Xaml 如何根据屏幕大小更改样式?
我想根据屏幕大小更改堆叠面板的方向 我一直在跟踪,但还没有开始工作 以下是到目前为止我得到的信息:Xaml 如何根据屏幕大小更改样式?,xaml,uwp,visualstatemanager,Xaml,Uwp,Visualstatemanager,我想根据屏幕大小更改堆叠面板的方向 我一直在跟踪,但还没有开始工作 以下是到目前为止我得到的信息: <VisualStateManager.VisualStateGroups> <VisualStateGroup x:Name="SharedVisualStates"> <VisualState x:Name="DefaultLayout"> <VisualState.StateTriggers>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="SharedVisualStates">
<VisualState x:Name="DefaultLayout">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="720" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="GuidesList.Style" Value="{StaticResource DefaultGuidesList}" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="NarrowLayout">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="0" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="GuidesList.Style" Value="{StaticResource NarrowGuidesList}" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Page.Resources>
<Style x:Key="DefaultGuidesList" TargetType="StackPanel" >
<Setter Property="Orientation" Value="Horizontal"/>
</Style>
<Style x:Key="NarrowGuidesList" TargetType="StackPanel" >
<Setter Property="Orientation" Value="Vertical"/>
</Style>
</Page.Resources>
<StackPanel
x:Name="GuidesList">
<StackPanel ... />
<StackPanel ... />
</StackPanel>
有什么想法吗?你也可以用以前的好方法来做。
在XAML中添加两种可视状态:
<StackPanel x:Name="GuidesList">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup>
<VisualState x:Name="HorLayout">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="GuidesList" Storyboard.TargetProperty="Orientation">
<DiscreteObjectKeyFrame KeyTime="0" Value="Horizontal"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="VertLayout">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="GuidesList" Storyboard.TargetProperty="Orientation">
<DiscreteObjectKeyFrame KeyTime="0" Value="Vertical"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
.....
.....
和处理页面大小更改事件:
private void Page_SizeChanged(object sender, SizeChangedEventArgs e)
{
if (e.NewSize.Width < 700)
{
VisualStateManager.GoToState(this, "VertLayout", true);
}
else
{
VisualStateManager.GoToState(this, "HorLayout", true);
}
}
private void页面\u SizeChanged(对象发送方,SizeChangedEventArgs e)
{
如果(如NewSize.Width<700)
{
VisualStateManager.GoToState(此“VertLayout”,true);
}
其他的
{
VisualStateManager.GoToState(这是“HorLayout”,true);
}
}
你也可以用旧的好方法来做。在XAML中添加两种可视状态:
<StackPanel x:Name="GuidesList">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup>
<VisualState x:Name="HorLayout">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="GuidesList" Storyboard.TargetProperty="Orientation">
<DiscreteObjectKeyFrame KeyTime="0" Value="Horizontal"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="VertLayout">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="GuidesList" Storyboard.TargetProperty="Orientation">
<DiscreteObjectKeyFrame KeyTime="0" Value="Vertical"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
.....
.....
和处理页面大小更改事件:
private void Page_SizeChanged(object sender, SizeChangedEventArgs e)
{
if (e.NewSize.Width < 700)
{
VisualStateManager.GoToState(this, "VertLayout", true);
}
else
{
VisualStateManager.GoToState(this, "HorLayout", true);
}
}
private void页面\u SizeChanged(对象发送方,SizeChangedEventArgs e)
{
如果(如NewSize.Width<700)
{
VisualStateManager.GoToState(此“VertLayout”,true);
}
其他的
{
VisualStateManager.GoToState(这是“HorLayout”,true);
}
}
根据您的代码,您将VisualStateManager
放错了位置。要使其正常工作,可以将VisualStateManager.VisualStateGroups
添加到页面的根元素中
控件作者或应用程序开发人员使用附加属性将对象元素添加到XAML中控件模板定义的根元素中
有关更多信息,请参阅
因此,我更改了您的代码,如下所示:
<Page x:Class="UWP.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="using:UWP"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Page.Resources>
<Style x:Key="DefaultGuidesList" TargetType="StackPanel">
<Setter Property="Orientation" Value="Horizontal" />
</Style>
<Style x:Key="NarrowGuidesList" TargetType="StackPanel">
<Setter Property="Orientation" Value="Vertical" />
</Style>
</Page.Resources>
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="SharedVisualStates">
<VisualState x:Name="DefaultLayout">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="720" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="GuidesList.Style" Value="{StaticResource DefaultGuidesList}" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="NarrowLayout">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="0" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="GuidesList.Style" Value="{StaticResource NarrowGuidesList}" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<StackPanel x:Name="GuidesList">
<StackPanel Width="400"
Height="200"
Background="Red" />
<StackPanel Width="400"
Height="200"
Background="Blue" />
</StackPanel>
</Grid>
</Page>
根据您的代码,您将VisualStateManager
放错了位置。要使其正常工作,可以将VisualStateManager.VisualStateGroups
添加到页面的根元素中
控件作者或应用程序开发人员使用附加属性将对象元素添加到XAML中控件模板定义的根元素中
有关更多信息,请参阅
因此,我更改了您的代码,如下所示:
<Page x:Class="UWP.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="using:UWP"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Page.Resources>
<Style x:Key="DefaultGuidesList" TargetType="StackPanel">
<Setter Property="Orientation" Value="Horizontal" />
</Style>
<Style x:Key="NarrowGuidesList" TargetType="StackPanel">
<Setter Property="Orientation" Value="Vertical" />
</Style>
</Page.Resources>
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="SharedVisualStates">
<VisualState x:Name="DefaultLayout">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="720" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="GuidesList.Style" Value="{StaticResource DefaultGuidesList}" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="NarrowLayout">
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="0" />
</VisualState.StateTriggers>
<VisualState.Setters>
<Setter Target="GuidesList.Style" Value="{StaticResource NarrowGuidesList}" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<StackPanel x:Name="GuidesList">
<StackPanel Width="400"
Height="200"
Background="Red" />
<StackPanel Width="400"
Height="200"
Background="Blue" />
</StackPanel>
</Grid>
</Page>
很高兴知道如何以编程方式处理此问题,干杯!很高兴知道如何以编程方式处理此问题,干杯!