XAML Shares

I am trying to implement the XAML equivalent of CSS styles. I want to create a custom layout for the ContentPage that I can use across all pages in my application and will have a different meaning for each platform.

Specifically, I'm starting with a custom add-on: I'm trying to put this code in my App.xaml file:

<Application.Resources>
    <ResourceDictionary>
        <OnPlatform x:Key="MyPadding"
             x:TypeArguments="Thickness"
            iOS="0, 20, 0, 0"
            Android="0, 0, 0, 0"/>

        <Style
            x:Key="labelGreen"
            TargetType="Entry">

            <Setter
                Property="TextColor" 
                Value="Green"/>
        </Style>

    </ResourceDictionary>
</Application.Resources>

      

In a separate ContentPage, I do the following, but it doesn't work:

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" 
        xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
        x:Class="MyApp.LoginScreen" 
        Style="{DynamicResource MyPadding}"
>

      

Custom input style works great. But the gasket doesn't work. I am getting the error: "SetValue: Unable to convert Xamarin.Forms.OnPlatform`1 [Xamarin.Forms.Thickness] to enter" Xamarin.Forms.Style "

What am I doing wrong?

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1 answer


As the error says, Thickness

it is not Style

. Change it to:

<Application.Resources>
    <ResourceDictionary>
        <OnPlatform x:Key="MyPadding"
             x:TypeArguments="Thickness"
            iOS="0, 20, 0, 0"
            Android="0, 0, 0, 0"/>

        <Style
            x:Key="pageStyle"
            TargetType="ContentPage">

            <Setter
                Property="Padding" 
                Value="{StaticResource MyPadding}"/>
        </Style>

        <Style
            x:Key="labelGreen"
            TargetType="Entry">

            <Setter
                Property="TextColor" 
                Value="Green"/>
        </Style>

    </ResourceDictionary>
</Application.Resources>


<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" 
        xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
        x:Class="MyApp.LoginScreen" 
        Style="{StaticResource pageStyle}">

      



OR

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" 
        xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
        x:Class="MyApp.LoginScreen" 
        Padding="{StaticResource MyPadding}">

      

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