ios - 从不同 Storyboard复制/粘贴 View 时 Xcode 11 崩溃

Question

我在 Catalina 上运行 Xcode 11 时遇到问题(Moave 也有同样的问题)。当我尝试将 View 或 ViewController 从一个 Storyboard复制/粘贴到另一个 Xcode 时，会因以下异常而崩溃:

...
Exception Type:        EXC_CRASH (SIGABRT)
Exception Codes:       0x0000000000000000, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Application Specific Information:
Sending paste: to IBStructureAreaDockView from <NSMenuItem: 0x7fe24030ddd0 Paste>
ProductBuildVersion: 11A1027
ASSERTION FAILURE in /Library/Caches/com.apple.xbs/Sources/IDEInterfaceBuilder/IDEInterfaceBuilder-15400/InterfaceBuilderKit/WidgetIntegration/View/IBViewIntegration.m:2451
Details:  There should only be 1 parent of all the constraint items extracted from the pasteboard: {(
)}
Object:   <IBUIView: 0x7fe23db1c600>
Method:   -ibDidExtractObjects:fromPasteboard:intoDocument:context:
Thread:   <NSThread: 0x7fe23ac17e80>{number = 1, name = main}
Hints:   
  0: Sending paste: to IBStructureAreaDockView from <NSMenuItem: 0x7fe24030ddd0 Paste>
Backtrace:
  0   -[IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:assertionSignature:messageFormat:arguments:] (in IDEKit)
  1   _DVTAssertionHandler (in DVTFoundation)
  2   _DVTAssertionFailureHandler (in DVTFoundation)
  3   -[NSView(IBViewIntegration) ibDidExtractObjects:fromPasteboard:intoDocument:context:] (in IDEInterfaceBuilderKit)
  4   -[IBUIView(IBUIViewIntegration) ibDidExtractObjects:fromPasteboard:intoDocument:context:] (in IDEInterfaceBuilderCocoaTouchIntegration)
  5   -[IBDocument ibDidExtractObjects:fromPasteboard:context:] (in IDEInterfaceBuilderKit)
  6   -[IBDocument insertObjectsFromPasteboard:ofType:asChildrenOfObject:atIndex:context:finishExtractingObjectsBlock:] (in IDEInterfaceBuilderKit)
  7   -[IBDocument insertOrMoveChildrenFromPasteboard:ofType:asChildrenOfObject:atIndex:context:finishExtractingObjectsBlock:] (in IDEInterfaceBuilderKit)
  8   -[IBDocument addOrMoveChildrenFromPasteboard:ofType:toObject:context:finishExtractingObjectsBlock:] (in IDEInterfaceBuilderKit)
  9   -[IBStoryboardDocument addOrMoveChildrenFromPasteboard:ofType:toSceneGroup:context:] (in IDEInterfaceBuilderKit)
 10   -[IBSceneDockViewController performDockPasteWithPasteboard:context:] (in IDEInterfaceBuilderKit)
 11   -[IBSceneDockViewController dockViewPerformPaste:] (in IDEInterfaceBuilderKit)
 12   -[IBStructureAreaDockView paste:] (in IDEInterfaceBuilderKit)
 13   -[NSApplication(NSResponder) sendAction:to:from:] (in AppKit)
 14   __37-[DVTApplication sendAction:to:from:]_block_invoke.86 (in DVTKit)
 15   DVTInvokeWithFailureHint (in DVTFoundation)
 16   -[DVTApplication sendAction:to:from:] (in DVTKit)
 17   -[NSMenuItem _corePerformAction] (in AppKit)
 18   -[NSCarbonMenuImpl performActionWithHighlightingForItemAtIndex:] (in AppKit)
 19   -[NSMenu performKeyEquivalent:] (in AppKit)
 20   routeKeyEquivalent (in AppKit)
 21   -[NSApplication(NSEvent) sendEvent:] (in AppKit)
 22   -[IDEApplication sendEvent:] (in IDEKit)
 23   -[NSApplication run] (in AppKit)
 24   NSApplicationMain (in AppKit)
 25   main (in Xcode)
 26   start (in libdyld.dylib)

Performing @selector(paste:) from sender NSMenuItem 0x7fe24030ddd0
abort() called

Application Specific Signatures:
[parentsOfItemsInConstraints count] == 1
...

这件事发生在别人身上吗？这是 Storyboard 不支持的东西吗？

Answer 1

对我来说，问题是因为我的应用程序在后台运行。关闭模拟器后，我可以复制/剪切和粘贴(即使在不同的 Storyboard文件中)。