按钮 VisualState Focused 不起作用

Question

我试图在单击按钮时更改按钮的字体颜色。我尝试了很多不同的东西，但没有一个奏效。这是我尝试过的最新方法，我认为应该是答案，但它不起作用。有人可以帮忙吗？PointerOver 工作正常，但在单击按钮时 Focused 不执行任何操作。

<Style x:Key="ButtonStyle" TargetType="Button">
    <Setter Property="Background" Value="Transparent" />
    <Setter Property="Foreground" Value="Black" />
    <Setter Property="FontWeight" Value="Normal" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="Button">
                <Grid
                    x:Name="RootGrid"
                    Background="{TemplateBinding Background}">
                    <VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="CommonStates">
                            <VisualState x:Name="Normal"/>

                            <VisualState x:Name="PointerOver">
                                <VisualState.Setters>
                                    <Setter Target="ContentPresenter.FontWeight" Value="Bold" />
                                </VisualState.Setters>
                            </VisualState>

                            <VisualState x:Name="Pressed"/>

                            <VisualState x:Name="Focused">
                                <VisualState.Setters>
                                    <Setter Target="ContentPresenter.Foreground" Value="Purple" />
                                </VisualState.Setters>
                            </VisualState>

                            <VisualState x:Name="Disabled">
                            </VisualState>
                        </VisualStateGroup>

                    </VisualStateManager.VisualStateGroups>
                    <ContentPresenter
                        x:Name="ContentPresenter"
                        Content="{TemplateBinding Content}"
                        ContentTransitions="{TemplateBinding ContentTransitions}"
                        ContentTemplate="{TemplateBinding ContentTemplate}" />
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

根据评论进行编辑：添加说明 - 我在发布此问题之前尝试使用 Pressed，但它没有做我想要的。单击后，我希望颜色保持应用直到单击另一个按钮，然后单击的新按钮中的文本将更改颜色，单击的上一个按钮将恢复为默认颜色。按下后，只要您松开鼠标按钮，文本就会恢复为默认值。

基于编辑的答案建议：还提供周围代码以查看是否在其他地方犯了错误。

    <Page.Resources>
    <Style x:Key="ButtonStyle" TargetType="Button">
        <Setter Property="Background" Value="Transparent" />
        <Setter Property="Foreground" Value="Black" />
        <Setter Property="FontWeight" Value="Normal" />
        <Setter Property="UseSystemFocusVisuals" Value="False" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Grid x:Name="RootGrid" Background="{TemplateBinding Background}">
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualState x:Name="Normal"/>

                                <VisualState x:Name="PointerOver">
                                    <VisualState.Setters>
                                        <Setter Target="ContentPresenter.FontWeight" Value="Bold" />
                                    </VisualState.Setters>
                                </VisualState>

                                <VisualState x:Name="Pressed"/>

                                <VisualState x:Name="Disabled">
                                </VisualState>
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="FocusStates">
                                <VisualState x:Name="Focused">
                                    <VisualState.Setters>
                                        <Setter Target="ContentPresenter.Foreground" Value="Purple" />
                                    </VisualState.Setters>
                                </VisualState>
                                <VisualState x:Name="Unfocused" />
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                        <ContentPresenter x:Name="ContentPresenter"
                      Content="{TemplateBinding Content}"
                    ContentTransitions="{TemplateBinding ContentTransitions}"
                    ContentTemplate="{TemplateBinding ContentTemplate}" />
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Page.Resources>
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
    <Button Style="{StaticResource ButtonStyle}" Content="Button" HorizontalAlignment="Left" Margin="10,180,0,0" VerticalAlignment="Top" />
    <Button Style="{StaticResource ButtonStyle}" Content="Button" HorizontalAlignment="Left" Margin="100,180,0,0" VerticalAlignment="Top"/>
    <Button Style="{StaticResource ButtonStyle}" Content="Button" HorizontalAlignment="Left" Margin="194,180,0,0" VerticalAlignment="Top"/>
</Grid>

