define color in Xamarin.Forms XAML without “The type 'Color' does not support direct content”
0
There are a number of places in the Xamarin docs and blog (here's one, and the docs don't even cover this issue) that refer to color definitions in a ResourceDictionary that look like this:
<Application.Resources>
<ResourceDictionary>
<Color x:Key="backgroundColor">#33302E</Color>
<Color x:Key="textColor">White</Color>
</ResourceDictionary>
</Application.Resources>
That seems to be old news, however, because if you try that now, you get a compilation error -- The type 'Color' does not support direct content.
The current norm seems to be to use a FactoryMethod (like FromHsla) and pass numeric color arguments. But is there a current concise syntax for defining Color keys (by name, ideally, like Red) in a ResourceDictionary, using XAML?
xaml xamarin.forms
asked Nov 24 '18 at 0:38
Graham CharlesGraham Charles
5,64632035
|
show 1 more comment
0
There are a number of places in the Xamarin docs and blog (here's one, and the docs don't even cover this issue) that refer to color definitions in a ResourceDictionary that look like this:
<Application.Resources>
<ResourceDictionary>
<Color x:Key="backgroundColor">#33302E</Color>
<Color x:Key="textColor">White</Color>
</ResourceDictionary>
</Application.Resources>
That seems to be old news, however, because if you try that now, you get a compilation error -- The type 'Color' does not support direct content.
The current norm seems to be to use a FactoryMethod (like FromHsla) and pass numeric color arguments. But is there a current concise syntax for defining Color keys (by name, ideally, like Red) in a ResourceDictionary, using XAML?
xaml xamarin.forms
asked Nov 24 '18 at 0:38
Graham CharlesGraham Charles
5,64632035
The way you're doing it should work perfectly well. Make sure you're referencing all necessaryxmlnsnamespaces.
– jsanalytics
Nov 24 '18 at 22:52
It demonstrably does not work in Xamarin.Forms 3.4 (latest), your jpeg notwithstanding. The only namespace that's referenced is xmlns="xamarin.com/schemas/2014/forms" -- what else are you suggesting is required? I tried referencing System.Color, but the same compilation error comes up -- does not support direct content.
– Graham Charles
Nov 25 '18 at 4:50
Are you missing thehttp://in your namespace ?
– jsanalytics
Nov 25 '18 at 7:41
No. Here's the entire definition:<ResourceDictionary xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:assets="clr-namespace:MyApp.Assets" x:Class="MyApp.Assets.Colors">It's not my references -- the syntax simply doesn't work anymore in 3.4. If <Color>Red</Color> still works for you, you're either using an older X.F or some other Color library.
– Graham Charles
Nov 25 '18 at 20:50
It works with both, 3.1 and 3.4.0.1008975. Sometimes VS gets a little cranky when it comes to XAML. One thing you can try is to tell it exactly where to findColor:xmlns:xyz="clr-namespace:Xamarin.Forms;assembly=Xamarin.Forms.Core"and then use<xyz:Color/>. Of course, adjust it for whatever prefix you like.
– jsanalytics
Nov 25 '18 at 22:06
|
show 1 more comment
0
0
0
There are a number of places in the Xamarin docs and blog (here's one, and the docs don't even cover this issue) that refer to color definitions in a ResourceDictionary that look like this:
<Application.Resources>
<ResourceDictionary>
<Color x:Key="backgroundColor">#33302E</Color>
<Color x:Key="textColor">White</Color>
</ResourceDictionary>
</Application.Resources>
That seems to be old news, however, because if you try that now, you get a compilation error -- The type 'Color' does not support direct content.
The current norm seems to be to use a FactoryMethod (like FromHsla) and pass numeric color arguments. But is there a current concise syntax for defining Color keys (by name, ideally, like Red) in a ResourceDictionary, using XAML?
xaml xamarin.forms
asked Nov 24 '18 at 0:38
Graham CharlesGraham Charles
5,64632035
There are a number of places in the Xamarin docs and blog (here's one, and the docs don't even cover this issue) that refer to color definitions in a ResourceDictionary that look like this:
<Application.Resources>
<ResourceDictionary>
<Color x:Key="backgroundColor">#33302E</Color>
<Color x:Key="textColor">White</Color>
</ResourceDictionary>
</Application.Resources>
That seems to be old news, however, because if you try that now, you get a compilation error -- The type 'Color' does not support direct content.
