Question

由于要求为我们的应用程序使用第三方安全包装器，我们必须降级到XCode6.4，现在我们因为其中一个.xib文件出错而尝试构建项目时遇到问题。我删除了对此.xib的所有引用和项目构建，因此它必须与XIB中使用的仅XCode7 / iOS9功能有关。有什么想法吗？

    /Users/devarchitecture/Fundamentals/Fundamentals.iOS/Views/TableViewCells/ReportCell.xib: Error: 2016-04-13 13:29:58.717 ibtoold[10374:761527] [MT] DVTAssertions: ASSERTION FAILURE in /SourceCache/IDEInterfaceBuilder/IDEInterfaceBuilder-7706/InterfaceBuilderKit/Document/Archiving/IBDocumentUnarchiver.m:221
Details:  Failed to unarchive an instance of IBUIScreenMetrics
Object:   <IBDocumentUnarchiver: 0x7f82b84f5d40>
Method:   -unarchiveObjectFromElement:
Thread:   <NSThread: 0x7f82b8441910>{number = 1, name = main}
Hints: None
Backtrace:
  0  0x0000000100886c07 -[DVTAssertionHandler handleFailureInMethod:object:fileName:lineNumber:assertionSignature:messageFormat:arguments:] (in DVTFoundation)
  1  0x000000010088665f _DVTAssertionHandler (in DVTFoundation)
  2  0x000000010088694e _DVTAssertionFailureHandler (in DVTFoundation)
  3  0x000000010177c85a __51-[IBDocumentUnarchiver unarchiveObjectFromElement:]_block_invoke (in IDEInterfaceBuilderKit)
  4  0x000000010177a93a -[IBDocumentUnarchiver recurseWithElement:kind:invokingBlock:] (in IDEInterfaceBuilderKit)
  5  0x000000010177c3fb -[IBDocumentUnarchiver unarchiveObjectFromElement:] (in IDEInterfaceBuilderKit)
  6  0x000000010177f18f -[IBDocumentUnarchiver unarchiveObjectForKey:defaultValue:] (in IDEInterfaceBuilderKit)
  7  0x0000000107a2e58a (in IDEInterfaceBuilderCocoaTouchIntegration)
  8  0x0000000107a2e020 IBUIUnarchiveSimulatedMetric (in IDEInterfaceBuilderCocoaTouchIntegration)
  9  0x0000000107a2ddf4 (in IDEInterfaceBuilderCocoaTouchIntegration)
10  0x0000000107a2c239 (in IDEInterfaceBuilderCocoaTouchIntegration)
11  0x000000010177c737 __51-[IBDocumentUnarchiver unarchiveObjectFromElement:]_block_invoke (in IDEInterfaceBuilderKit)
12  0x000000010177a93a -[IBDocumentUnarchiver recurseWithElement:kind:invokingBlock:] (in IDEInterfaceBuilderKit)
13  0x000000010177c3fb -[IBDocumentUnarchiver unarchiveObjectFromElement:] (in IDEInterfaceBuilderKit)
14  0x000000010177f18f -[IBDocumentUnarchiver unarchiveObjectForKey:defaultValue:] (in IDEInterfaceBuilderKit)
15  0x0000000101703191 -[IBDocument unarchivePlatformIndependentDataWithUnarchiver:] (in IDEInterfaceBuilderKit)
16  0x0000000101702a6e -[IBDocument unarchiveDocument:] (in IDEInterfaceBuilderKit)
17  0x000000010177a93a -[IBDocumentUnarchiver recurseWithElement:kind:invokingBlock:] (in IDEInterfaceBuilderKit)
18  0x000000010177aba7 -[IBDocumentUnarchiver unarchiveDocument:] (in IDEInterfaceBuilderKit)
19  0x00000001016fa184 __61-[IBDocument decodeContentsOfURL:ofType:decodingStyle:error:]_block_invoke (in IDEInterfaceBuilderKit)
20  0x00000001017472a9 -[IBDocumentAutolayoutManager runBlockInNewArbitrationStackEntryWithBehavior:block:] (in IDEInterfaceBuilderKit)
21  0x000000010172ddd7 -[IBDocument modifyViewsInAutolayoutSafeWayWithoutUpdatingConstraintsDuring:] (in IDEInterfaceBuilderKit)
22  0x00000001016f9f66 -[IBDocument decodeContentsOfURL:ofType:decodingStyle:error:] (in IDEInterfaceBuilderKit)
23  0x00000001016f42b5 __39-[IBDocument readFromURL:ofType:error:]_block_invoke_2 (in IDEInterfaceBuilderKit)
24  0x0000000101752560 -[IBDocumentAutolayoutManager doNotSynchronouslyComputeAutolayoutStatusWhilePerformingBlock:] (in IDEInterfaceBuilderKit)
25  0x00000001016f4111 __39-[IBDocument readFromURL:ofType:error:]_block_invoke (in IDEInterfaceBuilderKit)
26  0x00000001017297db -[IBDocument invokeWithUndoSuppressed:] (in IDEInterfaceBuilderKit)
27  0x00000001016f3dc2 -[IBDocument readFromURL:ofType:error:] (in IDEInterfaceBuilderKit)
28  0x000000010068c590 (in ibtoold)
29  0x00000001006870b4 (in ibtoold)
30  0x000000010068e370 (in ibtoold)
31  0x0000000100694233 (in ibtoold)
32  0x00000001006947b0 (in ibtoold)
33  0x0000000100694683 (in ibtoold)
34  0x000000010068366a (in ibtoold)
35  0x0000000100693e2c (in ibtoold)
36  0x0000000100693074 (in ibtoold)
37  0x00007fff8fcc05c9 start (in libdyld.dylib)

Answer 1

我上周才遇到这个问题！在比较.xib文件之后，我注意到有问题的.xib包含了一个simulationMetricsContainer条目。我删除它，保存，我能够建立项目。

这是我删除的内容：

   <simulatedMetricsContainer key="defaultSimulatedMetrics">
        <simulatedStatusBarMetrics key="statusBar"/>
        <simulatedOrientationMetrics key="orientation"/>
        <simulatedScreenMetrics key="destination" type="iPad-1/2"/>
    </simulatedMetricsContainer>

我希望这会有所帮助。

史蒂夫

无法构建Xamarin iOS项目

1 个答案: