iOS應用程序在UITableViewDataSource方法拋出異常後終止

在仔細地遵循Table View Programming Guide for iOS中有關正確調用委託方法和數據源方法的順序的示例和說明之後，我想我已經很好地瞭解瞭如何實現在Figure 7-1和下面的列表中顯示的「握手」，但顯然不是。iOS應用程序在UITableViewDataSource方法拋出異常後終止

下面是我使用的代碼...

- (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NSArray實例保存由UITableViewCell■從tableView所代表的對象。

...和錯誤，我越來越...

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

來源

2010-08-28 Alexsander Akers

從數據中刪除的行之前設置刪除對象。

來源

2010-08-28 03:14:33 thelaws

這不僅僅是這樣，而且從我讀過的內容來看，它與'UITableView'數據源中的'-tableView：numberOfRowsInSection：'方法有關。 – 2010-08-28 05:37:05

非常感謝。 – 2010-08-28 05:37:20

iOS應用程序在UITableViewDataSource方法拋出異常後終止

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