Doesn't load picture from valid URL

Question

UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:imageURL]]];

I use the code above and then check

if (image)
    return image;
else
{
    NSLog(@"no image on URL");
    return nil;
}

But sometimes (very very seldom) I don't get an image from a valid url. The url is valid 100%.

Usually it takes nearly one second to load a picture, but when it can't load a picture the process takes much more time (20-200 seconds). And then i get "no image on URL".

Is there a better way to get a picture from URL? I'd rather get "no image on URL" in one second then waiting so long.

P.S. srry for my poor english

score 1 · Accepted Answer · answered May 10 '12 at 05:27

It is very rare that you want to use dataWithContentsOfURL:. It's a blocking call so requires a background thread. It's also inflexible and doesn't provide good error returns (which is the problem you're encountering).

See the URL Loading System Programming Guide. Generally you'll want to configure an asynchronous NSURLConnection for this kind of work. If you're doing a lot of network operations, you may want to consider a framework like MKNetworkKit or AFNetworking which handle a lot of the complexities for you.

Doesn't load picture from valid URL

1 Answers1