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我有一个使用 UICollectionViewController 为 iOS 6 编写的应用程序，该应用程序运行良好，但是当我尝试在 Xcode 5 中编译时，我得到了下面的错误。

由于未捕获的异常“NSInternalInconsistencyException”而终止应用程序，原因：“setCollectionViewLayout 中的布局不能为零：”...

我尝试使用此解决方案，但我不断收到相同的错误。有任何想法吗？

CollectionViewLayout *layout = [[CollectionViewLayout alloc] init];

self.collectionView = [[UICollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:layout];
[self.collectionView registerClass:[Cell class] forCellWithReuseIdentifier:ItemIdentifier];
[self.collectionView registerClass:[HeaderCollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"HeaderView"];

self.collectionLayout.headerReferenceSize = CGSizeMake(0, 50);
self.collectionView.delegate = self;
self.collectionView.dataSource = self;

self.collectionView.indicatorStyle = UIScrollViewIndicatorStyleWhite;
self.collectionLayout.scrollDirection = UICollectionViewScrollDirectionVertical;

//堆栈跟踪

2013-10-01 14:15:37.140 MemberCatalog[10841:a0b] *** Assertion failure in -[UICollectionView setCollectionViewLayout:], /SourceCache/UIKit_Sim/UIKit-2903.2/UICollectionView.m:2001
2013-10-01 14:15:37.186 MemberCatalog[10841:a0b] Uncaught exception: NSInternalInconsistencyException
Reason: layout cannot be nil in setCollectionViewLayout:
User Info: (null)
Call Stack: (
    0   CoreFoundation                      0x031e75e4 __exceptionPreprocess + 180
    1   libobjc.A.dylib                     0x02c548b6 objc_exception_throw + 44
    2   CoreFoundation                      0x031e7448 +[NSException raise:format:arguments:] + 136
    3   Foundation                          0x0029923e -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 116
    4   UIKit                               0x00cdeba3 -[UICollectionView setCollectionViewLayout:] + 156
    5   UIKit                               0x00cfcd7b -[UICollectionViewControllerWrapperView didMoveToSuperview] + 462
    6   UIKit                               0x007261a6 __45-[UIView(Hierarchy) _postMovedFromSuperview:]_block_invoke + 472
    7   UIKit                               0x00725ef8 -[UIView(Hierarchy) _postMovedFromSuperview:] + 260
    8   UIKit                               0x00731031 -[UIView(Internal) _addSubview:positioned:relativeTo:] + 1847
    9   UIKit                               0x00724521 -[UIView(Hierarchy) addSubview:] + 56
    10  UIKit                               0x007d66eb +[UIViewControllerWrapperView wrapperViewForView:wrapperFrame:viewFrame:] + 382
    11  UIKit                               0x0080c867 -[UITabBarController _wrapperViewForViewController:] + 221
    12  UIKit                               0x00813a60 -[UITabBarController transitionFromViewController:toViewController:transition:shouldSetSelected:] + 441
    13  UIKit                               0x00813262 -[UITabBarController transitionFromViewController:toViewController:] + 63
    14  UIKit                               0x0080f64b -[UITabBarController _setSelectedViewController:] + 279
    15  UIKit                               0x0080f470 -[UITabBarController setSelectedIndex:] + 261
    16  MemberCatalog                   0x000aa9f8 -[MainViewController updateTabBar:] + 584
    17  MemberCatalog                   0x000ab872 -[MainViewController showCategory::] + 3538
    18  MemberCatalog                   0x000abe30 -[MainViewController menuButtonTap:] + 1296
    19  libobjc.A.dylib                     0x02c66874 -[NSObject performSelector:withObject:withObject:] + 77
    20  UIKit                               0x006cac8c -[UIApplication sendAction:to:from:forEvent:] + 108
    21  UIKit                               0x006cac18 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 61
    22  UIKit                               0x007c26d9 -[UIControl sendAction:to:forEvent:] + 66
    23  UIKit                               0x007c2a9c -[UIControl _sendActionsForEvents:withEvent:] + 577
    24  UIKit                               0x007c1d4b -[UIControl touchesEnded:withEvent:] + 641
    25  UIKit                               0x007080cd -[UIWindow _sendTouchesForEvent:] + 852
    26  UIKit                               0x00708d34 -[UIWindow sendEvent:] + 1232
    27  UIKit                               0x006dca36 -[UIApplication sendEvent:] + 242
    28  UIKit                               0x006c6d9f _UIApplicationHandleEventQueue + 11421
    29  CoreFoundation                      0x031708af __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
    30  CoreFoundation                      0x0317023b __CFRunLoopDoSources0 + 235
    31  CoreFoundation                      0x0318d30e __CFRunLoopRun + 910
    32  CoreFoundation                      0x0318cb33 CFRunLoopRunSpecific + 467
    33  CoreFoundation                      0x0318c94b CFRunLoopRunInMode + 123
    34  GraphicsServices                    0x03c6a9d7 GSEventRunModal + 192
    35  GraphicsServices                    0x03c6a7fe GSEventRun + 104
    36  UIKit                               0x006c994b UIApplicationMain + 1225
    37  MemberCatalog                       0x000033e6 main + 134
    38  libdyld.dylib                       0x0395a725 start + 0
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1 回答 1

-1

请删除此行：self.collectionLayout.headerReferenceSize = CGSizeMake(0, 50);

那么，它应该可以工作

于 2016-02-24T11:50:59.993 回答