Answer 1

在 UWP 中，默认情况下会应用系统级焦点视觉Button和许多其他控件。如果您想像在视觉状态中定义的那样管理自己的焦点视觉Focused，请尝试设置

<Setter Property="UseSystemFocusVisuals" Value="False" />

以你的风格。

另外，自定义焦点视觉状态不在内部，CommonStates而是在FocusStates. 所以你需要将你的焦点状态移到里面

<VisualStateGroup x:Name="FocusStates">
    <VisualState x:Name="Focused">
        <VisualState.Setters>
            <Setter Target="ContentPresenter.Foreground" Value="Purple" />
        </VisualState.Setters>
    </VisualState>
    <VisualState x:Name="Unfocused" />
</VisualStateGroup>

更新

当您想保持对点击的关注时，您需要两件事。首先，您需要AllowFocusOnInteraction设置为True. 默认情况下，它已经True在Button. 其次，您希望PointerFocused同时处理状态Focused。因此，将您的焦点状态替换为以下内容

<VisualStateGroup x:Name="FocusStates">
    <VisualState x:Name="Focused">
        <VisualState.Setters>
            <Setter Target="ContentPresenter.Foreground" Value="Purple" />
        </VisualState.Setters>
    </VisualState>
    <VisualState x:Name="PointerFocused">
        <VisualState.Setters>
            <Setter Target="ContentPresenter.Foreground" Value="Purple" />
        </VisualState.Setters>
    </VisualState>
    <VisualState x:Name="Unfocused" />
</VisualStateGroup> 

为什么？Button因为当您单击-from和from时Pressed，两种状态大约在同一时间发生。该状态一般在点击按键时触发。CommonStatesPointerFocusedFocusStatesFocusedTab

<Style x:Key="ButtonStyle" TargetType="Button">
    <Setter Property="Background" Value="Transparent" />
    <Setter Property="Foreground" Value="Black" />
    <Setter Property="FontWeight" Value="Normal" />
    <Setter Property="FontSize" Value="40" />
    <Setter Property="UseSystemFocusVisuals" Value="False" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="Button">
                <Grid x:Name="RootGrid" Background="{TemplateBinding Background}">
                    <VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="CommonStates">
                            <VisualState x:Name="Normal" />

                            <VisualState x:Name="PointerOver">
                                <VisualState.Setters>
                                    <Setter Target="FocusContentPresenter.FontWeight" Value="Bold" />
                                    <Setter Target="ContentPresenter.FontWeight" Value="Bold" />
                                    <Setter Target="ContentPresenter.Foreground" Value="Pink" />
                                </VisualState.Setters>
                            </VisualState>

                            <VisualState x:Name="Pressed">
                                <VisualState.Setters>
                                    <Setter Target="ContentPresenter.Foreground" Value="Purple" />
                                </VisualState.Setters>
                            </VisualState>

                            <VisualState x:Name="Disabled">
                            </VisualState>
                        </VisualStateGroup>
                        <VisualStateGroup x:Name="FocusStates">
                            <VisualState x:Name="Focused">
                                <VisualState.Setters>
                                    <Setter Target="FocusContentPresenter.Foreground" Value="Purple" />
                                    <Setter Target="FocusContentPresenter.(UIElement.Opacity)" Value="1" />
                                </VisualState.Setters>
                            </VisualState>
                            <VisualState x:Name="PointerFocused">
                                <VisualState.Setters>
                                    <Setter Target="FocusContentPresenter.Foreground" Value="Purple" />
                                    <Setter Target="FocusContentPresenter.(UIElement.Opacity)" Value="1" />
                                </VisualState.Setters>
                            </VisualState>
                            <VisualState x:Name="Unfocused" />
                        </VisualStateGroup>
                    </VisualStateManager.VisualStateGroups>
                    <ContentPresenter x:Name="ContentPresenter" Content="{TemplateBinding Content}" ContentTransitions="{TemplateBinding ContentTransitions}" ContentTemplate="{TemplateBinding ContentTemplate}" />
                    <ContentPresenter x:Name="FocusContentPresenter" Opacity="0" Content="{TemplateBinding Content}" ContentTransitions="{TemplateBinding ContentTransitions}" ContentTemplate="{TemplateBinding ContentTemplate}" />
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>