Question

如果用户触摸UITableView，只需更新以下代码的TableView

[self.myTableView beginUpdates];
[myTableView endUpdates];

然后它会产生以下崩溃报告。

2013-12-17 17:27:33.446 planobot[12300:a0b] *** Assertion failure in -[UITableView _endCellAnimationsWithContext:], /SourceCache/UIKit_Sim/UIKit-2903.23/UITableView.m:1330
2013-12-17 17:27:33.469 planobot[12300:a0b] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid update: invalid number of rows in section 0.  The number of rows contained in an existing section after the update (1) must be equal to the number of rows contained in that section before the update (7), plus or minus the number of rows inserted or deleted from that section (0 inserted, 0 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out).'
*** First throw call stack:
(
    0   CoreFoundation                      0x0210e5e4 __exceptionPreprocess + 180
    1   libobjc.A.dylib                     0x01e918b6 objc_exception_throw + 44
    2   CoreFoundation                      0x0210e448 +[NSException raise:format:arguments:] + 136
    3   Foundation                          0x00fe5fee -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 116
    4   UIKit                               0x0024485d -[UITableView _endCellAnimationsWithContext:] + 13402
    5   UIKit                               0x00253caa -[UITableView endUpdatesWithContext:] + 51
    6   UIKit                               0x00253cd8 -[UITableView endUpdates] + 41
    7   planobot                            0x0004f34a -[DailyReportViewController tableView:didSelectRowAtIndexPath:] + 1658
    8   UIKit                               0x002557b1 -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:] + 1513
    9   UIKit                               0x00255924 -[UITableView _userSelectRowAtPendingSelectionIndexPath:] + 279
    10  UIKit                               0x00259908 __38-[UITableView touchesEnded:withEvent:]_block_invoke + 43
    11  UIKit                               0x00190183 ___afterCACommitHandler_block_invoke + 15
    12  UIKit                               0x0019012e _applyBlockToCFArrayCopiedToStack + 403
    13  UIKit                               0x0018ff5a _afterCACommitHandler + 532
    14  CoreFoundation                      0x020d64ce __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 30
    15  CoreFoundation                      0x020d641f __CFRunLoopDoObservers + 399
    16  CoreFoundation                      0x020b4344 __CFRunLoopRun + 1076
    17  CoreFoundation                      0x020b3ac3 CFRunLoopRunSpecific + 467
    18  CoreFoundation                      0x020b38db CFRunLoopRunInMode + 123
    19  GraphicsServices                    0x02fec9e2 GSEventRunModal + 192
    20  GraphicsServices                    0x02fec809 GSEventRun + 104
    21  UIKit                               0x00173d3b UIApplicationMain + 1225
    22  planobot                            0x000a6a4d main + 141
    23  planobot                            0x000022b5 start + 53
)
libc++abi.dylib: terminating with uncaught exception of type NSException

为什么应用程序会抛出NSInternalInconsistencyException？

Answer 1

而不是：

[self.myTableView beginUpdates];
[myTableView endUpdates];

试试这个：

[self.myTableView beginUpdates];
[self.myTableView endUpdates];

我怀疑endUpdates财产上没有调用myTableView。但是，beginUpdates会导致：

不平衡beginUpdates / endUpdates来电和
NSInternalInconsistencyException

Answer 2

当我的计数不正确时，我经常会看到这一点。基于此：

reason: 'Invalid update: invalid number of rows in section 0.  The number of rows contained in an existing section after the update (1) must be equal to the number of rows contained in that section before the update (7), plus or minus the number of rows inserted or deleted from that section (0 inserted, 0 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out).'

我猜你的桌子中有7个元素（由tableView:numberOfRowsInSection:报告）返回7并且现在返回1.这让我相信你想要调用

 [self.myTableView beginUpdates];
 [myTableView endUpdates];

删除行时就足够了。

但是你需要告诉你UITableView首先删除（或添加）了哪些行。这将取决于您的具体情况，但如果您想删除第0部分的前七行，它将看起来像这样。

NSMutableArray *indexes = [[NSMutableArray alloc] init];
for (int i = 0; i <= 6; i++)
{
    [indexes addObject:[NSIndexPath indexPathForItem:i inSection:0]];
}
[myTable beginUpdates];
[myTable deleteRowsAtIndexPaths:indexes withRowAnimation:NO];
[myTable endUpdates];

同样正如@Marco所说，只是使用相同的指针指向你的表，否则它有点令人困惑，我在我的例子中做了。

或者，如果你只想告诉你要完全重载的表，你只需调用reloadData instaed。

[myTable reloadData];

我认为这比手动指定添加或删除哪些行的其他方式效率低，但在7表中我认为没问题。

因未捕获的异常终止应用程序＆＃39; NSInternalInconsistencyException＆＃39;

2 个答案: