Match color between UIView and CALayer(CGColor)

Question

I have an UIView (inside a LaunchScreen, so not many options customizing it), for which I've specified a backgroundColor through IB. The first VC that comes up after the app launches has a CALayer that should be identical to the LaunchScreen... except it isn't.

I know there is some color correction applied, but I can't seem to find the relevant documentation to understand the process. I would assume I need to specify the correct color space when creating the CGColor that's used as a background for the CALayer.

You are applying color to the LaunchScreen using Interface Builder, right? — kelin, Aug 24 '17 at 09:12

Baig · Answer 1 · 2017-08-24T09:19:12.073

0

You can set color for CALayer

layer.backgroundColor = [[UIColor greenColor] CGColor]; //obj c
layer.backgroundColor = UIColor.greenColor.cgColor //swift

It will set the same greenColor you applied to launch screen.

If your setting RGB value in interface, take care for selecting right RGB profile,

edited Aug 24 '17 at 09:19

answered Aug 24 '17 at 09:09

Baig

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That’s what I did... turns out it’s not the same. – CatalinM Aug 24 '17 at 09:10
check your launch screen interface, may you have applied alpha – Baig Aug 24 '17 at 09:11
Alpha is 1 everywhere, that’s not an issue – CatalinM Aug 24 '17 at 09:13
Apply colors to LaunchScreen using Generic RGB profile [guide](https://stackoverflow.com/a/33557303/1556386) – Baig Aug 24 '17 at 09:16

Match color between UIView and CALayer(CGColor)

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