The current norm seems to be to use a FactoryMethod (like FromHsla) and pass numeric color arguments. But is there a current concise syntax for defining Color keys (by name, ideally, like Red) in a ResourceDictionary, using XAML?
xaml xamarin.forms
xaml xamarin.forms
asked Nov 24 '18 at 0:38
Graham CharlesGraham Charles
5,64632035
asked Nov 24 '18 at 0:38
Graham CharlesGraham Charles
5,64632035
asked Nov 24 '18 at 0:38
Graham CharlesGraham Charles
5,64632035
asked Nov 24 '18 at 0:38
Graham CharlesGraham Charles
5,64632035
asked Nov 24 '18 at 0:38
Graham CharlesGraham Charles
5,64632035
5,64632035
The way you're doing it should work perfectly well. Make sure you're referencing all necessaryxmlnsnamespaces.
– jsanalytics
Nov 24 '18 at 22:52
It demonstrably does not work in Xamarin.Forms 3.4 (latest), your jpeg notwithstanding. The only namespace that's referenced is xmlns="xamarin.com/schemas/2014/forms" -- what else are you suggesting is required? I tried referencing System.Color, but the same compilation error comes up -- does not support direct content.
– Graham Charles
Nov 25 '18 at 4:50
Are you missing thehttp://in your namespace ?
– jsanalytics
Nov 25 '18 at 7:41
No. Here's the entire definition:<ResourceDictionary xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:assets="clr-namespace:MyApp.Assets" x:Class="MyApp.Assets.Colors">It's not my references -- the syntax simply doesn't work anymore in 3.4. If <Color>Red</Color> still works for you, you're either using an older X.F or some other Color library.
– Graham Charles
Nov 25 '18 at 20:50
It works with both, 3.1 and 3.4.0.1008975. Sometimes VS gets a little cranky when it comes to XAML. One thing you can try is to tell it exactly where to findColor:xmlns:xyz="clr-namespace:Xamarin.Forms;assembly=Xamarin.Forms.Core"and then use<xyz:Color/>. Of course, adjust it for whatever prefix you like.
– jsanalytics
Nov 25 '18 at 22:06
|
show 1 more comment
The way you're doing it should work perfectly well. Make sure you're referencing all necessaryxmlnsnamespaces.
– jsanalytics
Nov 24 '18 at 22:52
It demonstrably does not work in Xamarin.Forms 3.4 (latest), your jpeg notwithstanding. The only namespace that's referenced is xmlns="xamarin.com/schemas/2014/forms" -- what else are you suggesting is required? I tried referencing System.Color, but the same compilation error comes up -- does not support direct content.
– Graham Charles
Nov 25 '18 at 4:50
Are you missing thehttp://in your namespace ?
– jsanalytics
Nov 25 '18 at 7:41
No. Here's the entire definition:<ResourceDictionary xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:assets="clr-namespace:MyApp.Assets" x:Class="MyApp.Assets.Colors">It's not my references -- the syntax simply doesn't work anymore in 3.4. If <Color>Red</Color> still works for you, you're either using an older X.F or some other Color library.
– Graham Charles
Nov 25 '18 at 20:50
It works with both, 3.1 and 3.4.0.1008975. Sometimes VS gets a little cranky when it comes to XAML. One thing you can try is to tell it exactly where to findColor:xmlns:xyz="clr-namespace:Xamarin.Forms;assembly=Xamarin.Forms.Core"and then use<xyz:Color/>. Of course, adjust it for whatever prefix you like.
– jsanalytics
Nov 25 '18 at 22:06
The way you're doing it should work perfectly well. Make sure you're referencing all necessary
xmlns namespaces.– jsanalytics
Nov 24 '18 at 22:52
The way you're doing it should work perfectly well. Make sure you're referencing all necessary
xmlns namespaces.– jsanalytics
Nov 24 '18 at 22:52
It demonstrably does not work in Xamarin.Forms 3.4 (latest), your jpeg notwithstanding. The only namespace that's referenced is xmlns="xamarin.com/schemas/2014/forms" -- what else are you suggesting is required? I tried referencing System.Color, but the same compilation error comes up -- does not support direct content.
– Graham Charles
Nov 25 '18 at 4:50
It demonstrably does not work in Xamarin.Forms 3.4 (latest), your jpeg notwithstanding. The only namespace that's referenced is xmlns="xamarin.com/schemas/2014/forms" -- what else are you suggesting is required? I tried referencing System.Color, but the same compilation error comes up -- does not support direct content.
