Re: Appropriate -setWantsLayer: timing
Re: Appropriate -setWantsLayer: timing
- Subject: Re: Appropriate -setWantsLayer: timing
- From: Scott Anguish <email@hidden>
- Date: Thu, 18 Feb 2010 22:50:46 -0500
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:
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