使用 Xcode 13 构建后，应用程序在 iOS 12 及更低版本上崩溃

Question

在 iOS 9-15 上成功运行的应用程序现在在使用 Xcode 13.1 构建时在 iOS 9-12 上启动时崩溃（我刚刚升级到 M1 Pro）。

由于使用了仅存在于 iOS 13+ 上的 UITabBarAppearance，它在取消归档主 storyboard 时崩溃（请参见下面的跟踪）。 我的 storyboard 入口点是标签栏 Controller。

我没有编辑我的 storyboard 文件，因为这是在 iOS 9-15 上与以前的 Xcode 版本一起工作的，并且在我的任何代码运行之前发生崩溃。

希望这是一个仅限模拟器的问题（我没有旧的 iOS 设备）我上传到商店，但应用程序在 iOS12 及更低版本的真实设备上启动时也会崩溃。 https://apps.apple.com/nz/app/campermate-australia-nz/id1586561660

最低操作系统目标是 9.0。 我们可以放弃对 iOS 9-11 的支持，但我们仍然有大量 iPhone 6 和 5 用户（仅限于 iOS 12）。

我怎样才能解决这个问题？

2021-12-15 10:51:09.526554+1300 TTG_Explore_Australia[36783:2248622] libMobileGestalt MobileGestalt.c:890: MGIsDeviceOneOfType is not supported on this platform.
2021-12-15 10:51:09.954515+1300 TTG_Explore_Australia[36783:2248622] *** Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: 'Could not instantiate class named UITabBarAppearance because no class named UITabBarAppearance was found; the class needs to be defined in source code or linked in from a library (ensure the class is part of the correct target)'
*** First throw call stack:
(
    0   CoreFoundation                      0x0000000113cae8db __exceptionPreprocess + 331
    1   libobjc.A.dylib                     0x0000000113259ac5 objc_exception_throw + 48
    2   CoreFoundation                      0x0000000113cae735 +[NSException raise:format:] + 197
    3   UIFoundation                        0x00000001176626c9 UINibDecoderDecodeObjectForValue + 360
    4   UIFoundation                        0x0000000117662af9 UINibDecoderDecodeObjectForValue + 1432
    5   UIFoundation                        0x0000000117662554 -[UINibDecoder decodeObjectForKey:] + 251
    6   UIKitCore                           0x000000011ca0c827 -[UINib instantiateWithOwner:options:] + 1306
    7   UIKitCore                           0x000000011cf28594 -[UIStoryboard instantiateViewControllerWithIdentifier:] + 181
    8   UIKitCore                           0x000000011cd8c809 -[UIApplication _loadMainStoryboardFileNamed:bundle:] + 111
    9   UIKitCore                           0x000000011cd8ccb1 -[UIApplication _loadMainInterfaceFile] + 274
    10  UIKitCore                           0x000000011cd8b3e5 -[UIApplication _runWithMainScene:transitionContext:completion:] + 1360
    11  UIKitCore                           0x000000011c5cfa4e __111-[__UICanvasLifecycleMonitor_Compatability _scheduleFirstCommitForScene:transition:firstActivation:completion:]_block_invoke + 904
    12  UIKitCore                           0x000000011c5d8346 +[_UICanvas _enqueuePostSettingUpdateTransactionBlock:] + 153
    13  UIKitCore                           0x000000011c5cf664 -[__UICanvasLifecycleMonitor_Compatability _scheduleFirstCommitForScene:transition:firstActivation:completion:] + 236
    14  UIKitCore                           0x000000011c5cffc0 -[__UICanvasLifecycleMonitor_Compatability activateEventsOnly:withContext:completion:] + 1091
    15  UIKitCore                           0x000000011c5ce332 __82-[_UIApplicationCanvas _transitionLifecycleStateWithTransitionContext:completion:]_block_invoke + 782
    16  UIKitCore                           0x000000011c5cdfe9 -[_UIApplicationCanvas _transitionLifecycleStateWithTransitionContext:completion:] + 433
    17  UIKitCore                           0x000000011c5d2d2e __125-[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:]_block_invoke + 576
    18  UIKitCore                           0x000000011c5d3988 _performActionsWithDelayForTransitionContext + 100
