xamarin - 如何在样式资源中包含 OnPlatform？

Question

我有这种风格:

<Style x:Key="pointButton" TargetType="Button">
    <Setter Property="BorderColor" Value="#999999"/>
    <Setter Property="BorderWidth" Value="1" />
    <Setter Property="TextColor" Value="#AAAAAA" />
    <Setter Property="FontAttributes" Value="Bold" />
    <Setter Property="HorizontalOptions" Value="FillAndExpand" />
    <Setter Property="VerticalOptions" Value="StartAndExpand" />
    <Setter Property="Margin" Value="10,10,10,10" />
    <Setter Property="HeightRequest" Value="40" />
</Style>

我想包括这一点。可能吗？

<Button.FontSize>
    <OnPlatform x:TypeArguments="x:Double" iOS="25" Android="20" />
</Button.FontSize>

Answer 1

使用新的 Xamarin OnPlatform specification可以直接在 style 标签中定义平台样式:

<Style x:Key="buttonStyle" TargetType="Button">
    <Setter Property="FontSize">
        <OnPlatform x:TypeArguments="x:Double">
            <On Platform="Android">40</On>
            <On Platform="iOS">10</On>
        </OnPlatform>
    </Setter>
</Style>