– Graham Charles
Nov 25 '18 at 4:50
Are you missing the
http:// in your namespace ?– jsanalytics
Nov 25 '18 at 7:41
Are you missing the
http:// in your namespace ?– jsanalytics
Nov 25 '18 at 7:41
No. Here's the entire definition:
<ResourceDictionary xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:assets="clr-namespace:MyApp.Assets" x:Class="MyApp.Assets.Colors"> It's not my references -- the syntax simply doesn't work anymore in 3.4. If <Color>Red</Color> still works for you, you're either using an older X.F or some other Color library.– Graham Charles
Nov 25 '18 at 20:50
No. Here's the entire definition:
<ResourceDictionary xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:assets="clr-namespace:MyApp.Assets" x:Class="MyApp.Assets.Colors"> It's not my references -- the syntax simply doesn't work anymore in 3.4. If <Color>Red</Color> still works for you, you're either using an older X.F or some other Color library.– Graham Charles
Nov 25 '18 at 20:50
It works with both, 3.1 and 3.4.0.1008975. Sometimes VS gets a little cranky when it comes to XAML. One thing you can try is to tell it exactly where to find
Color : xmlns:xyz="clr-namespace:Xamarin.Forms;assembly=Xamarin.Forms.Core" and then use <xyz:Color/>. Of course, adjust it for whatever prefix you like.– jsanalytics
Nov 25 '18 at 22:06
It works with both, 3.1 and 3.4.0.1008975. Sometimes VS gets a little cranky when it comes to XAML. One thing you can try is to tell it exactly where to find
Color : xmlns:xyz="clr-namespace:Xamarin.Forms;assembly=Xamarin.Forms.Core" and then use <xyz:Color/>. Of course, adjust it for whatever prefix you like.– jsanalytics
Nov 25 '18 at 22:06
|
show 1 more comment
2 Answers
2
active
oldest
votes
0
You need to try "SolidColorBrush" Color cannot be directly set. Something like below..
<!--#region COLORS-->
<SolidColorBrush x:Key="SCBCement" Color="#FF3B6983"/>
<SolidColorBrush x:Key="SCBOrange" Color="#FFFFAC48"/>
<SolidColorBrush x:Key="SCBLightGrey" Color="#FF3C3C3C"/>
<SolidColorBrush x:Key="SCBLightBrown" Color="#FF933A3A"/>
<SolidColorBrush x:Key="SCBYes" Color="#FF10BD10"/>
<SolidColorBrush x:Key="SCBNo" Color="#FFBD2010"/>
<!--#endregion-->
Then use it like below:
<ListView ItemContainerStyle="{StaticResource StyleListViewItem}" Background="{x:Null}" BorderBrush="{x:Null}" ItemsSource="{Binding Value}" Foreground="{StaticResource SCBCement}">
answered Nov 24 '18 at 11:11
Senguttuvan MahalingamSenguttuvan Mahalingam
744
There's no definition forSolidColorBrushin Xamarin.Forms 3.4. It appears to be a WPF thing?
– Graham Charles
Nov 25 '18 at 4:55
add a comment |
0
If you define a color via ResourceDictionary you only can declare it by Hex (with or without alpha channel), the enum color actually is defined via code on the Color class, you can create a color list this way
namespace YourNamespace
{
public static class Colors
{
public statis Color BackgroundColor = Color.FromHex("#33302E");
...
}
}
answered Nov 24 '18 at 20:21
FabriBertaniFabriBertani
363411
Yes, I'm aware that I can use C# to declare the color constants --public static Color ReverseTextBackground = Color.DarkGray;-- but the question is how to use XAML, as the documentation appears to be incorrect.
– Graham Charles
Nov 25 '18 at 4:52
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
You need to try "SolidColorBrush" Color cannot be directly set. Something like below..
<!--#region COLORS-->
<SolidColorBrush x:Key="SCBCement" Color="#FF3B6983"/>
<SolidColorBrush x:Key="SCBOrange" Color="#FFFFAC48"/>
<SolidColorBrush x:Key="SCBLightGrey" Color="#FF3C3C3C"/>
<SolidColorBrush x:Key="SCBLightBrown" Color="#FF933A3A"/>
<SolidColorBrush x:Key="SCBYes" Color="#FF10BD10"/>
<SolidColorBrush x:Key="SCBNo" Color="#FFBD2010"/>
<!--#endregion-->
Then use it like below:
<ListView ItemContainerStyle="{StaticResource StyleListViewItem}" Background="{x:Null}" BorderBrush="{x:Null}" ItemsSource="{Binding Value}" Foreground="{StaticResource SCBCement}">
answered Nov 24 '18 at 11:11
Senguttuvan MahalingamSenguttuvan Mahalingam
744
There's no definition forSolidColorBrushin Xamarin.Forms 3.4. It appears to be a WPF thing?
