Re: Little suggestion for many many images app, best approach.
Re: Little suggestion for many many images app, best approach.
- Subject: Re: Little suggestion for many many images app, best approach.
- From: Matt Neuburg <email@hidden>
- Date: Sat, 20 Nov 2010 09:44:42 -0800
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.
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