Re: [iPhone] custom CALayer drawing
Re: [iPhone] custom CALayer drawing
- Subject: Re: [iPhone] custom CALayer drawing
- From: David Duncan <email@hidden>
- Date: Thu, 11 Feb 2010 16:47:04 -0800
On Feb 11, 2010, at 3:44 PM, PCWiz wrote:
> I'm trying to do some custom drawing in a CALayer subclass by overriding the drawInContext: method, but it appears that its not being called. In my subclass I just have this:
>
> However, the drawInContext method is never called. What am I doing wrong here?
Layers (unlike views) start life validated. You need to call the layer's -setNeedsDisplay method for your -drawInContext: method to be called, so you should add a [lines setNeedsDisplay] call at some point.
--
David Duncan
Apple DTS Animation and Printing
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