Xcode 4.6.3中的解析问题 - "预期的类型" - 找不到错误

Question

我有Xcode的问题:

目前我正在开发iOS SDK 6.1的应用程序.有一天,我正在实现一些方法,并试图编译该项目.然后发生了奇怪的事情

编译失败,我在两个文件中遇到了一些错误(见下图),这与我工作的方法无关.

我在我的代码中搜索错误但找不到任何错误.
然后我关闭了项目并再次打开它们:他们还在这里.
然后我关闭了项目和Xcode并重新打开了两个:他们还在这里.
然后我创建了一个新项目并复制了所有代码:问题又出现了.

现在我陷入困境,不知道该怎么办.我的代码中是否遗漏了一些内容？

请帮我!

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编辑1:

以下是一些代码片段,在我遵循Martin R的建议后应该显示我的代码:

//  PlayingCardDeck.h  
@class PlayingCard;  
@interface PlayingCardDeck : NSObject  
- (void) addCard: (PlayingCard *) card atTop: (BOOL) atTop;  
- (PlayingCard *) drawRandomCard;  
- (BOOL) containsCard: (PlayingCard *) card;  
- (BOOL) isCardUsed: (PlayingCard *) card;  
- (void) drawSpecificCard: (PlayingCard *) card;  
- (void) reset;  
@end  

---

//  PlayingCardDeck.m  
#import "PlayingCardDeck.h"  
@interface PlayingCardDeck()  

---

//  PlayingCard.h  
#import <Foundation/Foundation.h>  
#import "RobinsConstants.h"  
#import "PlayingCardDeck.h"  
//@class PlayingCardDeck;  
@interface PlayingCard :  NSObject  
+ (NSArray*) suitStrings;  
+ (NSArray*) rankStrings;  
+ (NSUInteger) maxRank;  
- (id)initCardWithRank: (NSUInteger) r andSuit: (NSString*) s;  
- (NSString*) description;  
- (NSUInteger) pokerEvalRankWithDeck: (PlayingCardDeck *) deck;  
- (NSAttributedString *) attributedContents;  
- (BOOL) isEqual:(PlayingCard*)object;  
@property (strong, nonatomic) NSString *contents;  
@property (nonatomic, getter = isUsed) BOOL used;  
@property (nonatomic, readonly) NSInteger rank;
@property (nonatomic, readonly, strong) NSString * suit;  
@end

---

//  PlayingCard.m  
#import "PlayingCard.h"  
@interface  PlayingCard()

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Answer 1

这看起来像一个典型的"进口周期":

 // In PlayingCardDeck.h:
 @import "PlayingCard.h"

 // In PlayingCard.h:
 @import "PlayingCardDeck.h"

替换其中一个@import语句@class应解决问题,例如

 // In PlayingCardDeck.h:
 @class PlayingCard; // instead of @import "PlayingCard.h"

在实现文件中,您必须导入完整的界面:

 // In PlayingCardDeck.m:
 #import "PlayingCardDeck.h"  
 #import "PlayingCard.h"    // <-- add this one