Re: Appropriate -setWantsLayer: timing
Re: Appropriate -setWantsLayer: timing
- Subject: Re: Appropriate -setWantsLayer: timing
- From: Simon Wolf <email@hidden>
- Date: Fri, 19 Feb 2010 22:17:39 +0000
On 19 Feb 2010, at 03:50, Scott Anguish wrote:
>
> On Feb 16, 2010, at 5:45 PM, Simon Wolf wrote:
>
>>>
>>> I'm wondering when writing a layer hosting view, when the most appropriate time is to set the layer and call -setWantsLayer:YES?
>>>
>>> Calling it in -initWithFrame: is too early and the view fails to 'draw'.
>
>>
>> In addition to David's reply, a small tip is that you can also get things working if you call setWantsLayer: and then follow it by assigning a layer:
>>
>> [self setWantsLayer:YES];
>> [self setLayer:[CALayer layer]];
>>
>> Otherwise the layer is added at some undetermined future point which may not (in my experience ever) be in the current run loop.
>>
>
> This is incorrect.
>
> If you want a layer-hosting view (rather than a layer-backed view) you must do this in the reverse order. setLayer: and then setWantsLayer:
Ah, that may explain some of the problems I was having!
Thanks Scott.
Simon Wolf
Website: http://www.ottersoftware.com
Twitter: http://www.twitter.com/sgaw
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