    19  UIKitCore                           0x000000011c5d2a95 -[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:] + 223
    20  UIKitCore                           0x000000011c5d7a48 -[_UICanvas scene:didUpdateWithDiff:transitionContext:completion:] + 392
    21  UIKitCore                           0x000000011cd89dc8 -[UIApplication workspace:didCreateScene:withTransitionContext:completion:] + 514
    22  UIKitCore                           0x000000011c94102f -[UIApplicationSceneClientAgent scene:didInitializeWithEvent:completion:] + 361
    23  FrontBoardServices                  0x000000011aeb4d25 -[FBSSceneImpl _didCreateWithTransitionContext:completion:] + 448
    24  FrontBoardServices                  0x000000011aebead6 __56-[FBSWorkspace client:handleCreateScene:withCompletion:]_block_invoke_2 + 283
    25  FrontBoardServices                  0x000000011aebe300 __40-[FBSWorkspace _performDelegateCallOut:]_block_invoke + 53
    26  libdispatch.dylib                   0x0000000114cc4db5 _dispatch_client_callout + 8
    27  libdispatch.dylib                   0x0000000114cc82ba _dispatch_block_invoke_direct + 300
    28  FrontBoardServices                  0x000000011aef00da __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 30
    29  FrontBoardServices                  0x000000011aeefd92 -[FBSSerialQueue _performNext] + 451
    30  FrontBoardServices                  0x000000011aef0327 -[FBSSerialQueue _performNextFromRunLoopSource] + 42
    31  CoreFoundation                      0x0000000113c15db1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
    32  CoreFoundation                      0x0000000113c15633 __CFRunLoopDoSources0 + 243
    33  CoreFoundation                      0x0000000113c0fcef __CFRunLoopRun + 1231
    34  CoreFoundation                      0x0000000113c0f4d2 CFRunLoopRunSpecific + 626
    35  GraphicsServices                    0x00000001169e62fe GSEventRunModal + 65
    36  UIKitCore                           0x000000011cd8cfc2 UIApplicationMain + 140
    37  TTG_Explore_Australia               0x0000000100e63dd8 main + 104
    38  ???                                 0x0000000202b024fe 0x0 + 8635032830
    39  ???                                 0x0000000000000003 0x0 + 3
)
libc++abi.dylib: terminating with uncaught exception of type NSException
*** Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: 'Could not instantiate class named UITabBarAppearance because no class named UITabBarAppearance was found; the class needs to be defined in source code or linked in from a library (ensure the class is part of the correct target)'
terminating with uncaught exception of type NSException
CoreSimulator 776.4 - Device: iPhone 8 Plus (B0A6FB7E-392D-40E7-AC7C-B6AF109ABE60) - Runtime: iOS 12.4 (16G73) - DeviceType: iPhone 8 Plus

Answer 1

在堆栈跟踪的底部它说：

*** 由于未捕获的异常“NSInvalidUnarchiveOperationException”而终止应用程序，原因：“无法实例化名为 UITabBarAppearance 的 class，因为找不到名为 UITabBarAppearance 的 class ； class 需要在源代码中定义或从库中链接（确保 class 是正确目标的一部分）'以 NSException 类型的未捕获异常终止

UITabBarAppearance是在 iOS 13 中引入的，因此它不适用于较旧的 iOS 版本。 检查您的代码中是否出现任何UITabBarAppearance并将它们删除或包装在if #available中。 storyboard 在内部使用UITabBarAppearance也可能是一个问题。

Answer 2

XCode 在我不知情的情况下偷偷地将这些插入到我的 storyboard 文件中！

<tabBarAppearance key="standardAppearance"/>

和

<navigationBarAppearance key="standardAppearance"/>

删除这些修复它。 我在版本检查中的代码中设置了 iOS13+ 的外观。

Answer 3

我通过在构建阶段手动将 LinkPresentation.framework 添加到“Link Binary with Libraries”并将其状态设置为 Optional 来解决此问题。