沒有已知課程 - iOS

Question

您能否看看我的代碼並告訴我爲什麼我做錯了？

我得到一個錯誤"No known class for selector method "imageWithImage: (UIImage)image...."

- (void)myMethod { 

    UIImage *iconImage=[UIImage imageNamed:@"male_small_0.png"]; 
    // I am having problem in the following line 
    UIImage *iconImage2=[UIImage imageWithImage:iconImage scaledToSize:CGSizeMake(73.0, 73.0)]; 
} 

-(UIImage*)imageWithImage:(UIImage*)image scaledToSize:(CGSize)newSize 
{ 
    UIGraphicsBeginImageContextWithOptions(newSize, NO, 0.0); 
    [image drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)]; 
    UIImage *newImage =UIGraphicsGetImageFromCurrentImageContext(); 
    UIGraphicsEndImageContext(); 
    return newImage; 

} 

Answer 1

應該[self imageWithImage:...]不[UIImage imageWithImage...]。後者意味着該方法是UIImage的類方法，但它似乎是包含myMethod的類的實例方法。