错误:预期；在声明列表的末尾-类未被识别为类型

问题描述

这是我的viewcontroller.h文件:

Here is my viewcontroller.h file:

#import <UIKit/UIKit.h>
#import <CoreData/CoreData.h>
#import <CoreLocation/CoreLocation.h>
#import <AVFoundation/AVFoundation.h>
#import <CoreMedia/CoreMedia.h>
#import <ImageIO/ImageIO.h>
#import <CoreVideo/CoreVideo.h>


@interface ViewController : UIViewController <UINavigationControllerDelegate,  CLLocationManagerDelegate>

@property (nonatomic, strong) NSManagedObjectContext *managedObjectContext;
@property(nonatomic, weak) IBOutlet UIImageView *selectedImageView;
@property(nonatomic, retain) IBOutlet UIImageView *vImage;
@property(nonatomic, retain) AVCaptureStillImageOutput *stillImageOutput;

- (IBAction)photoFromAlbum;
- (IBAction)photoFromCamera;
- (IBAction)saveImageToAlbum;
- (IBAction)segueToChoosePhotoTypeViewController;

@end

该行:

@property(nonatomic, retain) AVCaptureStillImageOutput *stillImageOutput;

正在产生以下问题:

Expected ; at end of declaration list.

Xcode无法将AVCaptureStillImageOutput识别为类，因为它保持黑色并且不建议将其作为类型，并且"Fix-it"希望在AVCaptureStillImageOutput之后插入;.

Xcode isn't recognizing AVCaptureStillImageOutput as a class as it remains black and doesn't suggest it as a type, and the "Fix-it" wants to insert the ; right after AVCaptureStillImageOutput.

但是，如果我尝试在我的viewController.m文件的viewDidLoad中使用声明AVCaptureStillImageOutput作为类型，它会识别它并将其允许为类型.此外，其余的AVFoundation类也可以在该代码中识别.

However, if I try to use declare AVCaptureStillImageOutput as a type in viewDidLoad of my viewController.m file, it recognizes it and allows it as a type. Also, the rest of the AVFoundation classes are being recognized in the code there.

框架在那里，我只是与此@property声明有关的问题.

The framework is there, I'm just having an issue with this @property declaration.

推荐答案

在您的行中

@property(nonatomic, retain) AVCaptureStillImageOutput *stillImageOutput;

在AVCaptureStillImageOutput和*stillImageOutput之间有一些不可见字符.如果将此行粘贴到vi编辑器中，它看起来像这样:

you have some invisible characters between AVCaptureStillImageOutput and *stillImageOutput. If I paste this line into the vi editor, it looks like this:

@property(nonatomic, retain) AVCaptureStillImageOutput<feff><feff><feff><feff><feff> *stillImageOutput;

(U + FEFF是Unicode字节序标记，即使激活了显示不可见"，它也看起来像Xcode中的普通空格.)

(U+FEFF is a Unicode Byteorder marker, and it looks like a normal space in Xcode, even if "Show Invisibles" is activated).

删除并重新插入空格可解决此问题.

Deleting and re-inserting the space fixes the problem.

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