메서드 호출시 보이지 않는 인터페이스

Question

다음과 같은 호출 방법이 있지만 인터페이스 오류가 표시되지 않습니다.

// My Header 
#import <UIKit/UIKit.h> 

@interface SectionViewController : UIViewController<UIScrollViewDelegate,UIGestureRecognizerDelegate> 

@property (strong, nonatomic) IBOutlet UIImageView *imvPhoto; 
+(UIImage*) drawImage:(UIImage*) fgImage 
       inImage:(UIImage*) bgImage 
       atPoint:(CGPoint) point; 

@end 

// Implementation 
+(UIImage*) drawImage:(UIImage*) fgImage 
       inImage:(UIImage*) bgImage 
       atPoint:(CGPoint) point 
{ 
    UIGraphicsBeginImageContextWithOptions(bgImage.size, FALSE, 0.0); 
    [bgImage drawInRect:CGRectMake(0, 0, bgImage.size.width, bgImage.size.height)]; 
    [fgImage drawInRect:CGRectMake(point.x, point.y, fgImage.size.width, fgImage.size.height)]; 
    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); 
    UIGraphicsEndImageContext(); 

    return newImage; 
} 

Answer 1

좋아, 문제

에

+(UIImage*) drawImage:(UIImage*) fgImage 
       inImage:(UIImage*) bgImage 
       atPoint:(CGPoint) point 

에서

변화로 고정했다

-(UIImage*) drawImage:(UIImage*) fgImage 
       inImage:(UIImage*) bgImage 
       atPoint:(CGPoint) point 

Answer 2

귀하의 구문이 잘못되었습니다. 너는 [그리고] 빠져있다.

사용 :

imvPhoto.image = [YourClassName drawImage:imvPhoto.image inImage:anno.image atPoint:point]; 

대신 :

imvPhoto.image = drawImage:imvPhoto.image inImage:anno.image atPoint:point;