xaml - 如何更改AppBarButton圆圈和图标颜色Windows Phone 8.1页面底栏

Question

我想自定义AppBarButton的圆圈和图标颜色，到目前为止我尝试了以下样式，但它不起作用。在设计模式下，它显示的圆圈颜色为绿色。但是当我运行时，圆圈颜色没有改变我在这里做错了什么。

应用栏按钮样式

 <Style x:Key="AppBarButtonStyle1" TargetType="AppBarButton">
        <Setter Property="Foreground" Value="Yellow"/>
        <Setter Property="VerticalAlignment" Value="Top"/>
        <Setter Property="HorizontalAlignment" Value="Left"/>
        <Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}"/>
        <Setter Property="FontWeight" Value="Normal"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="AppBarButton">
                    <Grid x:Name="RootGrid" Background="Transparent" Width="100">
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="ApplicationViewStates">
                                <VisualState x:Name="FullSize"/>
                                <VisualState x:Name="Compact">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="TextLabel">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Width" Storyboard.TargetName="RootGrid">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="60"/>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualState x:Name="Normal"/>
                                <VisualState x:Name="PointerOver">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Fill" Storyboard.TargetName="BackgroundEllipse">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemPointerOverBackgroundThemeBrush}"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="Content">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemPointerOverForegroundThemeBrush}"/>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Pressed">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Stroke" Storyboard.TargetName="OutlineEllipse">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="Red"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Fill" Storyboard.TargetName="BackgroundEllipse">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemForegroundThemeBrush}"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="Content">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemPressedForegroundThemeBrush}"/>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Disabled">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Stroke" Storyboard.TargetName="OutlineEllipse">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemDisabledForegroundThemeBrush}"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="Content">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemDisabledForegroundThemeBrush}"/>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="TextLabel">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemDisabledForegroundThemeBrush}"/>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="FocusStates">
                                <VisualState x:Name="Focused">
                                    <Storyboard>
                                        <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="FocusVisualWhite"/>
                                        <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="FocusVisualBlack"/>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Unfocused"/>
                                <VisualState x:Name="PointerFocused"/>
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                        <StackPanel Margin="0,14,0,13" VerticalAlignment="Top">
                            <Grid HorizontalAlignment="Center" Height="40" Margin="0,0,0,5" Width="40">
                                <Ellipse x:Name="BackgroundEllipse" Fill="{ThemeResource AppBarItemBackgroundThemeBrush}" Height="40" UseLayoutRounding="False" Width="40"/>
                                <Ellipse x:Name="OutlineEllipse" Height="40" Stroke="Green" StrokeThickness="4" UseLayoutRounding="False" Width="40"/>
                                <ContentPresenter x:Name="Content" AutomationProperties.AccessibilityView="Raw" Content="{TemplateBinding Icon}" Foreground="{TemplateBinding Foreground}" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
                            </Grid>
                            <TextBlock x:Name="TextLabel" Foreground="{ThemeResource AppBarItemForegroundThemeBrush}" FontSize="12" FontFamily="{TemplateBinding FontFamily}" TextAlignment="Center" TextWrapping="Wrap" Text="{TemplateBinding Label}" Width="88"/>
                        </StackPanel>
                        <Rectangle x:Name="FocusVisualWhite" IsHitTestVisible="False" Opacity="0" StrokeDashOffset="1.5" StrokeEndLineCap="Square" Stroke="{ThemeResource FocusVisualWhiteStrokeThemeBrush}" StrokeDashArray="1,1"/>
                        <Rectangle x:Name="FocusVisualBlack" IsHitTestVisible="False" Opacity="0" StrokeDashOffset="0.5" StrokeEndLineCap="Square" Stroke="{ThemeResource FocusVisualBlackStrokeThemeBrush}" StrokeDashArray="1,1"/>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

我的底栏xaml

 <Page.BottomAppBar>
    <CommandBar>
        <AppBarButton Style="{StaticResource AppBarButtonStyle1}" Icon="Bookmarks"></AppBarButton>
        <AppBarButton Style="{StaticResource AppBarButtonStyle1}" >
            <AppBarButton.Icon>
                <SymbolIcon Symbol="Accept"></SymbolIcon>
            </AppBarButton.Icon>
        </AppBarButton>
    </CommandBar>
</Page.BottomAppBar>

Answer 1

您不能单独这样做。应用栏是系统UI，不支持自定义图标颜色。

您可以通过设置 CommandBar.Foreground 和 .Background 属性来主题化整个应用栏。图标全部以前景色绘制，CommandBar 本身以背景色绘制:

<Page.BottomAppBar>
    <CommandBar Foreground="Cyan" Background="Magenta">
        <AppBarButton  Icon="Bookmarks"></AppBarButton>
        <AppBarButton  >
            <AppBarButton.Icon>
                <SymbolIcon Symbol="Accept"></SymbolIcon>
            </AppBarButton.Icon>
        </AppBarButton>
    </CommandBar>
</Page.BottomAppBar>

如果您确实想要单独定制的按钮，那么您不能将它们放在 AppBar 中。相反，您可以在页面底部停靠一个小堆栈面板，并编辑 AppBarButton 的样式来更改椭圆的颜色(将其 Stroke 设置为 {TemplateBinding Foreground} 将使其与 AppBarButton 中设置的 Foreground 匹配)

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="*" />
        <RowDefinition Height="60" />
    </Grid.RowDefinitions>
    <StackPanel HorizontalAlignment="Center" Orientation="Horizontal" Grid.Row="1">
        <AppBarButton Foreground="Cyan" Icon="Bookmarks" Style="{StaticResource AppBarButtonStyle1}"></AppBarButton>
        <AppBarButton Foreground="Magenta" Style="{StaticResource AppBarButtonStyle1}">
            <AppBarButton.Icon>
                <SymbolIcon Symbol="Accept"></SymbolIcon>
            </AppBarButton.Icon>
        </AppBarButton>
    </StackPanel>
</Grid>

除了演示之外，我不建议将这些颜色组合用于任何用途:在真实的应用程序中，颜色应该从 ThemeDictionary 中绘制，在高对比度主题中会回退到默认值。