：forEvent：] 128
20 UIKit 0x3384ae80 - [UIApplication sendAction：toTarget：fromSender：forEvent：] 32
21 UIKit 0x3384ae48 - [UIControl sendAction：to：forEvent：] 44
22 UIKit 0x3384aa98 - [UIControl（内部）_sendActionsForEvents：withEvent：] 528
23 UIKit 0x3384b5c4 - [UIControl touchesEnded：withEvent：] 452
24 UIKit 0x3383cea8 - [UIWindow _sendTouchesForEvent：] 580
25 UIKit 0x3383c4dc - [UIWindow sendEvent：] 388
26 UIKit 0x3381fc94 - [UIApplication sendEvent：] 444
27 UIKit 0x3381f3ac _UIApplicationHandleEvent 6816
28 GraphicsServices 0x35262c80 PurpleEventCallback 1040
29 CoreFoundation 0x35e9a5c4 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION 22
30 CoreFoundation 0x35e9a582 __CFRunLoopDoSource1 158
31 CoreFoundation 0x35e8c82e __CFRunLoopRun 574
32 CoreFoundation 0x35e8c504 CFRunLoopRunSpecific 220
33 CoreFoundation 0x35e8c412 CFRunLoopRunInMode 54
34 GraphicsServices 0x35261d1c GSEventRunModal 188
35 UIKit 0x33865574 - [UIApplication _run] 580
36 UIKit 0x33862550 UIApplicationMain 964
37励志名言0x00002b96 0x1000 7062
38励志名言0x00002b0c 0x1000 6924
2 回答
你得到了异常
exc_bad_access，我认为你的nib文件没有正确连接 . 用标签栏控制器连接你的标签栏 .为避免崩溃使用异常处理，以下链接可能对您有所帮助 .
throwing an exception in objective-c/cocoa
http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/ObjectiveC/Articles/ocExceptionHandling.html