在将AppDelegate转换为Swift后，App崩溃，从Objective到[__SwiftValue set]：发送到实例的未识别的选择器
在将AppDelegate转换为Swift后，App崩溃，从Objective到[__SwiftValue set]：发送到实例的未识别的选择器
提问于 2020-02-04 23:24:51
我已经转换了一个应用程序从Objective到SWIFT5.1。最后一步是转换AppDelegate。在我转换AppDelegate之前，这个应用程序一直运行得很好。转换后，每个segue崩溃时：
"__SwiftValue set:发送到实例的不可识别的选择器“
我有七个标签。每个选项卡都能很好地工作，直到我切换到另一个视图控制器或如果我选择.更多。我完全不知所措。我已经设置了我能想到的每一个断点。例如，当我准备在其中一个控制器中使用segue时，所有变量似乎都被正确设置，但是一旦函数退出，应用程序在加载下一个视图控制器之前就会崩溃。断点总是AppDelegate中的类AppDelegate语句。
发生什么事了呢？当我切换到使用Objective版本的AppDelegate时，一切都很好。我想，有些东西被释放了，或者被取消了，我无法检测到。下面是UITabbarController在AppDelegate中的代码：
let tc: UITabBarController? = window?.rootViewController as? UITabBarController
var items: [UIViewController]? = tc?.viewControllers
//set tab titles...
var i: Int = 0
for nav in items ?? [] {
guard let nav = nav as? UINavigationController else {
continue
}
let vc: UIViewController? = nav.viewControllers.first
i += 1
switch i {
case 1:
vc?.title = NSLocalizedString(Globals.kBD_Everyday, comment: "Title for first tab")
case 2:
vc?.title = NSLocalizedString(Globals.kBD_People, comment: "Title for second tab")
case 3:
vc?.title = NSLocalizedString(Globals.kBD_Places, comment: "Title for third tab")
case 4:
vc?.title = NSLocalizedString(Globals.kBD_Tracks, comment: "Title for fourth tab")
case 5:
vc?.title = NSLocalizedString(Globals.kBD_Songs, comment: "Title for fifth tab")
case 6:
vc?.title = NSLocalizedString(Globals.kBD_Instruments, comment: "Title for sixth tab")
case 7:
vc?.title = NSLocalizedString(Globals.kBD_Sources, comment: "Title for last tab")
default:
break
}
}
if Globals.my_IS_TEST != 0 {
//log application document directory
print("Version \(appVersionString ?? ""), Build: \(appBuildString ?? "")")
print("\(AppDelegate.applicationDocumentsDirectory()!)")
print("plist at \(plist)")
} else {
//remove data load
items?.removeLast()
tc?.viewControllers = items
}
//firstObject is a nav controller
let tabView = tc?.viewControllers?.first as! UINavigationController
cvc = tabView.viewControllers.first as? ContainerViewController
cvc?.isThisDay = true这是调试器的输出: 2020-02-04 18:23:22.118721-0500 Fab4Everyday78607:10435517 -__SwiftValue set:未识别的选择器发送到实例0x604000110c10 2020-02-04 18:23:22.125943-0500 Fab4Everyday78607:10435517 *终止应用程序，原因是：'NSInvalidArgumentException'，原因：‘_SwiftValue集:未识别的选择器发送到实例0x604000110c10’*第一次抛出调用堆栈：(
0 CoreFoundation 0x000000010680627e __exceptionPreprocess + 350
1 libobjc.A.dylib 0x0000000106673b20 objc_exception_throw + 48
2 CoreFoundation 0x0000000106826fd4 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
3 CoreFoundation 0x000000010680ac4c ___forwarding___ + 1436
4 CoreFoundation 0x000000010680cf78 _CF_forwarding_prep_0 + 120
5 UIFoundation 0x000000011b0cdf37 -[NSCoreTypesetter _NSFastDrawString:length:attributes:paragraphStyle:typesetterBehavior:lineBreakMode:rect:padding:graphicsContext:baselineRendering:usesFontLeading:usesScreenFont:scrollable:syncAlignment:mirrored:boundingRectPointer:baselineOffsetPointer:wantsTextLineFragments:drawingContext:] + 2621
6 UIFoundation 0x000000011b0cf388 -[NSCoreTypesetter _stringDrawingCoreTextEngineWithOriginalString:rect:padding:graphicsContext:forceClipping:attributes:stringDrawingOptions:drawingContext:wantsTextLineFragments:validatedAttributedString:firstNonRenderedCharacterIndex:foundSoftHyphenAtEOL:enginePathUsed:] + 1142
7 UIFoundation 0x000000011b0c9a67 __NSStringDrawingEngine + 5999
8 UIFoundation 0x000000011b0c64bf _NSStringDrawingCore + 173
9 UIFoundation 0x000000011b0cac82 -[NSAttributedString(NSExtendedStringDrawing) drawWithRect:options:context:] + 456
10 UIKitCore 0x00000001197b3ea4 -[UILabel _drawTextInRect:baselineCalculationOnly:] + 3783
11 UIKitCore 0x00000001197b0dc8 -[UILabel drawTextInRect:] + 1051
12 UIKitCore 0x00000001197b4169 -[UILabel drawRect:] + 71
13 UIKitCore 0x00000001198656f3 -[UIView(CALayerDelegate) drawLayer:inContext:] + 632
14 QuartzCore 0x0000000104fbb6bf -[CALayer drawInContext:] + 285
15 QuartzCore 0x0000000104e85743 CABackingStoreUpdate_ + 190
16 QuartzCore 0x0000000104fc40e9 ___ZN2CA5Layer8display_Ev_block_invoke + 53
17 QuartzCore 0x0000000104fbb042 -[CALayer _display] + 2022
18 QuartzCore 0x0000000104fcda80 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 502
19 QuartzCore 0x0000000104f14848 _ZN2CA7Context18commit_transactionEPNS_11TransactionEd + 324
20 QuartzCore 0x0000000104f49b51 _ZN2CA11Transaction6commitEv + 643
21 UIKitCore 0x000000011937a3f4 _UIApplicationFlushRunLoopCATransactionIfTooLate + 104
22 UIKitCore 0x000000011941d57a __handleEventQueueInternal + 6902
23 CoreFoundation 0x0000000106769471 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
24 CoreFoundation 0x000000010676939c __CFRunLoopDoSource0 + 76
25 CoreFoundation 0x0000000106768b74 __CFRunLoopDoSources0 + 180
26 CoreFoundation 0x000000010676387f __CFRunLoopRun + 1263
27 CoreFoundation 0x0000000106763066 CFRunLoopRunSpecific + 438
28 GraphicsServices 0x000000010ac59bb0 GSEventRunModal + 65
29 UIKitCore 0x0000000119380d4d UIApplicationMain + 1621
30 Fab4Everyday 0x00000001026efb3b main + 75
31 libdyld.dylib 0x000000010c2e7c25 start + 1
32 ??? 0x0000000000000001 0x0 + 1) libc++abi.dylib:以NSException类型的完全例外终止
回答 1
Stack Overflow用户
发布于 2020-02-09 16:50:45
我用我认为是荒谬的方法解决了这个问题。虽然我修改了许多函数，简化了等等，但我所做的一项改变是给每个视图/导航控制器一个故事板ID和恢复ID。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/60066987
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