爲什麼不讓我的單身屬性自動完成？

Question

Anyidea爲什麼autocomplete在spaceScene屬性上不起作用？

#import <Foundation/Foundation.h> 
#import "cocos2d.h" 
@class SpaceScene; 


@interface SpaceSceneSingleton : NSObject 
{  
    SpaceScene *spaceScene; 


} 

@property (assign) SpaceScene *spaceScene; 


+(SpaceSceneSingleton*)sharedSpaceSceneSingleton; 
-(void) addChildToSceneWith:(CCNode *) node andWithZindex: (int) zIndex; 
-(void) runAction:(CCAction*) action; 
-(void) setTouchIsEnabled:(BOOL) isEnabled; 
-(void) removeChild: (CCNode *) child; 
@end 


#import "SpaceSceneSingleton.h" 


@implementation SpaceSceneSingleton 
@synthesize spaceScene; 

static SpaceSceneSingleton* _sharedSpaceSceneSingleton = nil; 

+(SpaceSceneSingleton*)sharedSpaceSceneSingleton; 
{ 
    @synchronized([SpaceSceneSingleton class]) 
    { 
     if (!_sharedSpaceSceneSingleton) 
      [[self alloc] init]; 

     return _sharedSpaceSceneSingleton; 
    } 

    return nil; 
} 



+(id)alloc 
{ 
    @synchronized([SpaceSceneSingleton class]) 
    { 
     NSAssert(_sharedSpaceSceneSingleton == nil, @"Attempted to allocate a second instance of a singleton."); 
     _sharedSpaceSceneSingleton = [super alloc]; 
     return _sharedSpaceSceneSingleton; 
    } 

    return nil; 
} 

-(id)init { 
    self = [super init]; 
    if (self != nil) { 
     // initialize stuff here 
    } 

    return self; 
} 

-(void) addChildToSceneWith:(CCNode *) node andWithZindex: (int) zIndex 
{ 
    [self.spaceScene addChild:node z:zIndex]; 

} 


-(void) runAction:(CCAction*) action 
{ 

//[self.spaceScene add 

} 

-(void) setTouchIsEnabled:(BOOL) isEnabled 
{ 

} 

-(void) removeChild: (CCNode *) child 
{ 
} 
@end 

Answer 1

你只申報@class SpaceScene;所以這個範圍內沒有什麼更比可能存在一個叫做SpaceScene類聞名。也許導入SpaceScene.h有幫助。

我甚至會說這應該編譯警告。可以？