对 Xamarin Forms 中所有按钮的影响 [英] Effect on all buttons in Xamarin Forms

问题描述

我正在尝试对所有按钮产生影响，但似乎无法正确配置.

I'm trying to have a effect on all my buttons, but I can't seem to get the configuration right.

这就是我现在所拥有的:

this is what I have now:

<ResourceDictionary>
    <ControlTemplate x:Key="ButtonTemplate" >
        <Grid RowSpacing="0" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand">
            <ContentPresenter Grid.Row="0" Grid.Column="0" >
                <ContentPresenter.Effects>
                    <effects:ShadowEffect Radius="5" DistanceX="5" DistanceY="5">
                        <effects:ShadowEffect.Color>
                            <OnPlatform x:TypeArguments="Color">
                                <On Platform="iOS" Value="Black" />
                                <On Platform="Android" Value="White" />
                                <On Platform="UWP" Value="Red" />
                            </OnPlatform>
                        </effects:ShadowEffect.Color>
                    </effects:ShadowEffect>
                </ContentPresenter.Effects>
            </ContentPresenter>

        </Grid>
    </ControlTemplate>

    <Style TargetType="{x:Type Button}">
        <Setter Property="ControlTemplate" Value="{StaticResource ButtonTemplate}"></Setter>
    </Style>
</ResourceDictionary>

但是这会抛出一个无法解析按钮上的 ControlTemplateProperty.

有人知道如何做到这一点吗?

Anybody has any idea on how to do this?

推荐答案

正如您在 Xamarin.Forms 指南 控件模板不适用于按钮.

As you can see at Xamarin.Forms Guides the Control Templates isn't applicable to Button.

A ControlTemplate 可以通过设置应用于以下类型它们的 ControlTemplate 属性:

A ControlTemplate can be applied to the following types by setting their ControlTemplate properties:

• 内容页面
• 内容视图
• 模板化页面
• 模板化视图

错误无法解析按钮上的 ControlTemplateProperty 是有道理的.Button 继承自 View，而不是需要的 TemplatedView.

The error Can't resolve ControlTemplateProperty on Button make sense. Button inherites from View, not TemplatedView as would be needed.

关于您的主要观点，效果不能直接被样式消耗，但是您可以通过附加属性来实现这一点.以下是一些很好的参考资料:

So about your main point, effects cann't consumed directly by style, but you can achieve this thru attached properties. Here is some good references to you:

• 如何创建效果
• 如何用样式消费它
• 一个很好的例子

希望能帮到你(抱歉我的英语不好)

I hope it help you (and sorry for my bad english)

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