贝宝SDK集成目标c

Question

我正在尝试将Paypal集成到我的目标C项目中。 在出现Paypal登录屏幕并输入我的登录数据并成功登录后，该视图会跳至上一个视图，该视图应显示已记录的客户端数据，应用程序崩溃了，并出现以下错误

    *** Terminating app due to uncaught exception     'NSInvalidArgumentException', reason: '*** -[__NSPlaceholderDictionary     initWithObjects:forKeys:count:]: attempt to insert nil object from objects[0]'
*** First throw call stack:
(
0   CoreFoundation                      0x0000000113defd85 __exceptionPreprocess + 165
1   libobjc.A.dylib                     0x00000001137f7deb objc_exception_throw + 48
2   CoreFoundation                      0x0000000113cec23e -[__NSPlaceholderDictionary initWithObjects:forKeys:count:] + 318
3   CoreFoundation                      0x0000000113cfe5bb +[NSDictionary dictionaryWithObjects:forKeys:count:] + 59
4   AppCreator                          0x000000010d890e1e +[PPZebraUI text:withAnnotation:] + 810
5   AppCreator                          0x000000010d875c87 -[PPFundingOption titleForDisplay] + 318
6   AppCreator                          0x000000010d8b187f -[PPPaymentFundingOptionSelectionCell refreshContent] + 653
7   AppCreator                          0x000000010d8b0bfc -[PPPaymentAttributeSelectionCell initWithViewController:withTitle:withPickerTitle:withDataSource:] + 1293
8   AppCreator                          0x000000010d88db04 -[PPSelectPayMethodViewController paymentAttributeSelectionCells] + 310
9   AppCreator                          0x000000010d8d4601 -[PPSelectPayMethodViewControllerIOS7 updateTableToConfirm:] + 977
10  AppCreator                          0x000000010d8d416e -[PPSelectPayMethodViewControllerIOS7 refreshTable:] + 100
11  AppCreator                          0x000000010d8d4229 -[PPSelectPayMethodViewControllerIOS7 viewDidAppear:] + 87
12  UIKit                               0x000000010f41d335 -[UIViewController _setViewAppearState:isAnimating:] + 830
13  UIKit                               0x000000010f41dcb8 -[UIViewController _endAppearanceTransition:] + 262
14  UIKit                               0x000000010f45886f -[UINavigationController navigationTransitionView:didEndTransition:fromView:toView:] + 1290
15  UIKit                               0x000000010f44e630 __49-[UINavigationController _startCustomTransition:]_block_invoke + 233
16  UIKit                               0x000000010fcaa4c8 -[_UIViewControllerTransitionContext completeTransition:] + 101
17  UIKit                               0x000000010f2658a3 __53-[_UINavigationParallaxTransition animateTransition:]_block_invoke95 + 834
18  UIKit                               0x000000010f32d53e -[UIViewAnimationBlockDelegate _didEndBlockAnimation:finished:context:] + 644
19  UIKit                               0x000000010f30a7ff -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 241
20  UIKit                               0x000000010f30abae -[UIViewAnimationState animationDidStop:finished:] + 80
21  QuartzCore                          0x000000010f12e3c8 _ZN2CA5Layer23run_animation_callbacksEPv + 308
22  libdispatch.dylib                   0x000000011440b3eb _dispatch_client_callout + 8
23  libdispatch.dylib                   0x00000001143f31ef _dispatch_main_queue_callback_4CF + 1738
24  CoreFoundation                      0x0000000113d490f9 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
25  CoreFoundation                      0x0000000113d0ab99 __CFRunLoopRun + 2073
26  CoreFoundation                      0x0000000113d0a0f8 CFRunLoopRunSpecific + 488
27  GraphicsServices                    0x0000000115780ad2 GSEventRunModal + 161
28  UIKit                               0x000000010f27cf09 UIApplicationMain + 171
29  AppCreator                          0x000000010d3251df main + 111
30  libdyld.dylib                       0x000000011444092d start + 1

）libc ++ abi.dylib：以类型为NSException的未捕获异常终止

我在单独的应用程序中尝试了SDk，它可以完美运行。当我将sdk添加到我的项目中时会发生此错误。 谁能帮我什么可能导致此错误

Answer 1

我发现问题出在我正在使用的另一个图书馆中。 它有一个函数可以覆盖“ UIFont”类中的“ preferredFontForTextStyle”，这对我造成了问题。 如果有人面对那种不合理的崩溃，请尝试一个接一个地删除所有其他类，以检查错误不是由与远端类中的另一行冲突引起的