– Graham Charles
Nov 25 '18 at 4:55
add a comment |
0
You need to try "SolidColorBrush" Color cannot be directly set. Something like below..
<!--#region COLORS-->
<SolidColorBrush x:Key="SCBCement" Color="#FF3B6983"/>
<SolidColorBrush x:Key="SCBOrange" Color="#FFFFAC48"/>
<SolidColorBrush x:Key="SCBLightGrey" Color="#FF3C3C3C"/>
<SolidColorBrush x:Key="SCBLightBrown" Color="#FF933A3A"/>
<SolidColorBrush x:Key="SCBYes" Color="#FF10BD10"/>
<SolidColorBrush x:Key="SCBNo" Color="#FFBD2010"/>
<!--#endregion-->
Then use it like below:
<ListView ItemContainerStyle="{StaticResource StyleListViewItem}" Background="{x:Null}" BorderBrush="{x:Null}" ItemsSource="{Binding Value}" Foreground="{StaticResource SCBCement}">
answered Nov 24 '18 at 11:11
Senguttuvan MahalingamSenguttuvan Mahalingam
744
There's no definition forSolidColorBrushin Xamarin.Forms 3.4. It appears to be a WPF thing?
– Graham Charles
Nov 25 '18 at 4:55
add a comment |
0
0
0
You need to try "SolidColorBrush" Color cannot be directly set. Something like below..
<!--#region COLORS-->
<SolidColorBrush x:Key="SCBCement" Color="#FF3B6983"/>
<SolidColorBrush x:Key="SCBOrange" Color="#FFFFAC48"/>
<SolidColorBrush x:Key="SCBLightGrey" Color="#FF3C3C3C"/>
<SolidColorBrush x:Key="SCBLightBrown" Color="#FF933A3A"/>
<SolidColorBrush x:Key="SCBYes" Color="#FF10BD10"/>
<SolidColorBrush x:Key="SCBNo" Color="#FFBD2010"/>
<!--#endregion-->
Then use it like below:
<ListView ItemContainerStyle="{StaticResource StyleListViewItem}" Background="{x:Null}" BorderBrush="{x:Null}" ItemsSource="{Binding Value}" Foreground="{StaticResource SCBCement}">
answered Nov 24 '18 at 11:11
Senguttuvan MahalingamSenguttuvan Mahalingam
744
You need to try "SolidColorBrush" Color cannot be directly set. Something like below..
<!--#region COLORS-->
<SolidColorBrush x:Key="SCBCement" Color="#FF3B6983"/>
<SolidColorBrush x:Key="SCBOrange" Color="#FFFFAC48"/>
<SolidColorBrush x:Key="SCBLightGrey" Color="#FF3C3C3C"/>
<SolidColorBrush x:Key="SCBLightBrown" Color="#FF933A3A"/>
<SolidColorBrush x:Key="SCBYes" Color="#FF10BD10"/>
<SolidColorBrush x:Key="SCBNo" Color="#FFBD2010"/>
<!--#endregion-->
Then use it like below:
<ListView ItemContainerStyle="{StaticResource StyleListViewItem}" Background="{x:Null}" BorderBrush="{x:Null}" ItemsSource="{Binding Value}" Foreground="{StaticResource SCBCement}">
answered Nov 24 '18 at 11:11
Senguttuvan MahalingamSenguttuvan Mahalingam
744
answered Nov 24 '18 at 11:11
Senguttuvan MahalingamSenguttuvan Mahalingam
744
answered Nov 24 '18 at 11:11
Senguttuvan MahalingamSenguttuvan Mahalingam
744
answered Nov 24 '18 at 11:11
Senguttuvan MahalingamSenguttuvan Mahalingam
744
744
There's no definition forSolidColorBrushin Xamarin.Forms 3.4. It appears to be a WPF thing?
– Graham Charles
Nov 25 '18 at 4:55
add a comment |
There's no definition forSolidColorBrushin Xamarin.Forms 3.4. It appears to be a WPF thing?
– Graham Charles
Nov 25 '18 at 4:55
There's no definition for
SolidColorBrush in Xamarin.Forms 3.4. It appears to be a WPF thing?– Graham Charles
Nov 25 '18 at 4:55
There's no definition for
SolidColorBrush in Xamarin.Forms 3.4. It appears to be a WPF thing?– Graham Charles
Nov 25 '18 at 4:55
add a comment |
0
If you define a color via ResourceDictionary you only can declare it by Hex (with or without alpha channel), the enum color actually is defined via code on the Color class, you can create a color list this way
namespace YourNamespace
{
public static class Colors
{
public statis Color BackgroundColor = Color.FromHex("#33302E");
...
