Can't reorder - crashes

[cvconover]

I have followed the I32RearrangeableExchangeableTablesViewController and when I reorder it crashes. Assuming my fault but not sure where to start looking. Tried debugging but still not seeing clear root cause.

I see it stating "This view probably hasn't received initWithFrame: or initWithCoder:" but not exactly sure what that means. My app was initially implemented back in 2011, so perhaps a version issue (ARC, or something to that effect).

Here is the debugger output with error below.

If you have any insights, would be much appreciated. This is a really great time saver for me. Thanks for putting it together and making it available.

2014-03-10 17:27:38.949 Lacrosse-Stats[609:70b] Dragging from destination to destination.
2014-03-10 17:27:38.950 Lacrosse-Stats[609:70b] Rearrangeing dst
2014-03-10 17:27:42.128 Lacrosse-Stats[609:70b] *** 6) start isCellInDstAtIndexPathExchangable
2014-03-10 17:27:42.128 Lacrosse-Stats[609:70b] Cell row: 3
2014-03-10 17:27:42.144 Lacrosse-Stats[609:70b] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Requesting the window of a view (<UITableViewCell: 0xdca2e00; frame = (0 0; 0 0); transform = [0, 0, 0, 0, 0, 0]; text = '2 - Frick, Andrew'; alpha = 0; autoresize = W; layer = (null)>) with a nil layer. This view probably hasn't received initWithFrame: or initWithCoder:.'
*** First throw call stack:
(
0 CoreFoundation 0x0389b5e4 exceptionPreprocess + 180
1 libobjc.A.dylib 0x02d898b6 objc_exception_throw + 44
2 CoreFoundation 0x0389b3bb +[NSException raise:format:] + 139
3 UIKit 0x01bb2f5b __windowForView + 467
4 UIKit 0x01bb52a0 -[UIView(Hierarchy) _postMovedFromSuperview:] + 28
5 UIKit 0x01bc04c1 -[UIView(Internal) _addSubview:positioned:relativeTo:] + 1847
6 UIKit 0x01bb39b1 -[UIView(Hierarchy) addSubview:] + 56
7 Lacrosse-Stats 0x00083d2f -[I3DragBetweenHelper animateDummyExchange:inContainer:withCompletionBlock:] + 879
8 Lacrosse-Stats 0x00088467 -[I3DragBetweenHelper handleDragFromDstStoppedInDstAtPoint:] + 1031
9 Lacrosse-Stats 0x00086949 -[I3DragBetweenHelper handleDragStopped:] + 1289
10 Lacrosse-Stats 0x0008623e -[I3DragBetweenHelper handlePan:] + 254
11 UIKit 0x01ed0e8c _UIGestureRecognizerSendActions + 230
12 UIKit 0x01ecfb00 -[UIGestureRecognizer _updateGestureWithEvent:buttonEvent:] + 383
13 UIKit 0x01ed156d -[UIGestureRecognizer _delayedUpdateGesture] + 60
14 UIKit 0x01ed4acd ___UIGestureRecognizerUpdate_block_invoke + 57
15 UIKit 0x01ed4a4e _UIGestureRecognizerRemoveObjectsFromArrayAndApplyBlocks + 317
16 UIKit 0x01ecb148 _UIGestureRecognizerUpdate + 199
17 UIKit 0x01b9719a -[UIWindow _sendGesturesForEvent:] + 1291
18 UIKit 0x01b980ba -[UIWindow sendEvent:] + 1030
19 UIKit 0x01b6be86 -[UIApplication sendEvent:] + 242
20 UIKit 0x01b5618f _UIApplicationHandleEventQueue + 11421
21 CoreFoundation 0x0382483f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 15
22 CoreFoundation 0x038241cb __CFRunLoopDoSources0 + 235
23 CoreFoundation 0x0384129e __CFRunLoopRun + 910
24 CoreFoundation 0x03840ac3 CFRunLoopRunSpecific + 467
25 CoreFoundation 0x038408db CFRunLoopRunInMode + 123
26 GraphicsServices 0x037559e2 GSEventRunModal + 192
27 GraphicsServices 0x03755809 GSEventRun + 104
28 UIKit 0x01b58d3b UIApplicationMain + 1225
29 Lacrosse-Stats 0x0000300d main + 125
30 libdyld.dylib 0x03270701 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)

[SteveFortune]

What version of iOS and device are you running this on?

[SteveFortune]

I have a feeling this is related to #8 and how NSKeyArchiver / NSKeyUnarchiver are used to clone the cells for animation.

But need to know more about the dev environment to resolve.

[cvconover]

Xcode 5 (latest Mac Mavericks, latest update, powerbook that is about 5
months old).
Original app was target at iOS 4.x I believe. Hasn't been migrated to be
ARC so still lots of release/retain code.

[SteveFortune]

Hmm ok. Are you running it ok an iOS 7 simulator? Or a device? Ive only been using this on devices and simulators that are iOS 6 and up so if youre running it on a previous verion of iOS i can imagine there will be problems.

Anyways ill see if I can reproduce the bug and post an update.

.happy coding! :)

[cvconover]

I was testing with sim with deployment target set to 6.0 but base SDK set to 7.0 (based on some recommendation I read about). Testing on sim and iPad with iOS 6.1, it crashes. For some reason I can't get it to produce error stack trace and it just freezes on this line
https://github.com/ice3-software/i3-dragndrop/blob/master/Classes/I3DragBetweenHelper.m#L176

Not even pressing the "continue" in debugger makes it advance.

Like I said, unless this is important for you to fix, don't waste any time on me. I'll keep plugging away.
Cheers
Craig

[cvconover]

I read #8 but I have simple text only cells.
I found a workaround but not of its impact on anything else. I just commented out lines 175 and 176 of the helper class and it works fine.

https://github.com/ice3-software/i3-dragndrop/blob/master/Classes/I3DragBetweenHelper.m#L175

Any idea what the issue might be?

[SteveFortune]

Ah right its because we're removing and then re-adding a view to the same superview. I think a potential fix/workaround could be to make another copy of the draggingView and add that to the superview instead. Again, I'll check it out when I get a spare sec.

[SteveFortune]

See #29 for possible progress on this one.

[SteveFortune]

See most recent comment on #29

[SteveFortune]

Fixed for v2.