Question

I want to perform additional tasks whenever the image of a UIImageView is set. I’m attempting to define a custom setter method, but having no luck.

h:

@property (nonatomic, strong, setter = setImage:) UIImage *image;

m:

- (void)setImage:(UIImage *)image {
    self.image = image;
    // additional tasks here
}

This obviously incurs an infinite loop. How do I do this?

Answer 1

Instead of

    self.image = image;

do

    [super setImage:image];

Also, you don’t need to specify the setter since that is the default.