我正在处理表格视图并在表格行中添加一些标签。并绑定他们的价值观。
但即使在正确执行完整的tableview数据源代码之后，我的应用程序突然崩溃了。
它出现以下错误。
请帮我解决此问题
-[__NSCFNumber length]: unrecognized selector sent to instance 0xb000000000000023
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFNumber length]: unrecognized selector sent to instance 0xb000000000000023'
*** First throw call stack:
(
0 CoreFoundation 0x0000000105003495 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x0000000104d5799e objc_exception_throw + 43
2 CoreFoundation 0x000000010509465d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x0000000104ff4d8d ___forwarding___ + 973
4 CoreFoundation 0x0000000104ff4938 _CF_forwarding_prep_0 + 120
5 UIKit 0x0000000103a817c5 -[UILabel _shadow] + 34
6 UIKit 0x0000000103a829fd -[UILabel drawTextInRect:] + 81
7 UIKit 0x0000000103a84ab2 -[UILabel drawRect:] + 100
8 UIKit 0x00000001039604bd -[UIView(CALayerDelegate) drawLayer:inContext:] + 474
9 QuartzCore 0x000000010537d368 -[CALayer drawInContext:] + 116
10 QuartzCore 0x0000000105281843 CABackingStoreUpdate_ + 2641
11 QuartzCore 0x000000010537d274 ___ZN2CA5Layer8display_Ev_block_invoke + 59
12 QuartzCore 0x000000010537d113 _ZN2CA5Layer8display_Ev + 1461
13 QuartzCore 0x0000000105372173 _ZN2CA5Layer17display_if_neededEPNS_11TransactionE + 319
14 QuartzCore 0x00000001053721f5 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 35
15 QuartzCore 0x00000001052e5fb8 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 252
16 QuartzCore 0x00000001052e7030 _ZN2CA11Transaction6commitEv + 394
17 QuartzCore 0x00000001052e769d _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 89
18 CoreFoundation 0x0000000104fcedc7 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
19 CoreFoundation 0x0000000104fced37 __CFRunLoopDoObservers + 391
20 CoreFoundation 0x0000000104fae522 __CFRunLoopRun + 946
21 CoreFoundation 0x0000000104fadd83 CFRunLoopRunSpecific + 467
22 GraphicsServices 0x00000001073a1f04 GSEventRunModal + 161
23 UIKit 0x0000000103900e33 UIApplicationMain + 1010
24 CW4Members 0x0000000102ed6023 main + 115
25 libdyld.dylib 0x0000000105ed65c9 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
答案 0 :(得分：0)
你的一个价值是NSNumber类型＆amp;你将它分配给标签，标签将其作为NSString。你可以通过
分配它cell.label.text = [value stringValue];
或
cell.Label.text = [NSString stringWithFormat:@"%@",value];