How to make AFNetworking set a default image when the download fails?

Question

I want to do the following:

1. When the image is loading => Must display a spinner or another image indicating loading;
2. When the image is loaded => Must display the image;
3. When the image fails => Must display a static "no image available" image.

I tried:

- (void)setImageWithURL:(NSURL *)url
   placeholderImage:(UIImage *)placeholderImage

But I couldn't figure out how to handle the failure event.

Answer 1

Why don't you use

setImageWithURLRequest:placeholderImage:success:failure:

From the doc

And set the wanted placeholder image in the fail block?

Example:

NSURLRequest * aURLRequest = [[NSURLRequest alloc] initWithURL:[[NSURL alloc] initWithString: @"A-URL"]];
UIImageView * img = [[UIImageView alloc] init];
__weak UIImageView* weakImg = img;
[img setImageWithURLRequest:aURLRequest
           placeholderImage:nil
                    success:^(NSURLRequest *request, NSHTTPURLResponse *response, UIImage *image) {
                        //default
                    }
                    failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error) {
                        weakImg.image = [UIImage imageNamed:@"fallbackImage"];
                    }];