删除 Bridging Header 后从 Interface Builder 拖动时 Xcode 崩溃答案

【问题标题】：Xcode crashes when dragging from Interface Builder after deleting Bridging Header删除 Bridging Header 后从 Interface Builder 拖动时 Xcode 崩溃
【发布时间】：2015-07-18 16:26:43
【问题描述】：

我尝试在 Swift 项目中使用一些 Objective-C 代码，但当我找到实现结果的替代方法时，最终删除了所述代码和桥接头。除了我尝试通过使用助手编辑器从 IB 拖动到 .swift 文件来创建新的插座连接之外，一切似乎都运行良好（即运行构建、IB 连接中的现有插座等）。我认为这与删除我的桥接头有关，但我不确定是什么。我试过运行 Clean 并重新启动计算机，但没有运气。

编辑：应该提到问题不是无法拖动，而是 Xcode 在输入出口名称并按 Enter 后崩溃。

编辑 2：这是 Xcode 崩溃时的错误输出：

Exception Codes:       0x0000000000000000, 0x0000000000000000

Application Specific Information:
ProductBuildVersion: 6D2105
UNCAUGHT EXCEPTION (NSInvalidArgumentException): +[IDESwiftSourceCodeGenerator     isTeardownCounterpart:]: unrecognized selector sent to class 0x112de75c0
UserInfo: (null)
Hints: None
Backtrace:
  0  0x00007fff94e37024 __exceptionPreprocess (in CoreFoundation)
  1  0x00000001011d9bb4 DVTFailureHintExceptionPreprocessor (in DVTFoundation)
  2  0x00007fff9212776e objc_exception_throw (in libobjc.A.dylib)
  3  0x00007fff94e39fad +[NSObject(NSObject) doesNotRecognizeSelector:] (in CoreFoundation)
  4  0x00007fff94d7fe24 ___forwarding___ (in CoreFoundation)
  5  0x00007fff94d7f998 _CF_forwarding_prep_0 (in CoreFoundation)
  6  0x0000000112d30532 __91-[IDESwiftSourceCodeGenerator prepareToAddPropertyWithName:type:inClassItem:options:error:]_block_invoke_2 (in IDELanguageSupportUI)
  7  0x000000010266ceb4 -[IDESourceCodeGenerator prepareToAddSourceCodeForCounterparts:documentLocationForCounterpartBlock:addSourceCodeForCounterpartBlock:options:error:] (in IDEKit)
  8  0x0000000112d3013f -[IDESwiftSourceCodeGenerator prepareToAddPropertyWithName:type:inClassItem:options:error:] (in IDELanguageSupportUI)
  9  0x0000000112d0b69b -[IDEIBSwiftOutletSourceCodeConnectionContext prepareToInsertSourceCode:] (in IDELanguageSupportUI)
 10  0x000000010c3f0a86 -[IBSourceCodeConnectionEndPointHandler insertOrPrepareToInsertSourceCodeForConnectionContext:prepareOrInsertBlock:] (in IDEInterfaceBuilderKit)
 11  0x000000010c3f0eda -[IBSourceCodeConnectionEndPointHandler insertCodeForConnectionContext:] (in IDEInterfaceBuilderKit)
 12  0x000000010c3f1bbd -[IBSourceCodeConnectionEndPointHandler configuredAndCompletedConnectionWithSourceObject:] (in IDEInterfaceBuilderKit)
 13  0x000000010c184b1b -[IBConnectionManager beginOldSchoolConnectingFromObject:withEvent:inWindow:usingSourceLocator:] (in IDEInterfaceBuilderKit)
 14  0x000000010c184e74 -[IBConnectionManager beginOldSchoolConnectingFromEditorCanvasFrameController:initialEndPoint:withEvent:] (in IDEInterfaceBuilderKit)
 15  0x000000010c270bf5 -[IBEditorCanvasFrameController sendEvent:] (in IDEInterfaceBuilderKit)
 16  0x000000010c497689 -[IBViewEditorCanvasFrameController sendEvent:] (in IDEInterfaceBuilderKit)
 17  0x000000010c25fe85 -[IBEditorCanvasFrame mouseDragged:] (in IDEInterfaceBuilderKit)
 18  0x00007fff8f0cbf12 -[NSWindow _reallySendEvent:isDelayedEvent:] (in AppKit)
 19  0x00007fff8ea5dd76 -[NSWindow sendEvent:] (in AppKit)
 20  0x00000001024a7168 -[IDEWorkspaceWindow sendEvent:] (in IDEKit)
 21  0x00007fff8ea5a312 -[NSApplication sendEvent:] (in AppKit)
 22  0x0000000102250c14 -[IDEApplication sendEvent:] (in IDEKit)
 23  0x00007fff8e983c68 -[NSApplication run] (in AppKit)
 24  0x00007fff8e900354 NSApplicationMain (in AppKit)
 25  0x00007fff939b25c9 start (in libdyld.dylib)

abort() called

Application Specific Signatures:
NSInvalidArgumentException

【问题讨论】：

标签： ios xcode swift interface-builder xib

【解决方案1】：

您的项目似乎已损坏。您可以尝试将您的插座从您的代码拖放到您的 xib 文件中。

在 .swift 文件中输入：

@IBOutlet var varname：输入！

现在从你的代码拖到你的 xib 文件中。

【讨论】：

效果很好，非常感谢 :) 试图弄清楚项目是如何被破坏的，希望我现在没有为那个桥接头烦恼：/

【解决方案2】：

您是否检查过您的类和模块是否正确？

您可以点击箭头并显示您的 ViewController 实现吗？

【讨论】：

是的，对不起，我忘了提，这是我检查的第一件事，并显示了正确的实现。还忘了提到问题是当我使用助手编辑器从 xib 拖动到 .swift 时，当我输入插座的名称时出现错误，按回车键，然后 Xcode 崩溃。