On Thu, 3 Feb 2011 12:06:25 -0800, Rick Mann <[email protected]> said: >I'm doing a photo browser of sorts, as part of a larger app. We display a few >thumbnails, and if the user taps one, they're presented with the full-size >image. > >The problem is that I start with the large images, and when I set them on the >small UIImageView, they're scaled down and look pretty bad. I have access to a >better thumbnail-size version of the image, but that complicates the code to >display them. > >I don't see any way of changing the decimation algorithm on UIImageView or >UIImage, but I did find the minificationFilter on CALayer. Changing that >setting on the UIImageView had no effect. I also tried different >minificationFilterBias values, to no effect.
I don't know the answer to your question, but my feeling is that you shouldn't "show the large image on a small UIImageView": you should obtain a scaled image and show that. My understanding is that even if the image view is small, it must maintain the image you give it. Maintaining the memory for several large images can make your app less responsive or even kill it. If I'm wrong someone will correct me, but that's the impression I got from at least two different WWDC 2010 videos. I haven't used the minification filter, but I'm not surprised that changing it had no effect, since this is a layer property, and you are not shrinking the layer. My impulse, therefore, is to say: don't be lazy, use a thumbnail-size version of the image, even if that "complicates the code". m. -- matt neuburg, phd = [email protected], <http://www.apeth.net/matt/> A fool + a tool + an autorelease pool = cool! AppleScript: the Definitive Guide - Second Edition! http://www.apeth.net/matt/default.html#applescriptthings_______________________________________________ Cocoa-dev mailing list ([email protected]) 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 [email protected]
