我希望最终确定应用程序的外观和风格,并且难以将过渡动画应用于一个非常基本的问题。
附上你可以找到我挣扎的代码。我已经评论了我在开发和原型设计过程中使用的setter。它们就像我期望的那样工作。
故事板过渡不会以任何形式或形式发挥作用。只添加一个故事板转换与所有或任何设置器和#34;工作"只要我没有遇到任何运行时错误,但转换根本不会出现。
我想知道我是否可能不会完全误解故事板的运作方式。
我得到的错误是:
Multiple animations in the same containing Storyboard cannot target the same property on a single element.
这是简化的代码:
<Grid>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup>
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:1"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="StateA">
<!--<VisualState.Setters>
<Setter Target="FirstElement.Visibility" Value="Visible" />
<Setter Target="SecondElement.Visibility" Value="Collapsed" />
</VisualState.Setters>-->
<Storyboard>
<PopOutThemeAnimation TargetName="SecondElement"/>
<PopInThemeAnimation TargetName="FirstElement"/>
</Storyboard>
</VisualState>
<VisualState x:Name="StateB">
<!-- <VisualState.Setters>
<Setter Target="FirstElement.Visibility" Value="Collapsed" />
<Setter Target="SecondElement.Visibility" Value="Visible" />
</VisualState.Setters>-->
<Storyboard>
<PopOutThemeAnimation TargetName="FirstElement"/>
<PopInThemeAnimation TargetName="SecondElement"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle Name="FirstElement"
Fill="Blue"
HorizontalAlignment="Center"
VerticalAlignment="Center"
Width="200"
Height="200"
DoubleTapped="GoToStateB" />
<Rectangle Name="SecondElement"
Fill="Red"
HorizontalAlignment="Center"
VerticalAlignment="Center"
Width="200"
Height="200"
DoubleTapped="GoToStateA" />
</Grid>
使用以下简单代码:
private void GoToStateA(object sender, DoubleTappedRoutedEventArgs e)
{
// do something
VisualStateManager.GoToState(this, "StateA", true);
}
private void GoToStateB(object sender, DoubleTappedRoutedEventArgs e)
{
// do something else
VisualStateManager.GoToState(this, "StateB", true);
}
修改:&#34;解决方案&#34;正如JustinXL所指出的那样,需要删除以下Xaml元素并且运行时错误消失:
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:1"/>
</VisualStateGroup.Transitions>
我并不完全清楚为什么会这样(真正的错误或只是一个模糊的设计)。
答案 0 :(得分:2)
实际上,更简单的解决方案是完全删除Transitions
中的VisualStateGroup
。
另请注意,我添加了IsHitTestVisible
更改,以便FirstElement
能够获得点击次数。
<VisualStateManager.VisualStateGroups>
<VisualStateGroup>
<VisualState x:Name="StateA">
<VisualState.Setters>
<Setter Target="SecondElement.(UIElement.IsHitTestVisible)"
Value="False" />
</VisualState.Setters>
<Storyboard>
<PopOutThemeAnimation TargetName="SecondElement" />
<PopInThemeAnimation TargetName="FirstElement" />
</Storyboard>
</VisualState>
<VisualState x:Name="StateB">
<Storyboard>
<PopOutThemeAnimation TargetName="FirstElement" />
<PopInThemeAnimation TargetName="SecondElement" />
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
答案 1 :(得分:0)
事实证明,故事板必须在VisualTransition中,而不是在VisualState本身,尽管事实上你可以在视觉状态下拥有动画故事板。
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="VisualStateGroup">
<VisualStateGroup.Transitions>
<VisualTransition To="StateA">
<VisualTransition.Storyboard>
<Storyboard>
<PopOutThemeAnimation TargetName="SecondElement"/>
<PopInThemeAnimation TargetName="FirstElement"/>
</Storyboard>
</VisualTransition.Storyboard>
</VisualTransition>
<VisualTransition To="StateB">
<VisualTransition.Storyboard>
<Storyboard>
<PopOutThemeAnimation TargetName="FirstElement"/>
<PopInThemeAnimation TargetName="SecondElement"/>
</Storyboard>
</VisualTransition.Storyboard>
</VisualTransition>
</VisualStateGroup.Transitions>
<VisualState x:Name="StateA">
<VisualState.Setters>
<Setter Target="FirstElement.Visibility" Value="Visible" />
<Setter Target="SecondElement.Visibility" Value="Collapsed" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="StateB">
<VisualState.Setters>
<Setter Target="FirstElement.Visibility" Value="Collapsed" />
<Setter Target="SecondElement.Visibility" Value="Visible" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>