ios - 没有已知的类- iOS

Question

你能看看我的代码并告诉我为什么我做错了吗？

我收到一个错误 “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

它应该是 [self imageWithImage:...] 而不是 [UIImage imageWithImage...]。后者暗示该方法是 UIImage 的类方法，但它似乎是包含 myMethod 的类的实例方法。