On Nov 20, 2010, at 7:48 AM, Gustavo Pizano wrote: > Matt hi. > > Thanks for the reply.. > > I follow your suggestion and see hoe the app behaves using UIViews only... if > it doesn't behave as expected then I will use CALayers instead... I just need > to reread about them because I know that one case of CALayer doesn't call > its draw methods
I'm not sure what you mean, but in general (1) a view on iOS *is* a layer - I've heard it said that a view is merely a layer plus touchability - and (2) layers (and therefore views) do not redraw unless they have to, which usually means, because you tell them to. If a layer isn't redrawing when you need it to redraw, that's because you didn't tell it that you needed it to redraw. > I guess you mean using the hitTest: method on the main view's CALayer Right; the purpose of this method is to let you simulate touchability for a sublayer. But, as I said before, you won't do this unless performance forces you to do it; if you need all those pictures to be touchable, it's going to be a lot easier if they are all views. m. -- matt neuburg, phd = m...@tidbits.com, http://www.tidbits.com/matt/ pantes anthropoi tou eidenai oregontai phusei Among the 2007 MacTech Top 25, http://tinyurl.com/2rh4pf AppleScript: the Definitive Guide, 2nd edition http://www.tidbits.com/matt/default.html#applescriptthings Take Control of Exploring & Customizing Snow Leopard http://tinyurl.com/kufyy8 RubyFrontier! http://www.apeth.com/RubyFrontierDocs/default.html TidBITS, Mac news and reviews since 1990, http://www.tidbits.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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
