Exception could not understand in iphone - ios

Question

Hey can anyone help me out that what type of exception is this i had earlier a code and link is as: Application run on simulator but not on device in iphone
can anybody here who can tell that what type of exception is in it? is there any memory leak?
here is the log below:
2013-12-27 17:53:26.814 Skirr[1346:a0b] Application windows are expected to have a root view controller at the end of application launch
2013-12-27 17:53:27.995 Skirr[1346:a0b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSPlaceholderArray initWithObjects:count:]: attempt to insert nil object from objects[0]'
*** First throw call stack:
(
0 CoreFoundation 0x032745e4 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x021b88b6 objc_exception_throw + 44
2 CoreFoundation 0x03228316 -[__NSPlaceholderArray initWithObjects:count:] + 390
3 CoreFoundation 0x0324bce9 +[NSArray arrayWithObject:] + 73
4 Skirr 0x000093bd -[SlideViewController viewDidLoad] + 1597
5 UIKit 0x00e2d318 -[UIViewController loadViewIfRequired] + 696
6 UIKit 0x00e2d5b4 -[UIViewController view] + 35
7 UIKit 0x00e473e2 -[UINavigationController _startCustomTransition:] + 778
8 UIKit 0x00e540c7 -[UINavigationController _startDeferredTransitionIfNeeded:] + 688
9 UIKit 0x00e54cb9 -[UINavigationController __viewWillLayoutSubviews] + 57
10 UIKit 0x00f8e181 -[UILayoutContainerView layoutSubviews] + 213
11 UIKit 0x00d84267 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 355
12 libobjc.A.dylib 0x021ca81f -[NSObject performSelector:withObject:] + 70
13 QuartzCore 0x005622ea -[CALayer layoutSublayers] + 148
14 QuartzCore 0x005560d4 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
15 QuartzCore 0x00555f40 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 26
16 QuartzCore 0x004bdae6 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 294
17 QuartzCore 0x004bee71 _ZN2CA11Transaction6commitEv + 393
18 QuartzCore 0x004bf544 _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 92
19 CoreFoundation 0x0323c4ce __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 30
20 CoreFoundation 0x0323c41f __CFRunLoopDoObservers + 399
21 CoreFoundation 0x0321a344 __CFRunLoopRun + 1076
22 CoreFoundation 0x03219ac3 CFRunLoopRunSpecific + 467
23 CoreFoundation 0x032198db CFRunLoopRunInMode + 123
24 GraphicsServices 0x034ce9e2 GSEventRunModal + 192
25 GraphicsServices 0x034ce809 GSEventRun + 104
26 UIKit 0x00d19d3b UIApplicationMain + 1225
27 Skirr 0x000055a2 main + 130
28 libdyld.dylib 0x06896725 start + 0
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)

Answer 1

have look at this link from
attempt to insert nil object from objects[0]
you are inserting or handling nil object you can get that line refer given above link

Answer 2

The error
* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[__NSPlaceholderArray initWithObjects:count:]: attempt to insert nil object from objects[0]'
is occurring because you are trying to add nil value to an NSArray. After looking through your code on the other question the specific line of code that it is crashing on is
[_slideNavigationController setViewControllers:[NSArray arrayWithObject:initalViewController] animated:NO];
It is crashing here because of one of two things
1) initalViewController is nil so when you add it using arrayWithObject it crashes.
or
2) setViewControllers:[NSArray arrayWithObject:initalViewController] is causing the error because [NSArray arrayWithObject:initalViewController] is setting nil to the method setViewControllers: method which takes an NSArray.
I would say it is option (1) that is causing your issue though as the crash happens when arrayWithObject is called.

Answer 3

Check your main.m. The last argument should be set to the name of the class that implements the UIApplicationDelegate protocol OR you can try for last argument like NSStringFromClass([AppDelegate class]).
Please check this link it might help you .
click here