Bug 34347 - iOS ToCGColor() extension method converts White to Transparent
Summary: iOS ToCGColor() extension method converts White to Transparent
Alias: None
Product: Forms
Classification: Xamarin
Component: Forms ()
Version: 1.4.3
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2015-09-28 12:13 UTC by aer127
Modified: 2015-09-30 15:22 UTC (History)
4 users (show)

Is this bug a regression?: ---
Last known good build:

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Description aer127 2015-09-28 12:13:52 UTC
In Xamarin.Forms, there is an extension method to convert a Xamarin.Forms.Color to a CoreGraphics.CGColor. The name of this extension method is ToCGColor(). If the color (255,255,255,255) white is passed into this extension method, the extension method actually returns transparent instead of white. For instance,

Xamarin.Forms.Color color = new Xamarin.Forms.Color(255,255,255,255);
CoreGraphics.CGColor cgColor = color.ToCGColor();  <------ this returns a color with the alpha channel = 0

However, if you use the static Xamarin.Forms.Color.White property, the correct value is returned.

CoreGraphics.CGColor test = Xamarin.Forms.Color.White.ToCGColor(); <-----actually returns white, not transparent
Comment 1 Paul DiPietro [MSFT] 2015-09-30 12:56:28 UTC
Could you provide a reproduction example displaying the issue? At the moment I am not able to reproduce this issue using Forms
Comment 2 aer127 2015-09-30 15:22:33 UTC
I am closing this issue. After further testing, we determined the error was in our code.