Lazy loading UITableView with multiple images in each cell

Question

I am using lazy loading to show images on a table view. But I need to create a tableview with multiple images in every cell.Which can be scrolled. All images are loaded from server only How can I create this without any lagging for table scrolling ? Is there any tutorial available for this

Create the needed UIImageView's for your cell and use https://github.com/rs/SDWebImage for async downloading of images. — Praveen S, Jun 12 '13 at 10:52

score 2 · Answer 1 · edited Jun 20 '20 at 09:12

2

Try this code. SDWebImage. It downloads image from server and save it to device cache. Also if you don't want save it to cache then you might have a look at AFNetworking.

edited Jun 20 '20 at 09:12

Community

1
1

answered Jun 12 '13 at 11:00

Divyu

1,325
9
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There is an option available NSURLCacheStorageNotAllowed in AFNetworking. Check that. – Divyu Jun 12 '13 at 11:09
your ans explicitly implies AFNetworking does not use cacheing..which i pointed out as far as checking out is concerned i have done many tweaks in it to disable and enable caching to show updated images etc.. – amar Jun 12 '13 at 11:11

score 2 · Answer 2 · answered Jun 17 '13 at 18:42

There is another option. Using GCD (Grand Central Dispatch).

Example Code :

// Get the filename to load.
    NSString *imageFilename = [imageArray objectAtIndex:[indexPath row]];
    NSString *imagePath = [imageFolder stringByAppendingPathComponent:imageFilename];

    [[cell textLabel] setText:imageFilename];

    dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0ul);

    dispatch_async(queue, ^{
        UIImage *image = [UIImage imageWithContentsOfFile:imagePath];

        dispatch_sync(dispatch_get_main_queue(), ^{
            [[cell imageView] setImage:image];
            [cell setNeedsLayout];
        });
    });

Use the same for showing multiple images. Using this will increase the performance of loading tableview definitely.

Refer this to know more about GCD

Better than SDWebImage. No weird fit when loaded image doesn't have the same aspect ratio with the placeholder. 0 dependencies. And I don't really need caching, I just need a solution that doesn't lock up the app while images are loading. Thanks! — marko, Oct 11 '14 at 19:11

score 0 · Answer 3 · answered Jun 12 '13 at 11:33

0

Try this https://github.com/nicklockwood/AsyncImageView .Easy to download images asyncronously from server.

answered Jun 12 '13 at 11:33

user133

88
6

Lazy loading UITableView with multiple images in each cell

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