仔细按照 Table View Programming Guide for iOS 中关于调用UITableView委托和数据源方法的正确顺序的示例和说明，我认为我有个好主意如何实现 Figure 7-1 中显示的“握手”以及后面的列表，但显然不是。
这是我正在使用的代码......
- (void) tableView: (UITableView *) tableView commitEditingStyle: (UITableViewCellEditingStyle) editingStyle forRowAtIndexPath: (NSIndexPath *) indexPath {
NSLog(@"Removing %@ row %d.", [dataModel objectAtIndex: indexPath.row], indexPath.row);
[tableView deleteRowsAtIndexPaths: [NSArray arrayWithObjects: indexPath, nil] withRowAnimation: UITableViewRowAnimationFade];
[dataModel removeObjectAtIndex: indexPath.row];
}
tableView是UITableView
dataModel是一个NSArray实例，用于保存UITableViewCell中tableView代表的对象。
......以及我得到的错误......
2010-08-27 21:53:17.971 SportWatch[1299:307] *** Assertion failure in -[UITableView _endCellAnimationsWithContext:], /SourceCache/UIKit/UIKit-1262.58/UITableView.m:920
2010-08-27 21:53:17.992 SportWatch[1299:307] *** 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 (4) must be equal to the number of rows contained in that section before the update (4), plus or minus the number of rows inserted or deleted from that section (0 inserted, 1 deleted).'
*** Call stack at first throw:
(
0 CoreFoundation 0x35411ed3 __exceptionPreprocess + 114
1 libobjc.A.dylib 0x311f0811 objc_exception_throw + 24
2 CoreFoundation 0x35411d15 +[NSException raise:format:arguments:] + 68
3 Foundation 0x332b932f -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 62
4 UIKit 0x338dcda1 -[UITableView(_UITableViewPrivate) _endCellAnimationsWithContext:] + 4524
5 UIKit 0x338d586d -[UITableView _updateRowsAtIndexPaths:updateAction:withRowAnimation:] + 204
6 UIKit 0x338d5775 -[UITableView deleteRowsAtIndexPaths:withRowAnimation:] + 20
7 SportWatch 0x000060e7 -[MainViewController tableView:commitEditingStyle:forRowAtIndexPath:] + 670
8 UIKit 0x338d3c3f -[UITableView(UITableViewInternal) animateDeletionOfRowWithCell:] + 58
9 UIKit 0x33984071 -[UITableViewCell(UITableViewCellInternal) deleteConfirmationControlWasClicked:] + 28
10 CoreFoundation 0x353b9719 -[NSObject(NSObject) performSelector:withObject:withObject:] + 24
11 UIKit 0x33831d59 -[UIApplication sendAction:to:from:forEvent:] + 84
12 UIKit 0x33831cf9 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 32
13 UIKit 0x33831ccb -[UIControl sendAction:to:forEvent:] + 38
14 UIKit 0x33831a1d -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 356
15 UIKit 0x3383206b -[UIControl touchesEnded:withEvent:] + 342
16 UIKit 0x338309f5 -[UIWindow _sendTouchesForEvent:] + 368
17 UIKit 0x3383036f -[UIWindow sendEvent:] + 262
18 UIKit 0x3382ae13 -[UIApplication sendEvent:] + 298
19 UIKit 0x3382a74b _UIApplicationHandleEvent + 5110
20 GraphicsServices 0x3171a04b PurpleEventCallback + 666
21 CoreFoundation 0x353a6ce3 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 26
22 CoreFoundation 0x353a6ca7 __CFRunLoopDoSource1 + 166
23 CoreFoundation 0x3539956d __CFRunLoopRun + 520
24 CoreFoundation 0x35399277 CFRunLoopRunSpecific + 230
25 CoreFoundation 0x3539917f CFRunLoopRunInMode + 58
26 GraphicsServices 0x317195f3 GSEventRunModal + 114
27 GraphicsServices 0x3171969f GSEventRun + 62
28 UIKit 0x337d148b -[UIApplication _run] + 402
29 UIKit 0x337cf69f UIApplicationMain + 670
30 SportWatch 0x00002b23 main + 70
31 SportWatch 0x00002ad8 start + 40
)
terminate called after throwing an instance of 'NSException'
Program received signal: “SIGABRT”.
kill
Current language: auto; currently objective-c
quit
答案 0 :(得分：1)
在删除行之前从数据集中删除对象。