Re: [iPhone] Caching images fetched from a URL?
Re: [iPhone] Caching images fetched from a URL?
- Subject: Re: [iPhone] Caching images fetched from a URL?
- From: "Eric E. Dolecki" <email@hidden>
- Date: Wed, 13 May 2009 09:23:15 -0400
Thank you everyone!!!! I have this working (locally in memory anyway)... I
had to tweak the method a little bit...
- (UIImage*)imageNamed:(NSString*)imageNamed cache:(BOOL)cache
{
UIImage* retImage = [staticImageDictionary objectForKey:imageNamed];
if (retImage == nil)
{
// Since my images are not local, fetch externally
//retImage = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle]
pathForResource:imageNamed ofType:nil]];
retImage = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL
URLWithString:imageNamed]]];
if (cache)
{
if (staticImageDictionary == nil)
staticImageDictionary = [NSMutableDictionary new];
[staticImageDictionary setObject:retImage forKey:imageNamed];
}
}
return retImage;
}
And how I am calling it:
UIImage *ret = [self imageNamed:tmp cache:YES];
holder.image = ret;
Seems like it's working pretty well. Although there will always be some
initial stutter on long lists in the table, at least once you've used it a
little things smooth out. If I need to, I'll just use the file system or a
db. Thanks for all of the help here, I really appreciate it!
Eric
On Wed, May 13, 2009 at 12:58 AM, Michael Vannorsdel <email@hidden>wrote:
> The UIImage is the object (inherits from NSObject), so yes you'd pass the
> pointer to it as the dict's object. And objectForKey: will pass back that
> pointer to the UIImage again.
>
>
> On May 12, 2009, at 10:00 PM, Eric E. Dolecki wrote:
>
> I like the cache without writing to the disk (for now anyway).
>>
>> When you say the image object itself, I don't know exactly what you
>> mean...
>> if it's just a pointer to UIImage then I think I do know. So I could pair
>> the pointer with the URL key, is that right?
>>
>
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http://ericd.net
Interactive design and development
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