2018-01-10 19:49:07.856 Vcontrol[83189:1968385] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSPlaceholderArray initWithObjects:count:]: attempt to insert nil object from objects[2]'
*** First throw call stack:
(
0   CoreFoundation                      0x013cfded __exceptionPreprocess + 189
1   libobjc.A.dylib                     0x008a0d6f objc_exception_throw + 49
2   CoreFoundation                      0x012e5407 -[__NSPlaceholderArray initWithObjects:count:] + 279
3   CoreFoundation                      0x012ebda7 +[NSArray arrayWithObjects:count:] + 55
4   Vcontrol                            0x000672fa -[ClientViewController platformStackView] + 229
5   Vcontrol                            0x0006718b -[ClientViewController demoBackImage] + 217
6   Vcontrol                            0x0006706f -[ClientViewController demoStackView] + 173
7   Vcontrol                            0x00066e6a -[ClientViewController verticalStackView] + 308
8   Vcontrol                            0x00066879 -[ClientViewController viewDidLoad] + 175
9   UIKit                               0x0239a878 -[UIViewController _sendViewDidLoadWithAppearanceProxyObjectTaggingEnabled] + 38
10  UIKit                               0x0239f201 -[UIViewController loadViewIfRequired] + 1434
11  UIKit                               0x023e3910 -[UINavigationController _layoutViewController:] + 52
12  UIKit                               0x023e41b3 -[UINavigationController _updateScrollViewFromViewController:toViewController:] + 427
13  UIKit                               0x023e4342 -[UINavigationController _startTransition:fromViewController:toViewController:] + 123
14  UIKit                               0x023e54c9 -[UINavigationController _startDeferredTransitionIfNeeded:] + 979
15  UIKit                               0x023e68f4 -[UINavigationController __viewWillLayoutSubviews] + 70
16  UIKit                               0x025fe235 -[UILayoutContainerView layoutSubviews] + 235
17  UIKit                               0x022a8d7f -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1418
18  libobjc.A.dylib                     0x008b61d9 -[NSObject performSelector:withObject:] + 59
19  QuartzCore                          0x01f6b0ea -[CALayer layoutSublayers] + 141
20  QuartzCore                          0x01f5e486 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 398
21  QuartzCore                          0x01f5e2e3 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 21
22  QuartzCore                          0x01eeaa92 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 334
23  QuartzCore                          0x01f17f8f _ZN2CA11Transaction6commitEv + 483
24  QuartzCore                          0x01f18b30 _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 124
25  CoreFoundation                      0x01374536 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 22
26  CoreFoundation                      0x013744a7 __CFRunLoopDoObservers + 391
27  CoreFoundation                      0x01358fef CFRunLoopRunSpecific + 399
28  CoreFoundation                      0x01358e4b CFRunLoopRunInMode + 123
29  UIKit                               0x021cf0f6 -[UIApplication _run] + 488
30  UIKit                               0x021d5bc9 UIApplicationMain + 148
31  Vcontrol                            0x000648ef main + 96
32  libdyld.dylib                       0x03a2a779 start + 1
33  ???                                 0x00000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb) 
用UIstackview必须把所有要加的控件都写出来吗？求大神解决！！！