Crashes when deleting an item in second last row

[stevenchan]

App crashes when deleting items in second last row

This happens when

• Content height is greater than grid view frame height
• Scrolled to the bottom
• Last row has only ONE item

It seems like the problem is in this line which adds NSNotFound to animatingDestinationIndices (AQGridView.m:1631, 5995654c1ed39a81a09e):
for ( AQGridViewAnimatorItem * item in _animatingCells )
{
[animatingDestinationIndices addIndex: item.index];
}

I got this from the debugger console:
* Terminating app due to uncaught exception 'NSRangeException', reason: '* -[NSMutableIndexSet addIndexesInRange:]: Range {2147483647, 1} exceeds maximum index value of NSNotFound - 1'
*** Call stack at first throw:
(
0 CoreFoundation 0x3587a987 exceptionPreprocess + 114
1 libobjc.A.dylib 0x34a8249d objc_exception_throw + 24
2 CoreFoundation 0x3587a7c9 +[NSException raise:format:arguments:] + 68
3 CoreFoundation 0x3587a803 +[NSException raise:format:] + 34
4 Foundation 0x3118d10d -[NSMutableIndexSet addIndexesInRange:] + 96
5 Foundation 0x3118d0a7 -[NSMutableIndexSet addIndex:] + 18
6 50k 0x0003589f -[AQGridView(AQCellLayout) updateVisibleGridCellsNow] + 3386
7 50k 0x000310bb -[AQGridView layoutSubviews] + 202
8 UIKit 0x341b80cf -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 26
9 CoreFoundation 0x35818bbf -[NSObject(NSObject) performSelector:withObject:] + 22
10 QuartzCore 0x31075685 -[CALayer layoutSublayers] + 120
11 QuartzCore 0x3107543d CALayerLayoutIfNeeded + 184
12 QuartzCore 0x3106f56d _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 212
13 QuartzCore 0x3106f383 _ZN2CA11Transaction6commitEv + 190
14 QuartzCore 0x31092f9d _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 52
15 CoreFoundation 0x3580ac59 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION + 16
16 CoreFoundation 0x3580aacd __CFRunLoopDoObservers + 412
17 CoreFoundation 0x358020cb __CFRunLoopRun + 854
18 CoreFoundation 0x35801c87 CFRunLoopRunSpecific + 230
19 CoreFoundation 0x35801b8f CFRunLoopRunInMode + 58
20 GraphicsServices 0x320c84ab GSEventRunModal + 114
21 GraphicsServices 0x320c8557 GSEventRun + 62
22 UIKit 0x341dc329 -[UIApplication _run] + 412
23 UIKit 0x341d9e93 UIApplicationMain + 670
24 50k 0x00002e2b main + 70
25 50k 0x00002de0 start + 40
)
terminate called after throwing an instance of 'NSException'

[stevenchan]

I fixed it myself (stevenchan/AQGridView@45bf836b6170cbd53227) by adding a catch block to catch the exception and everything seems fine. Thanks for the great code!