Static Color methods not converting values e.g Color.FromRgba

[Akinnagbe]

Description

using static Color methods does not work for other forms of colors apart from the primary colors. E.g. Color.FromRgba both in C# and using FactoryMethod in xaml does not display the color on the app

Steps to Reproduce

1. Create a File, New .Net MAUI App

2. Add the flowing lines of code within the VerticalStackLayout

3. XAML:

   <Frame
              IsClippedToBounds="True"
              HasShadow="False"
              CornerRadius="10"
              Margin="20">
              <Frame.BackgroundColor>
                  <Color x:FactoryMethod="FromRgba">
                      <x:Arguments>
                          <x:Double>181</x:Double>
                          <x:Double>128</x:Double>
                          <x:Double>209</x:Double>
                          <x:Double>0.5</x:Double>
                      </x:Arguments>
                  </Color>
              </Frame.BackgroundColor>
              <VerticalStackLayout
                  Spacing="5">
                  <Entry
                      Placeholder="All holdings"/>
                  <Entry
                      Placeholder="Select account"/>
              </VerticalStackLayout>
          </Frame>
   

4. Run the application

5. The background color is transparent

Version with bug

7.0.408 (current)

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

Android 12

Did you find any workaround?

No

Relevant log output

No response

[Eilon]

For the overload of Color.FromRgba() that takes doubles, the ranges of every channel is 0.0...1.0. Only the int overload takes numbers in the range 0..255.

These are the supported overloads:

		public static Color FromRgba(int red, int green, int blue, int alpha); // pass 0-255 for each value
		public static Color FromRgba(float r, float g, float b, float a); // pass 0.0-1.0 for each value
		public static Color FromRgba(double r, double g, double b, double a); // pass 0.0-1.0 for each value
		public static Color FromRgba(string colorAsHex); // pass a hex string

[Akinnagbe]

Thanks @Eilon. I was actually using the wrong overload. It's working now.

[Akinnagbe]

@Eilon, Please I am getting the error below, this is affecting the UI from updating

XHR0032 The property "FactoryMethod" does not exist in the "http://schemas.microsoft.com/winfx/2009/xaml" namespace

On Hot Reload

[Eilon]

So it works the first time when you run the app, but it doesn't work later during Hot Reload?

[Akinnagbe]

Yes for first time run, but No during Hot Reload

[jonathanpeppers]

@Akinnagbe can you file a new issue about the second problem? (https://github.com/dotnet/maui/issues/9232#issuecomment-1210873566)

There isn't enough info here to follow up on the XAML hot reload issue. I think we'll need at least a XAML example? All we have is the error message XHR0032 The property "FactoryMethod" does not exist in the ... namespace.

Thanks!