在 Xcode 13 beta 5 构建之前,应用程序运行良好。
在我们的视图控制器的这个初始化代码行中突然出现这个错误:
init(dataProvider: DataProvider) {
self.dataProvider = dataProvider
super.init(style: .plain)
dataProvider.delegate = self
}
这段代码在 Xcode 12 中运行良好,并且没有任何更改,它现在中断:
'NSInternalInconsistencyException',原因:'UIViewController 缺少在初始化期间填充的初始特征集合。这是一个严重的错误,可能是由在调用 UIViewController 初始化程序之前访问视图控制器上的属性或方法引起的。视图控制器:<UITableViewController: 0x7f7fbd291bb0>'
我四处搜索,只发现了 1 个关于这个问题的晦涩话题,但这并没有太大帮助。
有时设置断点并介入可以让它在不崩溃的情况下工作,所以引擎盖下似乎存在某种布局竞争条件,但我正在努力调试。我试着睡一觉,但这不起作用。
任何和所有关于如何调试的建议都值得赞赏。现在我无法获得额外的信息来调试。如果您知道可能导致此问题的原因或在哪里查看,我将不胜感激您的意见。
这是错误堆栈跟踪:
*** First throw call stack:
(
0 CoreFoundation 0x00007fff203fc8a8 __exceptionPreprocess + 242
1 libobjc.A.dylib 0x00007fff2019ebe7 objc_exception_throw + 48
2 Foundation 0x00007fff207501c9 -[NSMutableDictionary(NSMutableDictionary) classForCoder] + 0
3 UIKitCore 0x00007fff248310ed UIViewControllerMissingInitialTraitCollection + 188
4 UIKitCore 0x00007fff24835616 -[UIViewController traitCollection] + 155
5 UIKitCore 0x00007fff24824392 -[UITableViewController dealloc] + 196
6 App Dev 0x000000010e4f5680 $s05AppLaB027MyViewController
C14paymentMethods13selectedIndex5offer8delegateACSaySo16AppPaymentMethodCG_SiAA5Offer_pAA08CheckoutcD8Delegate_pSgtcfc + 368
7 App Dev 0x000000010e4f5726 $s05AppLaB027MyViewController
C14paymentMethods13selectedIndex5offer8delegateACSaySo16AppPaymentMethodCG_SiAA5Offer_pAA08CheckoutcD8Delegate_pSgtcfcTo + 102
8 App Dev 0x000000010e289291 -[CartViewController showPaymentMethodPickerWithPaymentMethods:] + 385
9 App Dev 0x000000010e289055 __59-[CartViewController showPaymentMethodPickerOrEntryForm]_block_invoke + 245
10 App Dev 0x000000010e7075ae $sSo16AppServiceResultVSo7NSArrayCSgSo7NSErrorCSgIeyByyy_ABSaySo16AppPaymentMethodCGSgs5Error_pSgIegygg_TR + 222
11 App Dev 0x000000010e707246 $sSo17AppAccountServiceC05AppLaD0E19fetchPaymentMethods11forListType7refresh09preferredF6Method10completionSo17AppRequestReceipt_pSgAC0fmiJ0O_S2bySo16AppServiceResultV_SaySo010AppPaymentM0CGSgs5Error_pSgtcSgtFyAN_ArTtcfU_ + 630
12 App Dev 0x000000010e707333 $sSo17AppAccountServiceC05AppLaD0E19fetchPaymentMethods11forListType7refresh09preferredF6Method10completionSo17AppRequestReceipt_pSgAC0fmiJ0O_S2bySo16AppServiceResultV_SaySo010AppPaymentM0CGSgs5Error_pSgtcSgtFyAN_ArTtcfU_TA + 35
13 App Dev 0x000000010e580474 $sSo16AppServiceResultVSaySo16AppPaymentMethodCGSgs5Error_pSgIegygg_ABSo7NSArrayCSgSo7NSErrorCSgIeyByyy_TR + 212
14 App Dev 0x000000010e39bcad __79-[AppAccountV3DAO fetchPaymentMethodsRefresh:preferredPaymentMethod:withBlock:]_block_invoke + 45
15 libdispatch.dylib 0x0000000110c18a18 _dispatch_call_block_and_release + 12
16 libdispatch.dylib 0x0000000110c19bfc _dispatch_client_callout + 8
17 libdispatch.dylib 0x0000000110c28366 _dispatch_main_queue_callback_4CF + 1195
18 CoreFoundation 0x00007fff2036a555 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
19 CoreFoundation 0x00007fff20364db2 __CFRunLoopRun + 2772
20 CoreFoundation 0x00007fff20363dfb CFRunLoopRunSpecific + 567
21 GraphicsServices 0x00007fff2cbb5cd3 GSEventRunModal + 139
22 UIKitCore 0x00007fff24fee193 -[UIApplication _run] + 928
23 UIKitCore 0x00007fff24ff2bfb UIApplicationMain + 101
24 App Dev 0x000000010e267120 main + 96
25 dyld 0x0000000110654e1e start_sim + 10
26 ??? 0x0000000000000001 0x0 + 1
27 ??? 0x0000000000000001 0x0 + 1
)