iOS UNdo ReDo blowing up.

[IDMah]

I had the undo redo working fine.. or so I though.

I killed a bug that was undoing something not done yet .. stupid mistake on my part.

but now I keep crashing .. with this..

-[NSSubstringPredicateOperator set]: unrecognized selector sent to instance 0x4e385f0
2011-12-18 18:38:00.931 FooChallenge[4244:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSSubstringPredicateOperator set]: unrecognized selector sent to instance 0x4e385f0'
*** Call stack at first throw:
(
	0   CoreFoundation                      0x00dc1be9 __exceptionPreprocess + 185
	1   libobjc.A.dylib                     0x00f165c2 objc_exception_throw + 47
	2   CoreFoundation                      0x00dc36fb -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
	3   CoreFoundation                      0x00d33366 ___forwarding___ + 966
	4   CoreFoundation                      0x00d32f22 _CF_forwarding_prep_0 + 50
	5   UIKit                               0x003eb6fa -[UILabel _drawTextInRect:baselineCalculationOnly:] + 2219
	6   UIKit                               0x003e8b40 -[UILabel drawTextInRect:] + 70
	7   UIKit                               0x003026eb -[UIView(CALayerDelegate) drawLayer:inContext:] + 426
	8   QuartzCore                          0x01c879e9 -[CALayer drawInContext:] + 143
	9   QuartzCore                          0x01c85f03 -[CALayer _display] + 524
	10  QuartzCore                          0x01c85be4 CALayerDisplayIfNeeded + 231
	11  QuartzCore                          0x01c7838b _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 325
	12  QuartzCore                          0x01c780d0 _ZN2CA11Transaction6commitEv + 292
	13  QuartzCore                          0x01ca87d5 _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 99
	14  CoreFoundation                      0x00da2fbb __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 27
	15  CoreFoundation                      0x00d380e7 __CFRunLoopDoObservers + 295
	16  CoreFoundation                      0x00d00bd7 __CFRunLoopRun + 1575
	17  CoreFoundation                      0x00d00240 CFRunLoopRunSpecific + 208
	18  CoreFoundation                      0x00d00161 CFRunLoopRunInMode + 97
	19  GraphicsServices                    0x016f6268 GSEventRunModal + 217
	20  GraphicsServices                    0x016f632d GSEventRun + 115
	21  UIKit                               0x002d942e UIApplicationMain + 1160
	22  FooChallenge                   0x00002644 main + 102
	23  FooChallenge                   0x000025d5 start + 53

Any hints on what is causing this, would be greatly appreciated.
thanks
Ian

 

[ArtOfWarfare]

More helpful than your crash logs might be your source code related to the crash.

 

[IDMah]

totally unrelated but at fault.

Turns out that I was using..

UIColor *fooColourSet;
fooColourSet = [UIColor colorWithRed:.6 green:0 blue:0 alpha:1];

when I sub:

fooColourSet = [UIColor redColor];

it works fine.. not a problem with undo after all I guess I should look
I thought I could just slap that in for redColor.. guess I was wrong..
Any Ideas??


thanks
Ian


ps. Yeap forgot to retain the colour. like this..

[[UIColor alloc] initWithRed:0.5f green:0.5f blue:0.5f alpha:1.0f];