If user touch the UITableView
and just Update the TableView
for following code
[self.myTableView beginUpdates];
[myTableView endUpdates];
then it produce the following crash report.
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
Why is the application throwing a NSInternalInconsistencyException
?
I often see this when my count is not correct. Based on this:
I'm guessing that your table had 7 elements in it (as reported by
tableView:numberOfRowsInSection:
) was returning 7 and now is returning 1. Which leads me to belive you think callingIs sufficient when you are removing rows.
But you need to tell you UITableView what rows are being removed (or added) first. This will depend on your exact situation, but if you wanted to remove the first seven rows of section zero it would look like this.
Also as @Marco said, just use the same pointer to your table otherwise it's a bit confusing, which I did in my example.
Or if you just wanted to tell you table to completly reload you can just call reloadData instaed.
I think this would be less efficient then the other way of manually specify which rows are being added or removed, but in a table of 7 I think it would be fine.