Objective-C에서 Singleton 객체를 만드는방법은 다음과 같습니다. // SingletonClass.h #import! @interface SingletonClass : NSObject { } + (SingletonClass *)sharedSingletonClass; @end // SingletonClass.m #import! "SingletonClass.h" @implementation SingletonClass + (SingletonClass *)sharedSingletonClass { static SingletonClass *singletonClass = nil; if(singletonClass == nil) { @synchronized(self) { if(singletonClass =..