Re: Remove alpha channel from uiimage
Re: Remove alpha channel from uiimage
- Subject: Re: Remove alpha channel from uiimage
- From: David Duncan <email@hidden>
- Date: Tue, 28 Jan 2014 13:10:43 -0800
On Jan 28, 2014, at 12:37 PM, Peng Gu <email@hidden> wrote:
> kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Little
You just asked Core Graphics to make a context with alpha, and thus an image with alpha. Core Animation doesn’t enumerate all the pixels of the image to determine if there is alpha, it just looks at the image flags.
If you don’t want alpha, use kCGImageAlphaNoneSkipFirst instead.
--
David Duncan
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