Xcode 不再识别对象

Question

我有一个名为朋友的对象（我知道，首字母应该大写）。我在许多其他 classes 和视图控制器中使用这个 class。

突然之间，在不更改任何代码的情况下，我拥有的每个自定义对象都不再相互识别。我总是收到错误 Unknown type name "friend".

我已经尝试清除项目并重新启动 mac。这个 Xcode WTF 错了吗？突然间我的整个项目都停止工作了。

这是我的classcurrentUser.h

#import <Foundation/Foundation.h>
#import "friend.h"

@interface currentUser : NSObject<NSCoding>
{
    BOOL fromfacebook;
    @private
    NSMutableArray *upLoadStack;

}

@property (nonatomic,strong)NSString *token;
@property (nonatomic,strong)NSString *email;
@property (nonatomic,strong)NSString *name;
@property (nonatomic,strong)UIImage *userImg;
@property (nonatomic,strong)NSString *username;
@property (nonatomic,strong)NSString *facebookID;
@property (nonatomic,strong)NSString *userPSW;
@property (nonatomic,strong)NSString *userID;
@property (nonatomic,strong)NSMutableArray *friendsList;
@property (nonatomic,strong)NSMutableArray *groups;
@property (nonatomic,strong)NSData *audioMessage;
@property (nonatomic,strong)NSMutableArray *mimosToDownload;
@property (nonatomic,strong)NSMutableArray *mimosDownloaded;
@property (nonatomic,strong)friend *friendToSend; //Here is where a I get the error of unknown type name


@end

这是friend.h

#import <Foundation/Foundation.h>
#import "currentUser.h"
#import "Imager.h"

@interface friend : NSObject<NSCoding>

@property (nonatomic,strong)NSString *username;
@property (nonatomic,strong)NSString *userID;
@property (nonatomic,strong)UIImage *userImg;
@property(nonatomic,strong)NSMutableData *buffer;

@property(nonatomic)BOOL flagDownloaded;
-(UIImage*)downloadImageBlocked;
-(id)init;
-(UIImage*)getFriendImg;
-(UIImage*)userImg;
-(NSString*)getUserID;
-(NSString*)getUserName;
- (void)encodeWithCoder:(NSCoder *)encoder;
-(bool)isNil;

@end

Answer 1

首先修复你知道有问题的地方...

改变

@interface currentUser : NSObject<NSCoding>
{
    BOOL fromfacebook;
    @private
    NSMutableArray *upLoadStack;

}

至

@interface User : NSObject<NSCoding>
{
    BOOL fromfacebook;
    @private
    NSMutableArray *upLoadStack;

}

你不需要知道用户是否是当前用户就可以拥有用户的属性，将它们视为实际代表 objects.

变化：

@interface friend : NSObject<NSCoding>

至

@interface Friend : NSObject<NSCoding>

你知道这是错误的，现在就修正它，然后再修正 1000 个地方而不是 100 个地方。

约定在Objective-C中非常重要。

如果不需要，也不要将所有内容导入 header...

@class Friend; //forward class declaration

@interface currentUser : NSObject<NSCoding>
...
@property (nonatomic,strong)Friend *friendToSend; //Here is where a I get the error of unknown type name

至于你在 currentUser 中的 ivar，你不需要界面中的那些（它们可以放在 @implimentation 行之后的一个块中），除非你需要它们来实现向后兼容性...

Xcode 不再识别对象

Xcode Don't recognize Object anymore

xcode

nsobject

ios