我查看了Apply PivotItemHeader style to PivotItem in UWP，但我无法将这些建议应用到我的代码中。
我正在尝试根据设备是桌面还是移动来更改数据透视表中的PivotHeaderItem的样式。我的资源字典中有2个显式样式。
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:Test">
<Style x:Key="PivotHeaderItemStyle1" TargetType="PivotHeaderItem">
<Style x:Key="PivotHeaderItemStyle2" TargetType="PivotHeaderItem">
</ResourceDictionary>
我的MainPage.xaml是：
<Page
x:Class="Test.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:Test"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Page.Resources>
<ResourceDictionary Source="Dictionary1.xaml"/>
</Page.Resources>
<Grid>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="DeviceStates">
<VisualState x:Name="Desktop">
<VisualState.StateTriggers>
<local:DeviceStateTrigger DeviceFamily="Windows.Desktop"/>
</VisualState.StateTriggers>
<VisualState.Setters>
I don't know what to put here ---> <Setter Target="PivotHeaderItem1.Style" Value="{StaticResource PivotHeaderItemStyle1}"/>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="Mobile">
<VisualState.StateTriggers>
<local:DeviceStateTrigger DeviceFamily="Windows.Mobile"/>
</VisualState.StateTriggers>
<VisualState.Setters>
I don't know what to put here ---> <Setter Target="PivotHeaderItem1.Style" Value="{StaticResource PivotHeaderItemStyle2}"/>
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Pivot x:Name="rootPivot">
<PivotItem x:Name="Pivot1" Header="Pivot 1"/>
<PivotItem x:Name="Pivot2" Header="Pivot 2"/>
<PivotItem x:Name="Pivot3" Header="Pivot 3"/>
</Pivot>
</Grid>
</Page>
我试过把代码放到：
<PivotHeaderItem x:Name="PivotHeaderItem1"/>
在数据透视代码的不同部分，但我只收到错误。
如果我从资源字典中删除其中一个样式并将其他样式更改为隐式（删除x：Key），则样式应用正确并且我没有收到任何错误。
简而言之，我认为我的问题是我不知道如何x：命名一个PivotHeaderItem。
答案 0 :(得分：3)
<强>更新
使用枢轴内的样式
<Style x:Key="headerItemStyle" TargetType="PivotHeaderItem">
....
</Style >
<Pivot x:Name="pivot">
<Pivot.Resources>
<Style TargetType="PivotHeaderItem" BasedOn="{StaticResource headerItemStyle}" />
</Pivot.Resources>
...
</Pivot>
以下是如何在PivotHeader的控件模板中执行此操作
在下面的示例中，在桌面视图中，Pivot Header的背景将为黄色，而在移动设备中则为绿色
<Style TargetType="PivotHeaderItem">
<Setter Property="FontSize" Value="{ThemeResource PivotHeaderItemFontSize}" />
<Setter Property="FontFamily" Value="{ThemeResource PivotHeaderItemFontFamily}" />
<Setter Property="FontWeight" Value="{ThemeResource PivotHeaderItemThemeFontWeight}" />
<Setter Property="CharacterSpacing" Value="{ThemeResource PivotHeaderItemCharacterSpacing}" />
<Setter Property="Background" Value="Transparent" />
<Setter Property="Foreground" Value="{ThemeResource SystemControlForegroundBaseMediumBrush}" />
<Setter Property="Padding" Value="{ThemeResource PivotHeaderItemMargin}" />
<Setter Property="Height" Value="48" />
<Setter Property="VerticalContentAlignment" Value="Center" />
<Setter Property="IsTabStop" Value="False" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="PivotHeaderItem">
<Grid
x:Name="Grid"
Background="{TemplateBinding Background}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="SelectionStates">
<VisualStateGroup.Transitions>
<VisualTransition From="Unselected" To="UnselectedLocked" GeneratedDuration="0:0:0.33" />
<VisualTransition From="UnselectedLocked" To="Unselected" GeneratedDuration="0:0:0.33" />
</VisualStateGroup.Transitions>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Foreground" >
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledBaseMediumLowBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Unselected" />
<VisualState x:Name="UnselectedLocked">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="ContentPresenterTranslateTransform"
Storyboard.TargetProperty="X"
Duration="0" To="{ThemeResource PivotHeaderItemLockedTranslation}" />
<DoubleAnimation Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="(UIElement.Opacity)"
Duration="0" To="0" />
</Storyboard>
</VisualState>
<VisualState x:Name="Selected">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Foreground" >
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseHighBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Grid"
Storyboard.TargetProperty="Background" >
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightTransparentBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="UnselectedPointerOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Foreground" >
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseMediumHighBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Grid"
Storyboard.TargetProperty="Background" >
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightTransparentBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="SelectedPointerOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Foreground" >
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseMediumHighBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Grid"
Storyboard.TargetProperty="Background" >
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightTransparentBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="UnselectedPressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Foreground" >
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseMediumHighBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Grid"
Storyboard.TargetProperty="Background" >
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightTransparentBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="SelectedPressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Foreground" >
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseMediumHighBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Grid"
Storyboard.TargetProperty="Background" >
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightTransparentBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="WindowStates">
<VisualState x:Name="WideState">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="800" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="ContentPresenter.Background" Value="LightYellow" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="NarrowState">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="0" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="ContentPresenter.Background" Value="LightGreen" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter
x:Name="ContentPresenter"
Content="{TemplateBinding Content}"
ContentTemplate="{TemplateBinding ContentTemplate}"
Margin="{TemplateBinding Padding}"
FontSize="{TemplateBinding FontSize}"
FontFamily="{TemplateBinding FontFamily}"
FontWeight="{TemplateBinding FontWeight}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
<ContentPresenter.RenderTransform>
<TranslateTransform x:Name="ContentPresenterTranslateTransform" />
</ContentPresenter.RenderTransform>
</ContentPresenter>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>