按钮 VisualState 重点不工作

Question

我正在尝试在单击按钮时更改按钮的字体颜色。我尝试了很多不同的方法，但 none 奏效了。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，但单击按钮时 Focused 没有执行任何操作。

<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，但它没有满足我的要求。单击后，我希望颜色保持应用状态，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，而单击的前一个按钮将恢复为默认颜色。按下后，只要松开鼠标按钮，文本就会恢复为默认值。

编辑基于答案的建议：还提供周围的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，有一个 系统级视觉焦点 默认应用于 Button 和许多其他控件。如果您想像在 Focused 视觉状态中定义的那样管理自己的视觉焦点，请尝试设置

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

你的风格。

此外，自定义焦点视觉状态在 CommonStates 内是 而不是 ，而是 FocusStates。所以你需要把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

当您想要将焦点保持在点击上时，您需要做两件事。首先，您需要将 AllowFocusOnInteraction 设置为 True。默认情况下，Button 上已经是 True。其次，您想要处理 PointerFocused 状态以及 Focused 状态。所以用下面的

替换你的焦点状态

<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？因为当您单击 CommonStates 中的 Button - Pressed 和 FocusStates 中的 PointerFocused 时，两种状态几乎同时发生。 Focused 状态通常在您点击 Tab 键时触发。

<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>

按钮 VisualState 重点不工作

Button VisualState Focused not working

xaml

button

visualstates

uwp

uwp-xaml

更新