}
}
answered Nov 24 '18 at 20:21
FabriBertaniFabriBertani
363411
Yes, I'm aware that I can use C# to declare the color constants --public static Color ReverseTextBackground = Color.DarkGray;-- but the question is how to use XAML, as the documentation appears to be incorrect.
– Graham Charles
Nov 25 '18 at 4:52
add a comment |
0
If you define a color via ResourceDictionary you only can declare it by Hex (with or without alpha channel), the enum color actually is defined via code on the Color class, you can create a color list this way
namespace YourNamespace
{
public static class Colors
{
public statis Color BackgroundColor = Color.FromHex("#33302E");
...
}
}
answered Nov 24 '18 at 20:21
FabriBertaniFabriBertani
363411
Yes, I'm aware that I can use C# to declare the color constants --public static Color ReverseTextBackground = Color.DarkGray;-- but the question is how to use XAML, as the documentation appears to be incorrect.
– Graham Charles
Nov 25 '18 at 4:52
add a comment |
0
0
0
If you define a color via ResourceDictionary you only can declare it by Hex (with or without alpha channel), the enum color actually is defined via code on the Color class, you can create a color list this way
namespace YourNamespace
{
public static class Colors
{
public statis Color BackgroundColor = Color.FromHex("#33302E");
...
}
}
answered Nov 24 '18 at 20:21
FabriBertaniFabriBertani
363411
If you define a color via ResourceDictionary you only can declare it by Hex (with or without alpha channel), the enum color actually is defined via code on the Color class, you can create a color list this way
namespace YourNamespace
{
public static class Colors
{
public statis Color BackgroundColor = Color.FromHex("#33302E");
...
}
}
answered Nov 24 '18 at 20:21
FabriBertaniFabriBertani
363411
answered Nov 24 '18 at 20:21
FabriBertaniFabriBertani
363411
answered Nov 24 '18 at 20:21
FabriBertaniFabriBertani
363411
answered Nov 24 '18 at 20:21
FabriBertaniFabriBertani
363411
363411
Yes, I'm aware that I can use C# to declare the color constants --public static Color ReverseTextBackground = Color.DarkGray;-- but the question is how to use XAML, as the documentation appears to be incorrect.
– Graham Charles
Nov 25 '18 at 4:52
add a comment |
Yes, I'm aware that I can use C# to declare the color constants --public static Color ReverseTextBackground = Color.DarkGray;-- but the question is how to use XAML, as the documentation appears to be incorrect.
– Graham Charles
Nov 25 '18 at 4:52
Yes, I'm aware that I can use C# to declare the color constants --
public static Color ReverseTextBackground = Color.DarkGray; -- but the question is how to use XAML, as the documentation appears to be incorrect.– Graham Charles
Nov 25 '18 at 4:52
Yes, I'm aware that I can use C# to declare the color constants --
public static Color ReverseTextBackground = Color.DarkGray; -- but the question is how to use XAML, as the documentation appears to be incorrect.– Graham Charles
Nov 25 '18 at 4:52
add a comment |
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The way you're doing it should work perfectly well. Make sure you're referencing all necessary
xmlnsnamespaces.– jsanalytics
Nov 24 '18 at 22:52
It demonstrably does not work in Xamarin.Forms 3.4 (latest), your jpeg notwithstanding. The only namespace that's referenced is xmlns="xamarin.com/schemas/2014/forms" -- what else are you suggesting is required? I tried referencing System.Color, but the same compilation error comes up -- does not support direct content.
– Graham Charles
Nov 25 '18 at 4:50
Are you missing the
http://in your namespace ?– jsanalytics
Nov 25 '18 at 7:41
No. Here's the entire definition:
<ResourceDictionary xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:assets="clr-namespace:MyApp.Assets" x:Class="MyApp.Assets.Colors">It's not my references -- the syntax simply doesn't work anymore in 3.4. If <Color>Red</Color> still works for you, you're either using an older X.F or some other Color library.– Graham Charles
Nov 25 '18 at 20:50
It works with both, 3.1 and 3.4.0.1008975. Sometimes VS gets a little cranky when it comes to XAML. One thing you can try is to tell it exactly where to find
Color:xmlns:xyz="clr-namespace:Xamarin.Forms;assembly=Xamarin.Forms.Core"and then use<xyz:Color/>. Of course, adjust it for whatever prefix you like.– jsanalytics
Nov 25 '18 at 22:06