没有已知的类 - iOS

Question

请您查看我的代码并告诉我为什么我做错了？

我收到错误"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

应该{​​{1}}而不是[self imageWithImage:...]。后者意味着该方法是[UIImage imageWithImage...]的类方法，但它似乎是包含UIImage的类的实例方法。