This isnt asynchronous :(

[sankaet]

I am trying to use this in a uitableview and parsing the links from the web. but the problem is that this library is not Asynchronous. Any future plans to support that?

[mayoff]

If you need asynchronicity, call this category's methods from dispatch_async or an NSBlockOperation.

[sankaet]

mayoff, its not just that. I am using dispatch_async to cache all the image data first and then loading it into the Imageview, but still the scrolling stops for a second before it goes to the next cell. I hope I am making sense.

When I scroll down and the image is in the cache and is ready to load with postGif.image = [UIImage animatedImageWithAnimatedGIFData:imageData];

then the scrolling halts for a second before it scrolls down, can you please suggest a fix for it?

[mayoff]

Are you performing postGif.image = [UIImage animatedImageWithAnimatedGIFData:imageData]; on a background queue? You need to create the instance of UIImage off the main queue.

[sankaet]

mayoff, this is what I am doing

postGif = (UIImageView *)[cell viewWithTag:104];

if ([[ImageCache sharedImageCache] DoesExist:post[@"gif"]] == true)
{
    image = [[ImageCache sharedImageCache] GetImage:post[@"gif"]];

    postGif.image = [UIImage animatedImageWithAnimatedGIFData:image];

}else
{
    dispatch_queue_t backgroundQueue = dispatch_queue_create("cacheImage", 0);

    dispatch_async(backgroundQueue, ^{

        NSData *imageData = [[NSData alloc] initWithContentsOfURL: [NSURL URLWithString:post[@"gif"]]];
        dispatch_async(dispatch_get_main_queue(), ^{

            // Add the image to the cache
            [[ImageCache sharedImageCache] AddImage:post[@"gif"] image:imageData];

            NSIndexPath* ind = [NSIndexPath indexPathForRow:0 inSection:indexPath.section];
            [self.feedTableView beginUpdates];
            [self.feedTableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:ind] withRowAnimation:UITableViewRowAnimationNone];
            [self.feedTableView endUpdates];
        });
    });
}

postGif.layer.cornerRadius = 2.0;
postGif.layer.masksToBounds = YES;

[cell.contentView addSubview:postGif];

[mayoff]

So, in other words, no. You are not doing what I just said you need to do: you need to create the instance of UIImage on a background queue.

[sankaet]

mayoff I tried background queue as well. but the Image load is really slow with it. Am I doing something wrong in this?

if ([[ImageCache sharedImageCache] DoesExist:post[@"gif"]] == true)
{
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,
                                             (unsigned long)NULL), ^(void) {
        NSData *image = [[ImageCache sharedImageCache] GetImage:post[@"gif"]];

        postGif.image = [UIImage animatedImageWithAnimatedGIFData:image];
    });

}else
{
    dispatch_queue_t backgroundQueue = dispatch_queue_create("cacheImage", 0);

    dispatch_async(backgroundQueue, ^{

        NSData *imageData = [[NSData alloc] initWithContentsOfURL: [NSURL URLWithString:post[@"gif"]]];
        dispatch_async(dispatch_get_main_queue(), ^{

            // Add the image to the cache
            [[ImageCache sharedImageCache] AddImage:post[@"gif"] image:imageData];

            NSIndexPath* ind = [NSIndexPath indexPathForRow:0 inSection:indexPath.section];
            [self.feedTableView beginUpdates];
            [self.feedTableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:ind] withRowAnimation:UITableViewRowAnimationNone];
            [self.feedTableView endUpdates];
        });
    });
}

[mayoff]

You should not modify properties of user interface objects (like a UIImageView) from a background queue. If you need more help, please go to http://stackoverflow.com and post your question there.

[sankaet]

mayoff, I posted a question here

http://stackoverflow.com/questions/16313585/uiimageview-scrolling-halts-for-a-second

I am sorry for bothering you again. I am just not grasping a concept I guess and thats putting me to a halt. I really appreciate your help!