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?
E. On Tue, May 12, 2009 at 5:19 PM, Eric Hermanson <zmons...@mac.com> wrote: > Obviously, if you want to cache the images between runs of the application, > you need to cache them as binary onto the disk. If you are OK with the > images being loaded after every launch of the application, you can cache > them into an NSMutableDictionary with the URL as the key, and the image > object itself as the object (no need to convert it into binary if you're > just going to store it in a dictionary). Just ask the dictionary for it's > "objectForKey" by passing the URL. It will return 'nil' if it hasn't been > cached yet (in which case you need to fetch the image and cache it). This > is generally how all caches work. > > - Eric > > > On May 12, 2009, at 5:13 PM, Eric E. Dolecki wrote: > > Okay, so I know I can somehow cache them... but I have some noob >> questions. >> - how do I cache the images themselves? Some binary data object written to >> the disk? How? >> - how do I check if the image has already been loaded (check an >> NSMutableArray populated with dictionaries with a url string and url key?) >> - if I find that the image has been cached (somehow), how do I use that >> image instead? >> >> On Tue, May 12, 2009 at 5:09 PM, Dave DeLong <davedel...@me.com> wrote: >> >> Yes, if you cache them yourself. >>> >>> Dave >>> >>> On Tuesday, May 12, 2009, at 03:04PM, "Eric E. Dolecki" < >>> edole...@gmail.com> wrote: >>> >>>> In my table, when a cell isn't nil I am setting UILabels, etc. However, >>>> in >>>> each cell I have a UIImageView... and the contents of each is an image >>>> fetched from my server. No problem on initial display, but as soon as >>>> you >>>> start scrolling and the cells are reused, I am fetching new artwork... >>>> >>> which >>> >>>> makes the scrolling chug along. >>>> Is there a way to cache these images, and if it was previously loaded to >>>> >>> use >>> >>>> that instead of loading from the url again? >>>> >>>> Thanks, >>>> Eric >>>> >>> >>> >> >> >> -- >> http://ericd.net >> Interactive design and development >> _______________________________________________ >> >> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) >> >> Please do not post admin requests or moderator comments to the list. >> Contact the moderators at cocoa-dev-admins(at)lists.apple.com >> >> Help/Unsubscribe/Update your Subscription: >> http://lists.apple.com/mailman/options/cocoa-dev/zmonster%40mac.com >> >> This email sent to zmons...@mac.com >> > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/edolecki%40gmail.com > > This email sent to edole...@gmail.com > -- http://ericd.net Interactive design and development _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
