我的viewController.m中的prepareForSegue方法遇到了问题。
这是我的代码：
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if([[segue identifier] isEqualToString: @"moveSegue"])
{
SecondViewController *svc = (SecondViewController *)segue.destinationViewController;
svc.finalPercents = [NSNumber numberWithInt:roundf(percents)];
}
这是我为“SecondViewController ... segue.destinationViewController;”所带来的错误：
[2015-07-19 04:50:51.345 Click[3831:66529] -[__NSCFType set]: unrecognized selector sent to instance 0x7a06d880
2015-07-19 04:50:51.352 Click[3831:66529] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFType set]: unrecognized selector sent to instance 0x7a06d880'
*** First throw call stack:
(
0 CoreFoundation 0x00904746 __exceptionPreprocess + 182
1 libobjc.A.dylib 0x0058da97 objc_exception_throw + 44
2 CoreFoundation 0x0090c705 -[NSObject(NSObject) doesNotRecognizeSelector:] + 277
3 CoreFoundation 0x00853287 ___forwarding___ + 1047
4 CoreFoundation 0x00852e4e _CF_forwarding_prep_0 + 14
5 UIFoundation 0x03fc021f __NSStringDrawingEngine + 30451
6 UIFoundation 0x03fb8a0d -[NSString(NSExtendedStringDrawing) drawWithRect:options:attributes:context:] + 171
7 UIKit 0x010fcc78 -[UILabel _drawTextInRect:baselineCalculationOnly:] + 6649
8 UIKit 0x010fa93f -[UILabel drawTextInRect:] + 581
9 UIKit 0x010fcd7d -[UILabel drawRect:] + 98
10 UIKit 0x00f6a079 -[UIView(CALayerDelegate) drawLayer:inContext:] + 519
11 QuartzCore 0x04e9490b -[CALayer drawInContext:] + 118
12 QuartzCore 0x04e94841 _ZL16backing_callbackP9CGContextPv + 96
13 QuartzCore 0x04d757a2 CABackingStoreUpdate_ + 2788
14 QuartzCore 0x04e947d9 ___ZN2CA5Layer8display_Ev_block_invoke + 93
15 QuartzCore 0x04ecb0cc x_blame_allocations + 15
16 QuartzCore 0x04e94635 _ZN2CA5Layer8display_Ev + 1591
17 QuartzCore 0x04e94890 -[CALayer _display] + 33
18 QuartzCore 0x04e93ff6 _ZN2CA5Layer7displayEv + 142
19 QuartzCore 0x04e9486a -[CALayer display] + 33
20 QuartzCore 0x04e88700 _ZN2CA5Layer17display_if_neededEPNS_11TransactionE + 328
21 QuartzCore 0x04e88786 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 38
22 QuartzCore 0x04de4c22 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 284
23 QuartzCore 0x04de60b5 _ZN2CA11Transaction6commitEv + 487
24 QuartzCore 0x04de67cc _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 92
25 CoreFoundation 0x0082586e __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 30
26 CoreFoundation 0x008257b0 __CFRunLoopDoObservers + 400
27 CoreFoundation 0x0081b1ea __CFRunLoopRun + 1226
28 CoreFoundation 0x0081aa5b CFRunLoopRunSpecific + 443
29 CoreFoundation 0x0081a88b CFRunLoopRunInMode + 123
30 GraphicsServices 0x049b42c9 GSEventRunModal + 192
31 GraphicsServices 0x049b4106 GSEventRun + 104
32 UIKit 0x00ed70b6 UIApplicationMain + 1526
33 Click 0x000a92ea main + 138
34 libdyld.dylib 0x02e96ac9 start + 1
35 ??? 0x00000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
有关如何解决此问题的任何建议？感谢。