错误： [UILabel copyWithZone:]: unrecognized selector sent to instance

12 down vote accepted

I guess this was one of those weird bugs with XCode that you can't trace or reproduce every time. I narrowed the issue down to one specific UILabel in the IB. As soon as I connect to to a UIOutlet UILabel *, I get this error. On further investigation, it turns out that name title was causing the issue. I had the label declared as IBOutlet UILabel *title; As soon as change the name to gtitle, everything works as expected. Who knows?.. share | improve this answer edited  May 30 at 9:34 answered  May 28 at 12:42 Aleks G 12.8k 3 12 38

Yes, using title as a name for an IBOutlet variable cause big troubles! Thanks for this.... –  tomsoft  Jul 10 at 17:46   Just my problem, using title. The thing is, in another file I use title too, but all just fine. –  Orlando Leite  Aug 2 at 20:53   same problem here XD changing it to MainTitle worked –  WolfLink  Oct 27 at 6:17   This was killing me... thank you! In hindsight, definitely a poor choice for the ivar, but it wasn't critical so I named it by default. Super poor error message from Xcode –  MobileVet  Nov 12 at 20:21 Was this post useful to you?