这是错误:
2013-09-30 17:59:23.212 The Solver[422:a0b] -[WelcomeUI _setViewDelegate:]: unrecognized selector sent to instance 0xc061110
2013-09-30 17:59:23.222 The Solver[422:a0b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[WelcomeUI _setViewDelegate:]: unrecognized selector sent to instance 0xc061110'
*** First throw call stack:
(
0 CoreFoundation 0x023605e4 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x014be8b6 objc_exception_throw + 44
2 CoreFoundation 0x023fd903 -[NSObject(NSObject) doesNotRecognizeSelector:] + 275
3 CoreFoundation 0x0235090b ___forwarding___ + 1019
4 CoreFoundation 0x023504ee _CF_forwarding_prep_0 + 14
5 UIKit 0x0013d55c +[UIViewController setViewController:forView:] + 40
6 UIKit …