iOS: Simple image loading method

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{

        

        NSURL *url = [NSURL URLWithString:<image_url>];

        NSData *data = [NSData dataWithContentsOfURL:url];

        UIImage *img = [[UIImage alloc] initWithData:data];

        

        dispatch_async(dispatch_get_main_queue(), ^{

            [self.imageView setImage:img];

        });

    });