UII нужна копия, самоконтроль или self.view, я пробовал:
UIView* viewOfSelf =[self.view copy];
UIViewController* controller = [self copy];
UIView* viewOfSelf =[self.view mutableCopy];
UIViewController* controller = [self mutableCopy];
Ошибка:
-[UIViewController mutableCopyWithZone:]: unrecognized selector sent to instance 0xb803490
-[UIView copyWithZone:]: unrecognized selector sent to instance 0x6e0acb0